BritTherm Replacement Pump Head H2 Series H2 15/6 (661996402)

The BritTherm H2 15/6 Replacement Pump Head offers a time-tested, three-speed electric motor solution for heating systems requiring clockwise rotor rotation. Designed for universal application across a wide range of pump types, it features a simple mechanical switch for manual speed selection. With a robust build, very low operational noise, and easy installation, this replacement pump head is ideal for both domestic and light commercial settings. Supplied with universal bolts and straightforward wiring compatibility, the H2 15/6 is a reliable, hassle-free upgrade for worn or ageing pump heads. The BritTherm Replacement Pump Head H2 15/6 is a dependable three-speed electric motor built to accommodate heating systems with clockwise rotor rotation. Ideal for maintaining system performance without replacing the entire pump, the H2 head is engineered for efficiency, quiet operation, and ease of use. The rotor speed is selected using a mechanical three-position switch, offering low, medium, and high-speed settings to match system demand. Installation is quick and simple thanks to the included set of multi-purpose mounting bolts, and its standard electrical connectors make integration into most boilers straightforward. Perfect for both domestic and commercial applications, the H2 15/6 is a practical replacement head for any compatible circulation pump system.   Features & Benefits: ✅ 3-speed motor for flexible performance control ✅ Clockwise rotor rotation compatibility ✅ Simple mechanical switch for speed selection ✅ Quiet operation ideal for home environments ✅ Universal bolts included for fast installation ✅ Easy electrical connection into existing boiler systems ✅ Reliable and long-lasting motor design ✅ Suitable for various circulation pump types ✅ Ideal replacement for ageing or noisy pump heads ✅ Compact and efficient motor solution

BritTherm Replacement Pump Head H1 Series H1 15/6 (661996302)

The BritTherm H1 15/6 Replacement Pump Head is a versatile and reliable electric motor, suitable for a wide range of domestic and commercial heating pump applications. With a simple mechanical three-speed control switch, users can manually select the desired pump speed to suit system requirements. Designed for pumps with anti-clockwise rotor rotation, this replacement head is engineered for low-noise performance and straightforward installation. Supplied with universal mounting bolts and easy electrical connections, it’s an ideal drop-in solution for maintaining or upgrading your heating system. Product Description: The BritTherm Replacement Pump Head H1 15/6 is a durable, multi-purpose electric motor unit ideal for replacing worn or noisy heads in standard heating circulation pumps. Its compact, classic design includes a counter-clockwise rotor and a robust three-speed control that allows you to manually adjust the motor to low, medium, or high speed via a mechanical switch. Designed for simplicity, this pump head is extremely easy to install with its included set of multi-purpose bolts and standard electrical connection compatibility. The unit also delivers whisper-quiet operation, making it well-suited for both residential and light commercial environments. Whether you’re upgrading or replacing, the H1 15/6 ensures continued pump performance with minimal fuss.   Features & Benefits: ✅ Classic 3-speed motor for flexible system control ✅ Mechanical switch for reliable speed adjustment ✅ Designed for pumps with anti-clockwise rotor rotation ✅ Very low noise during operation ✅ Quick and easy installation with included universal bolts ✅ Straightforward connection to boiler electrics ✅ Robust and time-tested design ✅ Ideal for a wide range of heating applications ✅ Compact and efficient motor housing ✅ Maintains pump performance without full replacement

BritTherm Сirculator Pump S4 Series S4 25/5-180 (661999406)

The BritTherm S4 25/5-180 Circulator Pump delivers smart, efficient performance for potable water circulation systems. With a 180mm body length and 1½" BSP connections, it is ideal for larger installations or replacements requiring extended centre spacing. The pump features nine intelligent operating modes including AUTO, constant pressure, and proportional pressure, designed to adapt to system needs while saving energy. A durable stainless steel casing makes it safe for drinking water applications. Designed for efficient circulation and recirculation of clean potable water, the BritTherm Circulator Pump S4 25/5-180 brings together intelligent technology and robust construction. The unit is equipped with 9 versatile modes to suit all system demands, from constant and proportional pressure settings to energy-saving AUTO and Night Modes. Its EN1.4521 stainless steel casing ensures hygienic water contact, while built-in thermal and electrical protection safeguards the pump against operational faults. The 180mm length suits wider pipework layouts, making it perfect for installations with specific spacing requirements. Quiet, adaptable and low-maintenance, this pump is an essential component for modern water systems.   Features & Benefits: ✅ 180mm body length with 1½" BSP connections ✅ EN1.4521 stainless steel suitable for drinking water ✅ 9 operation modes, including AUTO and Night Mode ✅ Three manual fixed-speed settings for flexibility ✅ Constant pressure control: CP1 & CP2 ✅ Proportional pressure adjustment: PP1 & PP2 ✅ Energy-saving Night Mode drops usage to 5W ✅ Thermal and electrical safety protection ✅ Quiet, smart, and durable pump design ✅ Ideal for larger or retrofit installations

BritTherm Сirculator Pump B1 Series B1 25/8-180 (661996707)

