<rss version="2.0">
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    <title>Pumps  from MacDonald Plumbing &amp; Heating Supplies</title>
    <link>http://www.macdonaldplumbingsupplies.com/rss/1/productlistings_rss/c2136::jg:speed:fit</link>
    <description></description>
    <copyright>Copyright 2026 MacDonald Plumbing &amp; Heating Supplies</copyright>
    <language>en</language>
    <lastBuildDate>Sat, 07 Nov 2026 02:05:05 +0000</lastBuildDate>
    <pubDate>Sat, 07 Nov 2026 02:05:05 +0000</pubDate>
              <item>
              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731-68083_thumb.jpg" alt="BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731">BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)</a></p>
<p>The BritTherm S4 25/4-180 Circulator Pump offers intelligent circulation for potable water systems, designed with a longer 180mm body and 1&quot; BSP connections. With 9 smart operating modes including AUTO, constant pressure, and proportional pressure settings, this pump ensures efficient, reliable performance tailored to system demand. It&amp;rsquo;s housed in durable stainless steel and features electrical and thermal protection for long-term safety.
The BritTherm Circulator Pump S4 25/4-180 is built for installers and engineers looking for efficiency, flexibility, and dependability in potable water circulation. Its extended 180mm length makes it ideal for replacing pumps in systems with longer fixing centres. With nine intelligent operating modes, including energy-saving AUTO and Night Mode, the pump dynamically adjusts to varying flow demands without manual recalibration.
It features three &amp;ldquo;Old School&amp;rdquo; fixed-speed settings, two constant pressure (CP1, CP2), and two proportional pressure (PP1, PP2) modes for advanced control. Constructed with an EN1.4521 stainless steel casing, it&amp;rsquo;s safe for potable water use and protected against overheating and electrical faults. Whether you&#039;re fitting new or retrofitting existing pipework, this pump is a top-tier solution.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 180mm pump length with 1&quot; BSP connections ✅ Hygienic EN1.4521 stainless steel construction ✅ 9 smart operation modes including AUTO and Night Mode ✅ Classic 3-speed manual control option ✅ Constant pressure settings: CP1 &amp;amp; CP2 ✅ Proportional pressure settings: PP1 &amp;amp; PP2 ✅ Night Mode lowers energy use to 5W ✅ Built-in electrical and thermal protection ✅ Ideal for potable water circulation systems ✅ Excellent for both domestic and light commercial use</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B3 Series B3 25/4-130 (661996902)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-25-4-130-661996902-p23682"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b3-series-b3-25-4-130-661996902-p23682-67966_thumb.jpg" alt="BritTherm Сirculator Pump B3 Series B3 25/4-130 (661996902)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-25-4-130-661996902-p23682">BritTherm Сirculator Pump B3 Series B3 25/4-130 (661996902)</a></p>
<p>The BritTherm B3 25/4-130 Circulator Pump is a high-efficiency, smart pump designed for potable water circulation and recirculation systems. It features 9 built-in intelligent operating modes, including AUTO, constant and proportional pressure settings, three fixed speeds, and an energy-saving night mode. This model is ideal for a range of domestic and light commercial applications. A simple one-button interface makes operation straightforward, while built-in electrical and thermal protection ensures safety and reliability in all conditions.
Designed for modern water circulation systems, the BritTherm Circulator Pump B3 Series B3 25/4-130 offers intuitive functionality with nine intelligent modes to meet diverse system requirements. AUTO mode dynamically selects the most efficient setting based on current demand, while CP1 and CP2 maintain constant pressure across varying flow rates. PP1 and PP2 automatically adjust pressure in proportion to changes in flow, providing tailored performance.
Three traditional fixed-speed settings are available for manual control, and night mode reduces power usage to just 5 watts during low-demand periods. With electrical and thermal protection included, the pump defends against overheating and voltage issues. Its 130mm length makes it compact and installation-friendly, perfect for space-conscious environments.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 9 intelligent modes including AUTO, CP1, CP2, PP1, and PP2 ✅ Night mode reduces energy usage to just 5W ✅ Three fixed speeds for manual operation ✅ Easy-to-use single-button interface ✅ Constant and proportional pressure settings ✅ Smart adaptability to flow rate and system demands ✅ Compact 130mm body for straightforward fitting ✅ Electrical and thermal protection built in ✅ Ideal for domestic or light commercial use ✅ Optimised for potable water circulation and recirculation</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-25-4-130-661996902-p23682</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-25-4-130-661996902-p23682</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 25/4-130 (661995702)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-4-130-661995702-p23608"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-25-4-130-661995702-p23608-67837_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 25/4-130 (661995702)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-4-130-661995702-p23608">BritTherm Automatic Сirculator Pump P5 Series P5 25/4-130 (661995702)</a></p>
<p>The BritTherm P5 25/4-130 Circulator Pump is the ideal choice for smaller heating systems or applications requiring lower head pressure. With a compact 130mm body and 25mm connections, it&amp;rsquo;s perfect for tight installations such as HIUs, combi boilers, or zoned circuits. Despite its modest 4-metre head, it offers all the intelligent features of the P5 Series: 10 operating modes, including AUTO, constant and proportional pressure settings, as well as three fixed speeds. Dual PWM control and built-in night mode ensure full smart system compatibility and energy efficiency.
