BritTherm Сirculator Pump S6 Series S6 25/12-180 (661999603)

The BritTherm S6 25/12-180 Circulator Pump combines powerful performance with smart technology for potable water systems. Featuring an EN1.4521 stainless steel casing and 180mm body, it's built for high-capacity domestic and light commercial use. With 10 automatic operating modes—including AUTO, fixed speed, constant and proportional pressure—the pump adapts to any installation. Advanced PWM GT and PWM ST remote-control functions allow integration with popular control systems like Siemens and Honeywell, while built-in electrical and thermal protection ensures lasting reliability. Designed for precision control and reliability, the BritTherm Circulator Pump S6 Series S6 25/12-180 is ideal for potable water circulation and recirculation. The stainless steel EN1.4521 housing provides corrosion resistance and suitability for drinking water systems, while the extended 180mm body supports higher capacity and greater flow rates. With three selectable fixed speeds, AUTO mode, and both constant and proportional pressure options, this pump offers 10 smart operating modes tailored to any application. PWM GT and PWM ST technology enable remote speed and function control via low-voltage signals—compatible with leading systems like Siemens and Honeywell. Engineered for ease of use and reliability, the pump also includes built-in electrical and thermal protection to safeguard against external faults and overloads.   Features & Benefits: ✅ Stainless steel EN1.4521 casing for potable water use ✅ 180mm body supports higher flow rates ✅ 10 smart modes including AUTO, CP, and PP ✅ Three fixed-speed modes for full power range ✅ AUTO mode adapts to system demand automatically ✅ Two constant pressure settings (CP1 & CP2) ✅ Two proportional pressure settings (PP1 & PP2) ✅ PWM GT & ST functions for remote control compatibility ✅ Works with Siemens, Honeywell & similar systems ✅ Built-in thermal and electrical safety protection

BritTherm Сirculator Pump S6 Series S6 25/15-180 (661999605)

The BritTherm S6 25/15-180 Circulator Pump is a high-efficiency pump specifically engineered for potable water circulation and recirculation. Featuring a robust EN1.4521 stainless steel casing and a 180mm length, this pump offers versatile operation with 10 automatic modes, including AUTO, constant pressure, and proportional pressure settings. Its built-in PWM GT and PWM ST functions enable seamless integration with smart control systems like Siemens and Honeywell. With electrical and thermal protection included as standard, it ensures reliability, safety, and consistent performance in demanding applications. The BritTherm Circulator Pump S6 25/15-180 is designed to meet the needs of modern potable water systems, offering outstanding versatility and control. Its stainless steel EN1.4521 body provides long-lasting corrosion resistance, making it suitable for continuous use in domestic and commercial settings. This 180mm pump supports three fixed-speed levels, AUTO mode for adaptive performance, and both constant (CP1, CP2) and proportional pressure (PP1, PP2) operation. The inclusion of PWM GT and PWM ST functions allows it to be remotely managed using compatible thermostats or controllers, enhancing efficiency and integration with wider building systems. Ideal for recirculation loops and centralised water supply, the pump also benefits from advanced safety features such as thermal and electrical protection for dependable operation.   Features & Benefits: ✅ Hygienic EN1.4521 stainless steel body for potable water use ✅ 180mm length with 1" port connections for standard installations ✅ 10 automatic modes including AUTO, CP, and PP options ✅ Three fixed speeds for tailored performance control ✅ AUTO mode adjusts pump output to real-time demand ✅ Constant and proportional pressure settings optimise flow ✅ Built-in PWM GT & ST for remote frequency and control integration ✅ Compatible with Siemens, Honeywell, and other smart systems ✅ Electrical & thermal protection against external faults ✅ Designed for potable water circulation and recirculation

BritTherm Сirculator Pump S6 Series S6 25/18-180 (661999607)