Compact yet powerful, the BritTherm P5 25/4-130 is engineered for domestic heating systems that demand space efficiency without sacrificing smart control. With a 4-metre head height and 25mm connection, it&amp;rsquo;s ideal for applications such as HIUs, hot water recirculation, and small heating loops.
The pump is equipped with dual PWM inputs (GT and ST), allowing remote control integration with thermostats and controllers including Siemens, Honeywell, and others. It delivers 10 different operation modes to suit a wide variety of heating scenarios—from constant or proportional pressure for underfloor heating to fixed-speed options for traditional setups.
Its AUTO mode simplifies installation, automatically selecting the best settings for 80% of systems. The Automatic Night Power Reduction Function reduces electricity use to just 5 watts when heating is not required, contributing to lower energy bills.
Electrical and thermal protection ensures safety and reliability, making the P5 25/4-130 a dependable solution for modern heating systems.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 4-metre head height—perfect for compact heating setups ✅ 25mm connection size with 130mm body length ✅ PWM GT &amp;amp; ST inputs for thermostat/controller integration ✅ AUTO mode fits 80% of domestic heating systems ✅ Constant pressure (CP1, CP2) for stable flow systems ✅ Proportional pressure (PP1, PP2) for dynamic flow changes ✅ Three traditional fixed-speed settings for manual control ✅ 5W night mode for energy saving without comfort loss ✅ Full electrical and thermal safety features included ✅ Compatible with heat pumps, boilers, and HIUs</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-4-130-661995702-p23608</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-4-130-661995702-p23608</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 25/5-130 (661995706)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-5-130-661995706-p23610"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-25-5-130-661995706-p23610-67841_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 25/5-130 (661995706)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-5-130-661995706-p23610">BritTherm Automatic Сirculator Pump P5 Series P5 25/5-130 (661995706)</a></p>
<p>The BritTherm P5 25/5-130 Circulator Pump is a high-efficiency, intelligent solution for domestic heating systems, including boilers, HIUs, and hot water loops. Featuring a 5-metre head and standard 130mm body, it fits most modern installations with ease. With 10 operation modes, dual PWM control, and an energy-saving night function, this pump is ideal for systems requiring adaptive pressure and speed control. It&amp;rsquo;s compatible with popular thermostat brands and offers a smart, safe, and reliable heating upgrade.
The BritTherm P5 25/5-130 Circulator Pump delivers robust performance and intelligent operation, suited for a wide variety of heating system configurations. With a 5-metre head height and 25mm connections, it&amp;rsquo;s well-matched for zoned central heating, hot water recirculation, and underfloor heating circuits.
The unit includes 10 built-in control modes that cater to varied system needs: AUTO mode for general use, constant pressure settings (CP1 and CP2) for steady-flow systems, and proportional pressure modes (PP1 and PP2) for systems where flow demand varies. It also offers three fixed speeds for legacy system compatibility.
Dual PWM terminals (GT and ST) allow integration with smart thermostats from trusted brands like Siemens and Honeywell. The night mode reduces power usage to only 5 watts, cutting energy bills without compromising comfort.
Protection features include advanced electrical and thermal safeguards that enhance pump durability and shield it from system-related faults, delivering confidence and longevity for the installer and homeowner alike.
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Features &amp;amp; Benefits: ✅ Compact 130mm body for easy installation ✅ 5-metre head ideal for small to medium heating circuits ✅ 25mm ports for standard domestic systems ✅ Dual PWM control inputs for remote integration ✅ AUTO mode handles 80% of household setups ✅ Constant &amp;amp; proportional pressure settings for precision control ✅ Legacy three-speed mode for older systems ✅ Night-time power reduction down to 5W ✅ Thermal and electrical protection built in ✅ Compatible with Siemens, Honeywell, and other major controllers</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-5-130-661995706-p23610</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-5-130-661995706-p23610</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 25/7-130 (661995714)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-7-130-661995714-p23614"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-25-7-130-661995714-p23614-67849_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 25/7-130 (661995714)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-7-130-661995714-p23614">BritTherm Automatic Сirculator Pump P5 Series P5 25/7-130 (661995714)</a></p>
<p>The BritTherm P5 25/7-130 Circulator Pump is engineered for efficient HVAC use in boilers, heat pumps, and HIUs. Designed to deliver a 7-metre head with a compact 130mm body length, this pump incorporates advanced PWM control functions for seamless integration with major thermostats like Siemens and Honeywell. It provides 10 versatile automatic operation modes, ensuring optimal performance and energy savings for various domestic heating systems.
The BritTherm P5 25/7-130 Circulator Pump offers a dependable solution for heating systems requiring a moderate 7-metre head. Its 130mm length allows for easy installation in tight spaces while maintaining robust performance. Ideal for a wide range of domestic heating setups, the pump is suitable for use with boilers, heat pumps, and heat interface units (HIUs).
Featuring two unique PWM functions (GT and ST), this pump supports remote control via two low-voltage cables, compatible with a variety of controllers and thermostats such as Siemens and Honeywell. It provides 10 automatic modes, including an easy-to-use AUTO mode that suits 80% of heating systems, constant pressure modes tailored for underfloor heating, and proportional pressure modes for systems with varying flow demands.
The pump also includes three traditional fixed speeds for simpler systems and an automatic night-time power reduction mode, which lowers energy consumption to just 5 watts without compromising heating performance.
With built-in electrical and thermal protection, the BritTherm P5 25/7-130 is designed to withstand external electrical faults, ensuring long-term reliability and safety.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 7-metre head suitable for medium-pressure heating systems ✅ Compact 130mm length fits most installations ✅ 25mm connection ports compatible with standard pipework ✅ AUTO mode for quick, user-friendly operation ✅ Two constant pressure modes for stable flow rates ✅ Two proportional pressure modes for variable flow systems ✅ Three fixed-speed options for traditional setups ✅ Night power reduction lowers energy use to 5W ✅ Dual PWM inputs (GT and ST) for smart controller integration ✅ Electrical and thermal safety protections extend pump life ✅ Compatible with Siemens, Honeywell, and other controllers</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-7-130-661995714-p23614</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-7-130-661995714-p23614</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616-67853_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616">BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)</a></p>
<p>The BritTherm P5 25/8-130 Circulator Pump is expertly engineered for HVAC systems, including boilers, heat pumps, and heat interface units (HIUs). Offering an 8-metre head and a compact 130mm body length, this pump includes two PWM control functions (GT and ST) for seamless integration with popular controllers such as Siemens and Honeywell. With 10 automatic operating modes, it delivers versatile, energy-efficient performance for a broad range of domestic heating applications.
The BritTherm P5 25/8-130 Circulator Pump provides reliable and flexible heating system circulation with an 8-metre head, ideal for moderately high-pressure needs in boilers, heat pumps, and HIUs. Its 130mm length design fits neatly into many installation environments while maintaining robust performance.
This pump incorporates two unique PWM functions (GT and ST), enabling remote operation via two low-voltage cables compatible with a wide variety of controllers and thermostats, including Siemens and Honeywell models.
With 10 automatic modes, including the simple AUTO mode for quick commissioning across 80% of heating systems, the pump adapts easily to different system demands. It features two constant pressure modes tailored for underfloor heating or stable flow systems and two proportional pressure modes for systems with variable flow rates. Additionally, three fixed speed modes offer manual control options for more traditional setups.
An energy-saving night mode reduces power consumption to just 5 watts without sacrificing heating performance. Electrical and thermal protection features guard the pump against damage caused by external faults, ensuring long-lasting, reliable operation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 8-metre head for higher-pressure heating system demands ✅ Compact 130mm length for versatile installation ✅ Standard 25mm pipe connections ✅ Easy AUTO mode for rapid system commissioning ✅ Two constant pressure modes for steady-flow systems ✅ Two proportional pressure modes for variable flow rate systems ✅ Three fixed-speed settings for manual control ✅ Night power reduction to 5 watts for energy efficiency ✅ Dual PWM control (GT and ST) compatible with Siemens, Honeywell, and more ✅ Electrical and thermal protection for enhanced durability</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 32/6-180 (661995712)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-6-180-661995712-p23620"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-32-6-180-661995712-p23620-67861_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 32/6-180 (661995712)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-6-180-661995712-p23620">BritTherm Automatic Сirculator Pump P5 Series P5 32/6-180 (661995712)</a></p>
<p>The BritTherm P5 32/6-180 Circulator Pump is engineered for HVAC systems including boilers, heat pumps, and HIUs. Featuring a 6-metre head and 32mm connections, it offers reliable pressure and flow for domestic heating applications. Its two PWM control functions allow remote operation via low-voltage cables, compatible with popular thermostats such as Siemens and Honeywell. With 10 automatic modes and energy-saving features, it adapts seamlessly to various heating system demands.
The BritTherm P5 32/6-180 Circulator Pump is a high-performance pump designed to meet the needs of modern HVAC systems, including boiler circuits, heat pumps, and heat interface units (HIUs). Its robust 32mm pipe connections and 6-metre head make it suitable for systems requiring higher pressure and flow.
This pump features two unique PWM functions (GT and ST), allowing remote control through two low-voltage cables, making it compatible with a wide range of controllers and thermostats, including Siemens and Honeywell.
Users benefit from 10 automatic operation modes:


AUTO mode enables quick, one-button activation for around 80% of heating systems.


Two Constant Pressure Modes (CP1 and CP2) optimise performance in underfloor heating and systems with stable flow rates.


Two Proportional Pressure Modes (PP1 and PP2) adapt to systems with dynamic flow changes.


Three fixed speed options provide manual control over the entire power range.