The BritTherm S6 25/18-180 Circulator Pump offers a high-capacity and efficient solution for potable water circulation. Designed with a 180mm length and a corrosion-resistant stainless steel EN1.4521 casing, it’s ideal for demanding domestic and commercial systems. The pump features 10 automatic operating modes including AUTO, constant pressure, and proportional pressure settings. Built-in PWM GT and ST functions allow integration with external controllers like Honeywell and Siemens, enabling remote operation and frequency control. Safety is enhanced through dedicated electrical and thermal protection, making this pump a reliable and smart choice. Built for performance and durability, the BritTherm Circulator Pump S6 25/18-180 is an advanced circulator pump specifically designed for potable water use. With a 180mm body and an EN1.4521 stainless steel casing, it ensures hygienic operation and long service life. The pump boasts a user-friendly control interface, offering three fixed speed settings and multiple automation options tailored to different system demands. The inclusion of AUTO mode simplifies operation by automatically adjusting the pump to suit current flow and pressure requirements. Users can also choose between two constant pressure modes (CP1 & CP2) and two proportional pressure modes (PP1 & PP2) for optimal system performance. The integration of PWM GT and ST allows the pump to be remotely controlled by third-party controllers, making it suitable for intelligent building management systems. Its built-in electrical and thermal protection prevents damage caused by external electrical faults or overheating.   Features & Benefits: ✅ EN1.4521 stainless steel body ideal for potable water systems ✅ 180mm body length suits larger installations ✅ AUTO mode optimises pump performance automatically ✅ Three fixed speed levels for manual control ✅ CP1 & CP2 constant pressure modes maintain flow stability ✅ PP1 & PP2 proportional pressure modes for energy efficiency ✅ Integrated PWM GT & ST for smart remote control ✅ Compatible with Honeywell, Siemens, and more ✅ Electrical & thermal safety systems built in ✅ Perfect for circulation and recirculation applications

BritTherm Сirculator Pump S6 Series S6 25/10-180 (661999601)

The BritTherm S6 25/10-180 Circulator Pump is a cutting-edge solution designed for high-performance potable water circulation systems. Featuring a robust stainless steel EN1.4521 casing and enhanced functionality, it includes 10 intelligent operating modes plus PWM GT and PWM ST functions for seamless integration with smart thermostats and controllers. With AUTO mode, fixed speeds, and both constant and proportional pressure settings, this 180mm pump offers unmatched flexibility, efficiency, and remote control capabilities for large-scale water and heating systems. The BritTherm Circulator Pump S6 Series S6 25/10-180 sets a new standard for smart water circulation. Crafted with a corrosion-resistant stainless steel EN1.4521 casing, this pump is tailored for use in potable water systems, making it ideal for domestic and commercial installations. It offers 10 automatic operating modes, including three fixed speeds, AUTO mode for adaptive energy-efficient operation, constant pressure modes (CP1 and CP2), and proportional pressure modes (PP1 and PP2) to meet variable system demands. Uniquely, the S6 Series introduces PWM GT and PWM ST control functions, enabling remote pump regulation via low-voltage signal. This allows direct integration with smart thermostats and building automation systems such as Siemens and Honeywell. Electrical and thermal protection ensures the pump remains safe from faults not caused by pump operation. This intelligent 180mm model is built for performance, connectivity, and reliability.   Features & Benefits: ✅ Stainless steel EN1.4521 casing for potable water use ✅ Extended 180mm body for versatile installations ✅ 10 automatic operating modes for optimal flexibility ✅ Three fixed speeds for precise manual control ✅ AUTO mode optimises energy usage and performance ✅ CP1 & CP2 modes maintain consistent system pressure ✅ PP1 & PP2 modes adapt output based on demand ✅ Built-in PWM GT and ST for remote thermostat control ✅ Compatible with Siemens, Honeywell and more ✅ Electrical and thermal protection for pump safety

BritTherm Replacement Pump Head H3 Series H3 25/6 (661996505)