The pump also includes an automatic night power reduction function, lowering energy use to just 5 watts without compromising heating performance. Electrical and thermal protection systems safeguard the pump from failures due to external conditions, enhancing durability and reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 32mm connections for dependable flow rates ✅ 6-metre head for higher pressure systems ✅ 180mm installation length for versatile fit ✅ One-button AUTO mode for simple setup ✅ Constant pressure modes suited for underfloor heating ✅ Proportional pressure modes for fluctuating flow systems ✅ Three fixed speed settings for manual control ✅ Energy-saving night mode reduces power consumption to 5W ✅ Dual PWM control compatible with Siemens, Honeywell, and more ✅ Electrical and thermal protections prevent damage from external factors</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-6-180-661995712-p23620</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-6-180-661995712-p23620</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 32/7-180 (661995716)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-7-180-661995716-p23621"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-32-7-180-661995716-p23621-67863_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 32/7-180 (661995716)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-7-180-661995716-p23621">BritTherm Automatic Сirculator Pump P5 Series P5 32/7-180 (661995716)</a></p>
<p>The BritTherm P5 32/7-180 Circulator Pump is a versatile pump designed for HVAC applications such as boilers, heat pumps, and heat interface units (HIUs). It features a 7-metre head and 32mm connections, providing reliable performance for domestic heating systems. With two unique PWM control modes compatible with major thermostats like Siemens and Honeywell, this pump offers 10 automatic operation modes for adaptable and efficient heating control, including an energy-saving night mode.
The BritTherm P5 32/7-180 Circulator Pump is built to deliver efficient and adaptable performance in a wide range of heating systems, including boilers, heat pumps, and HIUs. Designed with 32mm pipe connections and a 7-metre head, it is well-suited to systems requiring higher pressure and consistent flow rates.
This pump incorporates two unique PWM functions (GT and ST) for remote control via two low-voltage control cables. This feature ensures compatibility with a broad selection of controllers and thermostats, including popular brands like Siemens and Honeywell.
It offers 10 automatic operation modes tailored to meet various system demands:


AUTO mode provides a simple one-button start suitable for approximately 80% of heating systems.


Two Constant Pressure Modes (CP1 and CP2) are ideal for underfloor heating and systems with stable flow requirements.


Two Proportional Pressure Modes (PP1 and PP2) adapt to systems with more variable flow demands.


Three fixed speed settings allow manual control over the full power range.


An automatic night power reduction function decreases energy use to just 5 watts during low demand periods, without compromising heating quality. Electrical and thermal protections safeguard the pump against damage caused by external influences, ensuring long-lasting reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 32mm connections for steady flow rates ✅ 7-metre head suitable for higher pressure requirements ✅ 180mm installation length for versatile fitting ✅ One-button AUTO mode for quick and easy setup ✅ Constant pressure modes perfect for underfloor heating ✅ Proportional pressure modes for systems with changing flow rates ✅ Three fixed speeds for manual operation ✅ Energy-saving night mode reduces consumption to 5W ✅ PWM remote control compatible with Siemens, Honeywell, and more ✅ Electrical and thermal protections to prevent pump damage</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-7-180-661995716-p23621</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-32-7-180-661995716-p23621</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P6 Series P6 32/12-180 (661995804)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-12-180-661995804-p23628"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p6-series-p6-32-12-180-661995804-p23628-67877_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P6 Series P6 32/12-180 (661995804)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-12-180-661995804-p23628">BritTherm Automatic Сirculator Pump P6 Series P6 32/12-180 (661995804)</a></p>
<p>The BritTherm P6 32/12-180 is a high-performance circulation pump engineered for demanding HVAC installations. With a powerful 12-metre head and large 32mm connections, it handles high-volume systems with ease. This advanced model includes 10 automatic modes and twin PWM functions, ensuring compatibility with smart thermostats and delivering maximum energy efficiency. Ideal for underfloor heating and complex systems, it balances performance with reliable protection.
Designed for installers seeking maximum flow and versatility, the BritTherm P6 32/12-180 offers a standout 12m head height and 32mm bore, making it ideal for large underfloor heating arrays and multi-zone radiator systems. Its 10 automatic modes cover every installation scenario, from constant and proportional pressure to manual speed settings.
With integrated GT and ST PWM control, this pump seamlessly connects to smart thermostats and controllers from brands like Siemens and Honeywell. Energy-saving AUTO and night modes ensure lower running costs without compromising performance. It also includes robust thermal and electrical protection, providing long-lasting safety in any domestic heating setup.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 12m head height for large, multi-zone systems ✅ 32mm ports allow high flow capacity ✅ AUTO Mode fits 80% of heating setups ✅ Constant &amp;amp; proportional pressure modes for fine control ✅ Three-speed manual settings for traditional setups ✅ Dual PWM control (GT &amp;amp; ST) for remote integration ✅ Compatible with Siemens, Honeywell, and more ✅ Energy-efficient with night mode functionality ✅ Built-in electrical and thermal protection ✅ Ideal for demanding underfloor and radiator systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-12-180-661995804-p23628</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-12-180-661995804-p23628</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P6 Series P6 32/15-180 (661995806)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-15-180-661995806-p23629"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p6-series-p6-32-15-180-661995806-p23629-67879_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P6 Series P6 32/15-180 (661995806)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-15-180-661995806-p23629">BritTherm Automatic Сirculator Pump P6 Series P6 32/15-180 (661995806)</a></p>
<p>The BritTherm P6 32/15-180 is the most powerful model in the P6 Series, delivering a massive 15-metre head for the most demanding central heating and underfloor systems. With 32mm connections, 10 operational modes and dual PWM compatibility, this pump offers smart control and exceptional performance. Ideal for commercial-scale or complex domestic installations, it provides robust flow, enhanced safety, and effortless automation.