The BritTherm H3 25/6 Replacement Pump Head is a high-efficiency solution designed for modern combi boilers and smart heating systems. Featuring universal PWM control and a anti clockwise rotor, this motor head is compatible with top-tier thermostats including Siemens and Honeywell. With 11 automatic modes, 3 fixed-speed settings, and a night power-saving function, it ensures energy-conscious, responsive heating performance in domestic and renewable applications. Designed for precision control and long-lasting performance, the BritTherm H3 Series H3 25/6 replacement pump head is a versatile, smart-ready electric motor ideal for replacing worn-out units in combi boilers. It features a anti clockwise rotating rotor and universal PWM (Pulse Width Modulation) control, enabling remote speed regulation via the boiler’s PCB or third-party smart thermostats like Honeywell or Siemens. The motor head is suitable for integration into advanced heating systems, including solar thermal, underfloor heating, and “smart home” setups. It offers 11 automatic work programmes alongside 3 fixed-speed options (“Old School”), providing flexibility to meet varying heating demands. Its intelligent night mode reduces energy usage to as little as 5 watts when demand is low—perfect for improving efficiency without compromising performance. Built-in thermal and electrical protection ensures durability even in challenging conditions.   Features & Benefits: ✅ PWM control for remote speed adjustment ✅ Compatible with Honeywell, Siemens, and smart controllers ✅ Anti clockwise rotation for combi boiler systems ✅ 11 automatic programmes plus 3 fixed-speed modes ✅ Ideal for smart homes, underfloor, and solar systems ✅ Night mode cuts energy use to just 5 watts ✅ Built-in PWM processor for seamless integration ✅ Improves system responsiveness and energy efficiency ✅ Thermal and electrical protection for long-term reliability ✅ Simple installation for direct replacement

BritTherm Replacement Pump Head H3 Series H3 25/8 (661996508)

The BritTherm H3 25/8 Replacement Pump Head is a high-efficiency, universal electric motor designed for use in modern combination gas boilers requiring anti-clockwise rotor rotation. Built for maximum compatibility and efficiency, this pump head is remotely controlled via low-voltage PWM signals from the boiler’s circuit board. Fully compatible with smart home systems, thermostats, and renewable energy setups, the H3 25/8 offers 11 automatic programmes and 3 constant-speed settings. It also includes night-time power reduction and advanced protection against electrical and thermal faults, making it a reliable upgrade or replacement solution. The BritTherm H3 25/8 Pump Head is part of the versatile H3 Series, offering reliable and energy-efficient performance for modern gas boilers. Designed to rotate anti-clockwise, this replacement pump head integrates seamlessly into boiler systems using universal PWM (Pulse Width Modulation) technology. It accepts low-voltage control signals via a dedicated cable from the boiler’s electronic board, enabling smooth and efficient remote rotor speed management. Ideal for smart heating systems, the H3 25/8 is compatible with major thermostat brands such as Siemens and Honeywell. It supports 11 automatic operation modes and 3 traditional fixed-speed settings, suiting a variety of system demands. The built-in Night Power Reduction function lowers energy consumption to just 5 watts without compromising heating quality. With integrated electrical and thermal protection systems, this pump head ensures long-lasting, reliable operation and safeguards against external damage.   Features & Benefits: ✅ Universal compatibility with modern gas boilers ✅ Anti-clockwise rotor rotation for accurate system integration ✅ Remotely controlled via PWM low-voltage signal ✅ Compatible with smart thermostats and controllers (e.g., Siemens, Honeywell) ✅ Ideal for underfloor heating, solar systems, and heat pumps ✅ 11 automatic operation programmes + 3 fixed-speed modes ✅ Built-in Night Power Reduction – consumes as little as 5W ✅ Energy-efficient without compromising heating performance ✅ Electrical and thermal protection ensures pump longevity ✅ Suitable for smart home and renewable energy systems ✅ Easy upgrade or replacement option for faulty motors

BritTherm Replacement Pump Head H4 Series H4 25/4 (661996602)

The BritTherm H4 25/4 Replacement Pump Head is a universal electric motor designed for repair and replacement in modern combination gas boilers. Featuring advanced PWM technology for remote rotor speed control, it integrates seamlessly with smart home controllers and diverse heating systems such as underfloor heating, solar, and heat pumps, ensuring efficient and adaptable heating performance. The BritTherm Replacement Pump Head H4 Series H4 25/4 offers reliable and versatile operation for modern domestic heating solutions. Its universal motor supports clockwise rotor rotation and is controlled remotely via PWM (Pulse Width Modulation) signals from the boiler’s electronic board, connected through a special control cable. Thanks to the built-in PWM function in the motor processor, the H4 Series motors are compatible with a wide range of controllers and thermostats, including Siemens and Honeywell, making them ideal for smart home systems. This flexibility extends to various heating setups such as underfloor heating, solar thermal systems, and heat pumps. Equipped with 11 automatic operation modes, including three constant fixed speeds (“Old School”), the pump head offers precise control tailored to your heating system’s needs. Its Automatic Night Power Reduction function lowers energy consumption to a mere 5 watts without compromising heating quality, contributing significantly to energy savings. Robust electrical and thermal protection mechanisms protect the pump from damage caused by external factors, enhancing durability and reliability.   Features & Benefits: ✅ Universal motor with remote PWM rotor speed control ✅ Compatible with Siemens, Honeywell, and other smart thermostats ✅ Suitable for clockwise rotor rotation in combination boilers ✅ 11 automatic operating programmes, including 3 fixed speeds ✅ Energy-saving night mode reduces power to 5 watts ✅ Ideal for smart homes, underfloor heating, solar, and heat pumps ✅ Built-in electrical and thermal protection for durability ✅ Easy installation with dedicated control cable

BritTherm Replacement Pump Head H4 Series H4 25/6 (661996605)

The BritTherm H4 25/6 Replacement Pump Head is a versatile and energy-efficient clockwise-rotating motor head ideal for combination gas boilers. Designed with built-in PWM (Pulse Width Modulation) functionality, it allows seamless remote control of rotor speed via a low-voltage signal from the boiler’s electronic board. Compatible with leading thermostat brands such as Siemens and Honeywell, the H4 25/6 is a dependable solution for modern heating systems including underfloor heating, solar installations, and heat pumps. Optimise your central heating system with the BritTherm H4 25/6, a reliable and easy-to-install replacement pump head built for clockwise rotor operation. This advanced motor uses PWM technology for remote speed adjustment and integrates directly with your boiler’s controller for smart, efficient operation. The H4 25/6 is equipped with 11 automatic operating programmes and 3 constant-speed modes, giving it the flexibility to handle a variety of domestic heating requirements. Its energy-saving night mode reduces consumption to just 5 watts without sacrificing performance. Built-in thermal and electrical protection ensure long-term reliability, making this unit ideal for any homeowner or engineer seeking a robust, energy-conscious upgrade.   Features & Benefits: ✅ Clockwise rotation for compatibility with a wide range of boilers ✅ Integrated PWM for smart remote speed control ✅ Compatible with Siemens, Honeywell, and other thermostat systems ✅ Suitable for smart home, solar, and heat pump systems ✅ 11 automatic operation programmes ✅ 3 constant “Old School” speed settings ✅ Night Power Reduction Function (down to 5W) ✅ Built-in protection against electrical and thermal faults ✅ Easy to retrofit and install ✅ Boosts system efficiency and reduces energy bills ✅ Designed for modern heating system upgrades

BritTherm Replacement Pump Head H4 Series H4 25/8 (661996608)

The BritTherm H4 25/8 Replacement Pump Head is designed for modern combination gas boilers requiring clockwise rotor rotation. Featuring built-in PWM technology, this motor allows precise remote control of rotor speed via a low-voltage signal from the boiler’s electronic board. Compatible with a variety of controllers and thermostats such as Siemens and Honeywell, it is ideal for integration into smart homes, underfloor heating, solar thermal, and heat pump systems. Enhance your heating system with the BritTherm H4 25/8, a universal electric motor pump head designed for clockwise rotation in combination boilers. The motor’s integrated PWM processor facilitates remote speed control through the boiler’s electronic system, enabling smooth and efficient operation tailored to your home’s needs. This pump head supports 11 automatic work programmes, including three constant fixed speeds for traditional setups. Its Automatic Night Power Reduction Function lowers energy consumption to just 5 watts during low-demand periods, contributing significantly to energy savings without compromising heating performance. Robust electrical and thermal protection systems safeguard the pump against faults caused by external factors unrelated to its operation, ensuring reliability and long service life. This pump is perfect for heating engineers and homeowners aiming to upgrade or maintain efficient heating systems.   Features & Benefits: ✅ Clockwise rotor design for wide boiler compatibility ✅ Built-in PWM for seamless remote speed control ✅ Compatible with Siemens, Honeywell, and other thermostats ✅ Suitable for smart home, underfloor heating, solar, and heat pump systems ✅ 11 automatic operating programmes plus 3 fixed speed modes ✅ Automatic Night Power Reduction cuts energy use to 5 watts ✅ Electrical and thermal protection for enhanced durability ✅ Easy retrofit replacement for modern combination boilers ✅ Improves heating system efficiency and reduces running costs