For installations requiring unmatched power and reliability, the BritTherm P6 32/15-180 is a high-output solution tailored to modern heating systems. With its 15m head height, this 180mm pump easily supports extended pipe runs and multi-zone underfloor heating or radiator circuits. It comes equipped with 10 selectable modes, including constant and proportional pressure settings, and three fixed-speed options for legacy systems.
Its dual PWM control modes (GT and ST) allow remote operation with leading thermostats and controllers, including Siemens, Honeywell and others. Electrical and thermal protections are built-in to prevent damage from system faults or overheating. Whether you&amp;rsquo;re fitting a high-volume domestic system or light commercial heating, this pump ensures consistent, efficient circulation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Massive 15m head for large or multi-zone systems ✅ 32mm ports for high-volume water flow ✅ AUTO Mode suits 80% of heating applications ✅ Constant and proportional pressure modes for system tuning ✅ Three fixed-speed options for traditional control ✅ Dual PWM (GT &amp;amp; ST) compatible with major brands ✅ Ideal for smart thermostats and controllers ✅ Integrated electrical and thermal safety features ✅ Quiet, efficient motor reduces running costs ✅ Designed for large HVAC and underfloor systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-15-180-661995806-p23629</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p6-series-p6-32-15-180-661995806-p23629</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P7 Series P7 25/10-180 (661995903)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-25-10-180-661995903-p23631"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p7-series-p7-25-10-180-661995903-p23631-67883_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P7 Series P7 25/10-180 (661995903)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-25-10-180-661995903-p23631">BritTherm Automatic Сirculator Pump P7 Series P7 25/10-180 (661995903)</a></p>
<p>The BritTherm P7 25/10-180 circulator pump is a robust, high-efficiency solution for commercial heating systems, including large residential installations and complex underfloor circuits. Engineered with permanent magnet motor technology and a compact rotor, this pump offers quiet operation, excellent energy efficiency, and advanced control. With 13 automatic operation modes and self-ventilated design, it delivers dependable performance for demanding environments.
The BritTherm P7 25/10-180 represents a significant leap forward in circulator pump performance for commercial and high-demand residential systems. Its 180mm length and 25mm connections ensure it fits standard installations while delivering reliable output with a maximum head of 10 metres.
This P7 model features an expanded set of 13 control modes, including four constant pressure settings (CP2–CP5), four proportional pressure options (PP2–PP5), and four constant rotor speed selections, plus the one-touch AUTO mode for universal compatibility. The P7 series also benefits from automatic night power reduction to just 5W, reducing energy use without sacrificing heating efficiency.
Thanks to a self-ventilated body and integrated thermal and electrical protection, this pump ensures longevity, minimal maintenance, and uninterrupted performance even in challenging systems.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Permanent magnet motor for high efficiency ✅ Quiet operation with compact rotor design ✅ 13 advanced control modes for versatile applications ✅ AUTO mode for plug-and-play setup ✅ 4x Constant Pressure &amp;amp; 4x Proportional Pressure settings ✅ 4x Fixed rotor speeds for traditional control ✅ Energy-saving night mode reduces consumption to 5W ✅ Self-ventilated casing prevents air ingress ✅ Full thermal &amp;amp; electrical protection built-in ✅ Ideal for commercial and large domestic heating</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-25-10-180-661995903-p23631</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-25-10-180-661995903-p23631</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P3 Series P3 25/7-130 (661995514)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-130-661995514-p23585"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-130-661995514-p23585-67773_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P3 Series P3 25/7-130 (661995514)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-130-661995514-p23585">BritTherm Automatic Сirculator Pump P3 Series P3 25/7-130 (661995514)</a></p>
<p>The BritTherm P3 25/7-130 Circulator Pump delivers powerful water circulation for domestic heating systems with a high-performance 7-metre head. Designed with a compact 130mm body, it fits easily into tight spaces while offering nine versatile operation modes, including AUTO, constant pressure, proportional pressure, and fixed-speed settings. Its night mode drops energy use to just 5 watts, combining power with energy efficiency.
Engineered for domestic heating systems requiring higher head performance, the BritTherm P3 25/7-130 Circulator Pump features a 25mm connection size, a 7-metre head, and a compact 130mm body for easy installation—even in restricted spaces. It offers nine user-selectable operation modes designed to optimise performance and energy efficiency.