BritTherm Automatic Сirculator Pump P5 Series P5 25/4-130 (661995702)

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’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’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.   Features & Benefits: ✅ 4-metre head height—perfect for compact heating setups ✅ 25mm connection size with 130mm body length ✅ PWM GT & 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

BritTherm Automatic Сirculator Pump P5 Series P5 25/5-130 (661995706)

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’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’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.   Features & 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 & 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

BritTherm Automatic Сirculator Pump P5 Series P5 25/6-130 (661995710)

The BritTherm P5 25/6-130 Circulator Pump is a high-performance solution for heating systems that require extra pressure. Offering a 6-metre head and compact 130mm body, this smart circulator is compatible with boilers, heat pumps, and HIUs. With 10 operation modes, dual PWM inputs for smart controls, and built-in night power reduction, it ensures efficient and responsive heating across a wide range of applications. The BritTherm P5 25/6-130 Circulator Pump is a compact and powerful pump tailored for domestic HVAC applications where higher pressure is required in a limited space. Its 6-metre head capability makes it perfect for multi-zone systems or larger properties with more demanding heating needs. This pump features 10 built-in operation modes, including an intuitive AUTO setting suitable for the majority of UK homes. With constant and proportional pressure settings, installers can fine-tune performance to suit underfloor heating or traditional radiator systems. For legacy applications, the pump offers three fixed-speed modes. Dual PWM ports (GT and ST) enable integration with modern thermostats and controls from brands such as Honeywell and Siemens. An automatic night-time energy reduction function further enhances its efficiency by reducing power draw to just 5 watts when not in full demand. Safety is prioritised through robust electrical and thermal protection systems, shielding the pump from external faults like dry running or voltage surges, making it a reliable upgrade for installers and homeowners alike.   Features & Benefits: ✅ High 6-metre head for demanding heating systems ✅ Compact 130mm body suits most modern installations ✅ 25mm ports for standard domestic compatibility ✅ AUTO mode simplifies setup for 80% of systems ✅ Constant and proportional pressure settings for custom performance ✅ Fixed-speed modes for legacy system replacement ✅ 5W night-time power saving mode improves energy efficiency ✅ GT and ST PWM ports for smart control integration ✅ Fully protected against thermal and electrical damage ✅ Compatible with Honeywell, Siemens, and other popular controllers

BritTherm Automatic Сirculator Pump P5 Series P5 25/7-130 (661995714)

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.   Features & 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

BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)

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.   Features & 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

BritTherm Automatic Сirculator Pump P5 Series P5 32/6-180 (661995712)

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.   Features & 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

BritTherm Automatic Сirculator Pump P5 Series P5 32/7-180 (661995716)

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.   Features & 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

BritTherm Automatic Сirculator Pump P5 Series P5 32/8-180 (661995720)

The BritTherm P5 32/8-180 Circulator Pump is a high-capacity pump engineered for a wide range of HVAC applications, including boilers, HIUs, and heat pumps. Featuring dual PWM functionality (GT and ST), it offers advanced remote control compatibility with leading thermostats such as Honeywell and Siemens. The pump supports 10 automatic operating modes, ensuring efficient performance in both fixed and dynamic systems. With automatic night power reduction to 5 watts and integrated protection systems, it's a durable, cost-effective solution for larger heating circuits. The BritTherm P5 32/8-180 is a robust circulator pump designed for demanding domestic HVAC systems. Whether installed in a boiler, HIU, or heat pump setup, this model provides outstanding performance and control. Its dual PWM modes (GT and ST) enable seamless integration with a wide range of low-voltage thermostats and controllers, including Siemens and Honeywell. Equipped with 10 automatic operating modes, it adapts effortlessly to various system types. AUTO mode covers the majority of heating setups, while CP1 and CP2 maintain consistent performance for underfloor heating. PP1 and PP2 dynamically adjust to changes in flow rate, making it perfect for variable demand systems. Traditionalists will appreciate the inclusion of three fixed-speed settings for manual control. Energy-saving functionality is built in, with an automatic night mode that reduces consumption to just 5 watts, maintaining comfort while cutting energy use. Thermal and electrical protection safeguards the pump from damage due to external faults, adding reliability and peace of mind.   Features & Benefits: ✅ Heavy-duty 32mm circulator with 8-metre head height ✅ Dual PWM control (GT & ST) for precision remote operation ✅ 10 operating modes for full system adaptability ✅ AUTO mode ideal for 80% of heating systems ✅ CP1 & CP2 constant pressure modes for underfloor systems ✅ PP1 & PP2 for systems with high flow variability ✅ Classic 3-speed settings for manual adjustment ✅ Energy-saving night mode reduces power use to 5W ✅ Integrated electrical and thermal protection ✅ Compatible with Siemens, Honeywell & most control systems