With AUTO mode, the pump adapts to your heating system&amp;rsquo;s needs in real time. Constant pressure settings (CP1 and CP2) and proportional pressure options (PP1 and PP2) allow you to tailor the pump&#039;s operation, while the classic three-speed settings give users full manual control when needed.
The automatic night mode reduces energy use to just 5 watts without affecting heating performance. Built-in thermal and electrical protection ensures reliable, long-lasting operation even under varying conditions.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 130mm compact body for space-restricted installations ✅ Powerful 7-metre head for enhanced water circulation ✅ 25mm connections for standard pipework ✅ AUTO mode for adaptive performance ✅ CP1 &amp;amp; CP2 constant pressure settings ✅ PP1 &amp;amp; PP2 proportional pressure options ✅ Three manual speed settings ✅ Automatic night mode reduces power to 5 watts ✅ Electrical and thermal safety protection ✅ Ideal for modern and retrofit heating systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-130-661995514-p23585</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-130-661995514-p23585</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595-67797_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595">BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)</a></p>
<p>The BritTherm P4 25/4-180 Circulator Pump offers high performance and installation flexibility for modern HVAC systems. With a 180mm body length and 4-metre head, this 25mm pump is suitable for larger installations, heat interface units, and underfloor heating. Featuring 11 automatic work programmes and PWM remote control compatibility, it adapts to a wide range of heating demands while improving efficiency and control.
Designed for demanding domestic and commercial systems, the BritTherm P4 25/4-180 Circulator Pump combines intelligent functionality with exceptional flexibility. Its longer 180mm body makes it ideal for retrofits and systems requiring extended fitting space, while the 25mm connections and 4-metre head ensure reliable circulation across standard heating loops.
Equipped with 11 work modes—including AUTO mode, three constant pressure settings (CP1–CP3), and three proportional pressure settings (PP1–PP3)—the pump can automatically adapt to changing flow demands, making it perfect for underfloor heating and zoned systems. Traditional fixed-speed modes are also available for simpler setups.
The integrated PWM control interface allows for remote pump frequency management using compatible thermostats such as Siemens and Honeywell, supporting energy-saving smart home installations. Built-in electrical and thermal protection safeguards against system faults and ensures long-term reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 25mm connections with a 4-metre head – ideal for compact and mid-size heating systems ✅ 180mm extended body – suitable for installations needing more reach ✅ 11 intelligent modes including AUTO, constant, and proportional pressure control ✅ PWM interface supports remote control from smart thermostats ✅ Compatible with major brands like Siemens and Honeywell ✅ Excellent for boilers, HIUs, heat pumps, and underfloor heating ✅ AUTO mode adjusts output to system needs automatically ✅ Electrical and thermal protection guards against damage ✅ Night power reduction for energy-efficient operation ✅ Simple user interface for fast setup and configuration</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P2 Series P2 25/6-180 (661995411)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-6-180-661995411-p23564"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p2-series-p2-25-6-180-661995411-p23564-67720_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P2 Series P2 25/6-180 (661995411)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-6-180-661995411-p23564">BritTherm Automatic Сirculator Pump P2 Series P2 25/6-180 (661995411)</a></p>
<p>The BritTherm P2 25/6-180 Circulator Pump delivers advanced performance for domestic and light commercial heating systems. With a 6-metre head, 180mm body length, and nine smart modes including AUTO, constant and proportional pressure, fixed speeds, and night mode, it ensures maximum efficiency and comfort. Ideal for larger installations with 180mm pump spacing.
Engineered for optimal flow control and energy efficiency, the BritTherm P2 25/6-180 Circulator Pump is a powerful and adaptable heating solution. It features nine intelligent operation modes, including a one-touch AUTO Mode that dynamically adapts to the system&#039;s needs—perfect for around 80% of UK heating setups.
Its two Constant Pressure settings (CP1 &amp;amp; CP2) keep pressure stable regardless of changes in flow, while Proportional Pressure modes (PP1 &amp;amp; PP2) optimise energy use by scaling output in line with system demand. For traditional installers, the pump also offers three selectable Fixed Speeds. During reduced usage periods, Night Mode limits power draw to just 5 watts without sacrificing system reliability.
A longer 180mm body suits installations where standard 130mm models won&amp;rsquo;t fit. Built-in electrical and thermal protections safeguard against faults and external disruptions.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 9 operation modes, including smart AUTO Mode ✅ CP1 &amp;amp; CP2 ensure constant pressure performance ✅ PP1 &amp;amp; PP2 adapt to pressure variations for efficiency ✅ Traditional 3-speed manual options ✅ Night Mode saves energy down to 5 watts ✅ Suitable for 25mm pipework with 6m head ✅ Extended 180mm body for wider installation compatibility ✅ Electrical &amp;amp; thermal protection for safe, long-term use</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-6-180-661995411-p23564</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-6-180-661995411-p23564</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567-67738_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567">BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)</a></p>
<p>The BritTherm P2 25/8-180 Circulator Pump is designed to deliver powerful and efficient heating system circulation. Featuring a 25mm connection size and an 8-metre head, it is ideal for medium to larger heating systems requiring reliable flow and pressure. Equipped with nine automatic operating modes including AUTO, constant and proportional pressure settings, plus three manual speeds, it adapts perfectly to system demands. Its energy-saving Night Mode reduces consumption to just 5 watts, and built-in electrical and thermal protection safeguards pump longevity.
The BritTherm P2 25/8-180 Circulator Pump combines performance and smart technology to enhance heating system efficiency and comfort. With a 25mm inlet/outlet and 180mm pump body, it fits standard heating setups while providing an impressive 8-metre head for effective water circulation across various system sizes.
Its nine built-in modes allow it to intelligently respond to heating system changes. AUTO Mode simplifies use for most systems, while CP1 and CP2 constant pressure modes ensure steady pressure irrespective of flow rate. The PP1 and PP2 proportional pressure modes dynamically adjust pump performance based on system pressure fluctuations. For users preferring manual control, three fixed speed settings provide flexibility. The Night Mode significantly lowers power consumption during off-peak periods without compromising system performance.
Electrical and thermal protection features prevent damage from external electrical faults or overheating, ensuring durability and peace of mind. The pump is ideal for modern installations and upgrades requiring smart, energy-efficient circulation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 25mm connection size, suitable for medium to large systems ✅ 8m head for excellent flow and pressure control ✅ AUTO Mode for easy, adaptive operation ✅ Constant pressure modes (CP1, CP2) for stable system performance ✅ Proportional pressure modes (PP1, PP2) for dynamic adjustment ✅ Three manual fixed speeds for flexible control ✅ Energy-saving Night Mode reduces consumption to 5W ✅ Electrical and thermal protection for added reliability ✅ Suitable for residential and commercial heating systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537-67597_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537">BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)</a></p>
<p>The BritTherm P1 25/5-180 Circulator Pump is designed for optimal performance in larger heating systems requiring a 180mm pump body. Equipped with smart AUTO mode, three manual speed settings, and an energy-saving night function, it intelligently adapts to system demands while keeping energy usage low. With electrical and thermal protection, it ensures reliable, long-lasting operation in both domestic and light commercial environments.
The BritTherm Automatic Circulator Pump P1 25/5-180 offers smart, energy-efficient heating control in a robust 180mm format. Ideal for homes and small commercial systems, this model automatically adjusts its performance using intelligent AUTO mode to match real-time system requirements—delivering comfort while reducing energy consumption.
Installers can manually select between three fixed-speed settings for tailored control when preferred, and the integrated night-time reduction mode drops power usage to as low as 5 watts when demand is low.
With built-in electrical and thermal protection, the pump resists damage from power surges or overheating, ensuring consistent and dependable circulation. The 180mm body provides flexibility for systems that require a longer fitting size, making the P1 25/5-180 a reliable upgrade or replacement choice.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 180mm body ideal for larger heating systems ✅ Smart AUTO mode adapts to system demand ✅ Manual fixed-speed operation with 3 selectable settings ✅ Energy-saving night function reduces power to 5W ✅ Integrated thermal and electrical safety protection ✅ 1&quot; BSP connections for standard system compatibility ✅ Quiet operation with low vibration ✅ Easy one-button interface for quick adjustments</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/8-180 (661995314)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-180-661995314-p23542"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-180-661995314-p23542-67670_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/8-180 (661995314)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-180-661995314-p23542">BritTherm Automatic Сirculator Pump P1 Series P1 25/8-180 (661995314)</a></p>
<p>The BritTherm P1 25/8-180 Automatic Circulator Pump combines advanced functionality with dependable performance. Featuring four built-in operation modes, including an intelligent AUTO Mode, this pump adjusts its speed to suit your heating system&amp;rsquo;s needs. With night power reduction cutting energy use to just 5 watts and robust safety systems built in, it&amp;rsquo;s ideal for modern, efficient home heating.
The BritTherm Automatic Circulator Pump P1 Series P1 25/8-180 is engineered for versatility and performance in domestic heating systems. This model offers four operational modes, including three fixed speeds for traditional users and a smart AUTO Mode that dynamically adapts to your system&amp;rsquo;s demand, ensuring optimal comfort and energy efficiency.
With a built-in Automatic Night Power Reduction Function, the pump consumes as little as 5 watts during low-usage periods without compromising heating performance. Safety is prioritised through electrical and thermal protection systems that guard against damage from external issues.