BritTherm Automatic Сirculator Pump P6 Series P6 32/10-180 (661995802)

The BritTherm P6 32/10-180 is a robust, high-efficiency circulator pump designed for larger domestic and commercial heating systems. With its 32mm connection size and 10m maximum head, this smart pump is ideal for high-capacity underfloor heating and complex radiator circuits. Featuring 10 automatic modes and dual PWM functions, it delivers excellent versatility, low energy consumption, and smart control compatibility. The BritTherm Automatic Circulator Pump P6 32/10-180 is a powerful addition to the P6 Series, offering larger bore 32mm connections for increased flow capacity. Its 10m head performance makes it ideal for applications where a high flow rate is required across large or multi-zone systems. This advanced pump includes AUTO, constant pressure, and proportional pressure modes to optimise performance and energy use depending on system demands. Installers will appreciate the legacy three-speed manual settings, while the GT and ST PWM control options enable smart integration with leading thermostats like Siemens and Honeywell. Built-in thermal and electrical protection systems ensure safe, continuous operation even in challenging environments.   Features & Benefits: ✅ 32mm connections for higher system flow capacity ✅ 10m head height for demanding multi-zone setups ✅ 10 intelligent operating modes for all heating needs ✅ Three-speed manual settings for traditional control ✅ Dual PWM inputs for remote control integration ✅ Compatible with Siemens, Honeywell, and more ✅ Ideal for underfloor and high-volume radiator systems ✅ Energy-saving AUTO and night modes ✅ Quiet, reliable, and efficient operation ✅ Built-in thermal and electrical protection for safety

BritTherm Automatic Сirculator Pump P6 Series P6 32/12-180 (661995804)

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.   Features & Benefits: ✅ 12m head height for large, multi-zone systems ✅ 32mm ports allow high flow capacity ✅ AUTO Mode fits 80% of heating setups ✅ Constant & proportional pressure modes for fine control ✅ Three-speed manual settings for traditional setups ✅ Dual PWM control (GT & 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

BritTherm Automatic Сirculator Pump P6 Series P6 32/15-180 (661995806)

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’re fitting a high-volume domestic system or light commercial heating, this pump ensures consistent, efficient circulation.   Features & 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 & 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

BritTherm Automatic Сirculator Pump P6 Series P6 32/18-180 (661995808)

The BritTherm P6 32/18-180 is the most powerful circulator pump in the P6 range, offering exceptional flow performance with an 18-metre maximum head. Designed for large-scale HVAC systems, underfloor heating circuits, and multi-zone installations, this pump combines intelligent automation with rugged build quality. It features 10 advanced operating modes, PWM control compatibility, and integrated safety protections for high-efficiency, long-term use. When only the highest performance will do, the BritTherm P6 32/18-180 stands out with its maximum 18m head height, designed for complex and large-capacity heating systems. Whether you're working on commercial properties, large domestic builds, or extensive underfloor circuits, this 180mm circulator pump offers the power, precision, and control needed for smooth operation. It includes 10 user-selectable modes, covering AUTO operation, constant and proportional pressure control, fixed-speed settings, and full PWM functionality with GT and ST modes. PWM compatibility enables integration with leading smart heating systems from Siemens, Honeywell, and others. The unit is safeguarded by robust electrical and thermal protection features, making it a dependable choice for high-demand applications. Features & Benefits: ✅ Maximum 18m head for industrial and large-system use ✅ 32mm connections for high-capacity flow rates ✅ One-button AUTO mode suits most installations ✅ Two constant and two proportional pressure settings ✅ Three fixed speeds for traditional systems ✅ GT & ST PWM modes for smart remote control ✅ Compatible with Siemens, Honeywell & other thermostats ✅ Built-in thermal and electrical protection ✅ Designed for large homes, commercial and HVAC systems ✅ Quiet and energy-efficient performance