At 180mm in length, this pump fits seamlessly into most standard heating systems, offering a reliable, easy-to-use solution for energy-conscious homeowners and installers alike.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Intelligent AUTO Mode adjusts to system demand ✅ Three fixed speed settings for manual control ✅ 5W night power mode for reduced energy use ✅ One-button control for easy operation ✅ Built-in thermal and electrical protection ✅ 180mm length fits common heating system setups ✅ Quiet, efficient, and maintenance-friendly</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-180-661995314-p23542</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-180-661995314-p23542</link>
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              <pubDate>Sat, 07 Nov 2026 02:05:05 +0000</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/10-130 (661995319)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-10-130-661995319-p23530"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-10-130-661995319-p23530-67575_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/10-130 (661995319)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-10-130-661995319-p23530">BritTherm Automatic Сirculator Pump P1 Series P1 25/10-130 (661995319)</a></p>
<p>The BritTherm P1 25/10-130 Circulator Pump delivers high performance with a 10-metre head, perfect for larger or more complex heating systems. Its compact 130mm body fits neatly into tight spaces while offering four built-in operation modes, including an intelligent AUTO mode that optimises pump speed for energy efficiency and comfort. With a low-power night mode and robust electrical and thermal protection, this pump is both reliable and economical for residential or commercial heating applications.
Engineered for demanding heating systems, the BritTherm Automatic Circulator Pump P1 25/10-130 combines power with smart energy management. The 10-metre head capability makes it suitable for systems with higher resistance, ensuring consistent and effective circulation of heating fluids.
This model features three fixed speeds for manual control and an AUTO mode that intelligently adapts to the heating system&amp;rsquo;s requirements, balancing performance with minimal energy use. The automatic night power reduction function cuts power consumption down to 5 watts during off-peak periods, helping reduce running costs without sacrificing comfort.
Built to last, the pump includes essential electrical and thermal protection systems to guard against damage caused by external factors, enhancing reliability and longevity. Its compact dimensions make installation straightforward, even in restricted spaces.
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Features &amp;amp; Benefits: ✅ High 10-metre head for demanding heating systems ✅ Compact 130mm body length with standard 1&quot; BSP connections ✅ Intelligent AUTO mode adjusts pump operation automatically ✅ Three fixed speed settings for manual selection ✅ Night mode reduces power use to 5 watts ✅ Electrical and thermal protection for enhanced durability ✅ Quiet operation suitable for domestic and commercial use ✅ Simple single-button control</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-10-130-661995319-p23530</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-10-130-661995319-p23530</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>Instantor 771928 Universal Pump Head Replacement Kit - 8 Metre with Wilo PWM Adaptor Cable</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771928-universal-pump-head-replacement-kit-8-metre-with-wilo-pwm-adaptor-cable-p23221"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/instantor-771928-universal-pump-head-replacement-kit-8-metre-with-wilo-pwm-adaptor-cable-p23221-67045_thumb.jpg" alt="Instantor 771928 Universal Pump Head Replacement Kit - 8 Metre with Wilo PWM Adaptor Cable"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771928-universal-pump-head-replacement-kit-8-metre-with-wilo-pwm-adaptor-cable-p23221">Instantor 771928 Universal Pump Head Replacement Kit - 8 Metre with Wilo PWM Adaptor Cable</a></p>
<p>The Instantor Universal Pump Head Replacement Kit (771928) is an 8-metre, high-performance, energy-efficient replacement solution compatible with various boiler systems. This modulating pump, complete with a Wilo PWM adaptor cable, offers flexible control settings to maximise boiler efficiency. Its features include a 31.6L/min flow rate, multiple pressure modes, and eco-friendly operation. This pump kit also includes all necessary accessories for simple installation and is compliant with ErP energy standards.</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771928-universal-pump-head-replacement-kit-8-metre-with-wilo-pwm-adaptor-cable-p23221</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771928-universal-pump-head-replacement-kit-8-metre-with-wilo-pwm-adaptor-cable-p23221</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>Instantor 771929 Universal Pump Head Replacement Kit - 8 Metre CCW with Grundfos Adaptor Cable</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771929-universal-pump-head-replacement-kit-8-metre-ccw-with-grundfos-adaptor-cable-p23222"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/instantor-771929-universal-pump-head-replacement-kit-8-metre-ccw-with-grundfos-adaptor-cable-p23222-67046_thumb.jpg" alt="Instantor 771929 Universal Pump Head Replacement Kit - 8 Metre CCW with Grundfos Adaptor Cable"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771929-universal-pump-head-replacement-kit-8-metre-ccw-with-grundfos-adaptor-cable-p23222">Instantor 771929 Universal Pump Head Replacement Kit - 8 Metre CCW with Grundfos Adaptor Cable</a></p>
<p>The Instantor Universal Pump Head Replacement Kit – 8 Metre CCW (771948) with Wilo and Grundfos adaptor cables provides a high-performance solution for various heating systems. This modulating pump offers control flexibility with multiple settings and pulse width modulation (PWM) compatibility. Designed for easy retrofit in most applications, it enhances boiler efficiency, delivering a quiet, energy-efficient operation with an Energy Efficiency Index (EEI) of ≤ 0.23. The kit includes all necessary installation components and is fully ErP compliant.</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771929-universal-pump-head-replacement-kit-8-metre-ccw-with-grundfos-adaptor-cable-p23222</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/instantor-771929-universal-pump-head-replacement-kit-8-metre-ccw-with-grundfos-adaptor-cable-p23222</link>
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