BritTherm Automatic Сirculator Pump P4 Series P4 25/4-130 (661995602)

The BritTherm P4 25/4-130 Circulator Pump delivers reliable and adaptable performance for a wide range of heating applications, including boilers, heat pumps, and HIUs. Featuring 11 automatic modes and a powerful 4-metre head, this 25mm pump offers superb efficiency and control. The integrated PWM function ensures compatibility with modern thermostats and smart controllers, making it ideal for underfloor and variable-flow systems. The BritTherm P4 25/4-130 Circulator Pump is engineered for efficiency, adaptability, and modern system integration. With a 130mm body and 25mm connections, this pump is perfect for domestic HVAC installations where space and performance go hand-in-hand. Its 4-metre head offers sufficient power for small to mid-size systems, ensuring effective circulation and comfort. Designed to meet the demands of diverse systems, this model includes 11 operating modes: three fixed-speed options for traditional control, AUTO mode for system-responsive performance, and six dynamic pressure settings—three constant (CP1–CP3) and three proportional (PP1–PP3). These modes support everything from underfloor heating to multi-zone heating systems. The P4 25/4-130 also features a PWM (Pulse Width Modulation) interface, allowing low-voltage remote control integration with leading thermostat brands like Honeywell and Siemens. Safety is assured with inbuilt electrical and thermal protection, guarding against common issues such as voltage spikes and overheating.   Features & Benefits: ✅ 25mm connection with a 4-metre head for compact system circulation ✅ Space-saving 130mm body suitable for modern installations ✅ 11 smart work programmes including AUTO and adaptive pressure control ✅ PWM function enables remote control integration with smart thermostats ✅ Compatible with Honeywell, Siemens, and other controller systems ✅ Ideal for HIUs, heat pumps, and underfloor heating ✅ AUTO mode intelligently adapts to system demand ✅ Built-in electrical and thermal protection for long-lasting reliability ✅ Energy-saving performance with night power reduction ✅ Easy setup and simple operation with intuitive control panel

BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)

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.   Features & 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

BritTherm Automatic Сirculator Pump P4 Series P4 25/6-180 (661995607)

The BritTherm P4 25/6-180 Circulator Pump is a high-performance solution for larger domestic and light commercial heating systems. Featuring a 6-metre head and a 180mm body, this model is perfect for systems requiring extended spacing or direct replacement of longer pumps. With 11 automatic work modes and PWM compatibility, it's ideal for smart-controlled, energy-efficient setups using boilers, HIUs, or heat pumps. Designed for powerful performance and intelligent control, the BritTherm P4 25/6-180 brings adaptability and efficiency to a wide range of heating applications. With 25mm ports and a 180mm body length, it provides a practical solution for systems with specific installation requirements. This model supports 11 automatic work programmes, including AUTO mode for most installations, three constant pressure modes for underfloor heating, and three proportional pressure modes for varying flow rates. It also features three fixed-speed settings for compatibility with traditional systems. A standout feature is its built-in PWM function, allowing remote speed control via low-voltage cables, fully compatible with control systems from major brands like Siemens and Honeywell. Safety is prioritised with built-in thermal and electrical protection, ensuring reliable performance even in demanding environments.   Features & Benefits: ✅ 25mm connections with extended 180mm body length ✅ 6-metre head – suitable for larger heating circuits and zoned systems ✅ 11 operating modes for maximum flexibility ✅ AUTO, proportional, and constant pressure control ✅ PWM compatibility for smart thermostats and BMS integration ✅ Excellent for underfloor heating and mixed radiator systems ✅ Electrical and thermal protection prevents pump damage ✅ One-button operation for quick setup ✅ Ideal for both new builds and replacement installations ✅ BritTherm quality for long-lasting performance

BritTherm Automatic Сirculator Pump P4 Series P4 25/8-130 (661995610)

The BritTherm P4 25/8-130 Circulator Pump delivers powerful performance and high-efficiency circulation for larger heating systems. With an 8-metre head and compact 130mm body length, it's perfect for high-demand domestic and light commercial installations. Its integrated PWM function ensures compatibility with smart controls, while 11 operating modes make it highly versatile for any HVAC application, including HIUs, heat pumps, and boilers. Engineered for maximum performance and system flexibility, the BritTherm P4 25/8-130 is a robust circulator pump with a high 8-metre head, ideal for demanding applications such as large heating zones, multi-floor systems, and energy-efficient upgrades. Its 25mm connections and standard 130mm body length make installation simple, while the advanced control options cater to both traditional and modern setups. The pump features AUTO mode, three fixed-speed modes, three constant pressure settings, and three proportional pressure modes. Whether you're maintaining consistent flow in underfloor systems or managing pressure in complex radiator layouts, this pump adapts effortlessly. The PWM control capability allows remote frequency adjustment via low-voltage cables, integrating smoothly with thermostats and controllers from leading brands like Honeywell and Siemens. Built-in thermal and electrical protection safeguards against damage from power fluctuations or system anomalies.   Features & Benefits: ✅ High-performance 8-metre head for demanding heating systems ✅ Compact 130mm body for standard pump replacements ✅ 11 intelligent work modes, including AUTO and pressure-based settings ✅ PWM-compatible for smart controls and home automation systems ✅ Suitable for underfloor heating, radiators, HIUs, and heat pumps ✅ One-button operation simplifies setup and control ✅ Thermal and electrical protection for extended reliability ✅ Versatile integration with modern and legacy systems ✅ Whisper-quiet operation for noise-sensitive environments ✅ Manufactured to BritTherm’s high standards for long-term durability

BritTherm Automatic Сirculator Pump P4 Series P4 25/8-180 (661995611)

The BritTherm P4 25/8-180 Circulator Pump is a high-efficiency solution designed for large-capacity heating systems. With a powerful 8-metre head and extended 180mm body, this model is ideal for larger pipework installations requiring maximum flow and flexibility. Featuring 11 intelligent operating modes and full PWM control compatibility, it integrates seamlessly with modern heating systems including HIUs, boilers, and heat pumps. Designed for high-output systems, the BritTherm P4 25/8-180 provides robust circulation across all types of HVAC applications. Its 180mm body and 25mm connections are perfect for commercial or large-scale domestic systems where a longer pump body is required for retrofit or design compliance. With an impressive 8-metre head, the P4 25/8-180 delivers reliable performance in complex installations such as multi-zone heating and underfloor layouts. The AUTO mode suits most heating systems, while the constant and proportional pressure settings ensure optimal efficiency across varying flow demands. Equipped with PWM control, this pump connects to low-voltage thermostat systems from brands like Siemens and Honeywell, enabling smart, responsive control. Built-in electrical and thermal protection features provide peace of mind against power faults and overheating, helping maintain pump integrity over time.   Features & Benefits: ✅ Extended 180mm body for larger pipework configurations ✅ High 8-metre head ideal for demanding heating systems ✅ 11 programmable modes including AUTO and pressure control options ✅ PWM-compatible for smart home and commercial system integration ✅ Perfect for underfloor heating, radiators, HIUs, and energy-efficient upgrades ✅ Simple one-button operation for quick setup and adjustments ✅ Thermal and electrical protection enhances system safety ✅ Compatible with leading control systems including Siemens and Honeywell ✅ Silent operation, suitable for domestic or commercial settings ✅ Engineered by BritTherm for long-term reliability and performance

MacDonald Plumbing Supplies Universal 240V Synchron Motor

The Universal 240V Synchron Motor is a versatile component suitable for most 2-port and 3-port motorised valves in central heating systems. By replacing just the motor, you can save on costly valve replacements and avoid hiring a plumber. This DIY-friendly motor ensures your central heating system operates efficiently.