The BritTherm B1 25/8-180 Circulator Pump is a durable bronze pump designed for circulating hot and cold drinking water in domestic heating and plumbing systems. With a higher head and longer 180mm body, it’s ideal for systems requiring more power or pressure. The manual three-speed setting offers full control, while integrated thermal and electrical protection ensures safe, reliable operation across a range of applications. The BritTherm Circulator Pump B1 Series B1 25/8-180 offers increased power and flexibility, making it the ideal solution for high-performance domestic heating and water systems. The bronze body construction ensures suitability for potable water, while the 180mm length is compatible with a wide variety of system layouts, especially those needing a higher head pump. This pump includes three manually selectable speed settings via a traditional mechanical switch – a proven and dependable feature for installers and engineers. Safety is prioritised with built-in electrical and thermal protection to prevent damage from overheating or electrical faults. A dependable, cost-effective upgrade or replacement pump for traditional and modern plumbing systems.   Features & Benefits: ✅ Three-speed manual switch for adjustable flow control ✅ Bronze construction for hot and cold potable water systems ✅ Extended 180mm body for greater installation flexibility ✅ Higher head for more demanding system requirements ✅ Thermal and electrical safety protection included ✅ Long-lasting and maintenance-friendly design

BritTherm Сirculator Pump B4 Series B4 25/5-180 (661999006)

The BritTherm B4 25/5-180 Circulator Pump is a high-efficiency solution for potable water circulation in larger systems. Designed with a 180mm body length and 25mm connections, it combines traditional fixed-speed control with nine intelligent operating modes, including AUTO, constant pressure, and proportional pressure options. With built-in energy-saving features and protective mechanisms, this pump delivers reliable performance, especially where longer pump bodies are required for direct replacements. The BritTherm Circulator Pump B4 25/5-180 is engineered for flexibility and long-lasting efficiency in heating and potable water systems. With its extended 180mm body, it is particularly suitable for direct replacement in installations requiring this size. Its 25mm ports support medium-head circulation applications, while the smart control system automatically adjusts performance for changing flow demands. The pump offers three manual speed options, AUTO mode for self-adjusting operation, two constant pressure settings (CP1 and CP2), and two proportional pressure modes (PP1 and PP2). For additional efficiency, the Night Operating Mode reduces power use to just 5 watts when demand is low. Electrical and thermal protection safeguards the unit from voltage fluctuations and overheating, making it a dependable choice for modern plumbing systems. Features & Benefits: ✅ Extended 180mm body ideal for replacement installations ✅ 25mm connections suitable for potable water circulation ✅ AUTO mode for intelligent, hands-free performance ✅ Three selectable fixed speeds ✅ Two constant pressure modes (CP1, CP2) ✅ Two proportional pressure modes (PP1, PP2) ✅ Night mode lowers energy usage to 5W ✅ Smooth and quiet operation ✅ Overheat and electrical protection included ✅ Simple, intuitive push-button controls

BritTherm Replacement Pump Head H3 Series H3 25/4 (661996502)

The BritTherm H3 25/4 Replacement Pump Head is designed to boost water pressure efficiently across household taps, showers, and other plumbing points. Equipped with a built-in check valve and an intelligent automatic start/stop programme, it adapts to changes in water flow and pressure, ensuring optimal performance and energy savings. The BritTherm Replacement Pump Head H3 Series H3 25/4 is engineered for domestic water pressure boosting with durability and smart functionality. It incorporates a built-in check valve inside the pump casing to prevent backflow and safeguard the system. The pump offers two operational modes: Manual Mode, providing a constant shaft speed until switched off manually, and AUTO Mode, which activates automatically when a tap is opened and stops when the tap closes, reacting swiftly to fluctuations in water flow and pressure. The pump’s volute casing is epoxy-coated for long-lasting corrosion resistance. Simple, single-button automation controls the pump in start/stop mode, making it user-friendly. These pumps are ideally paired with water tanks supplying potable water, delivering consistent pressure and improved water flow. Electrical and thermal protection features guard the pump against external damage, increasing reliability and lifespan.   Features & Benefits: ✅ Built-in check valve prevents backflow and protects the system ✅ AUTO Mode offers automatic start/stop based on water usage ✅ Manual Mode allows constant operation at fixed speed ✅ Epoxy-coated volute enhances durability and corrosion resistance ✅ Easy single-button activation for automated control ✅ Ideal for boosting water pressure to household taps and showers ✅ Suitable for use with drinking water tanks ✅ Electrical and thermal protection for extended pump life

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 25/6-130 (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 P3 Series P3 25/6-180 (661995511)

The BritTherm P3 25/6-180 Circulator Pump is a high-performance solution for domestic heating systems requiring a 180mm body length. With a 25mm connection size and 6-metre head, it provides reliable circulation across extended pipe runs. Featuring nine automatic modes—including AUTO, constant pressure, proportional pressure, and fixed-speed settings—it balances performance with energy efficiency. Its automatic night mode cuts power usage to just 5 watts, ideal for eco-conscious households. Designed for flexible and efficient heating system circulation, the BritTherm P3 25/6-180 Circulator Pump is the ideal upgrade or replacement for systems that require a 180mm pump length. It features a 25mm connection, a powerful 6-metre head, and nine operation modes tailored to suit a wide variety of domestic heating setups. The intuitive AUTO mode adapts performance automatically to match system demand, while constant pressure (CP1, CP2) and proportional pressure (PP1, PP2) modes allow for custom settings based on installation type. The traditional three-speed manual settings offer straightforward operation when preferred. Its accessible control panel allows for discreet installation, while the built-in electrical and thermal protection ensures long-term reliability. With an energy-saving night mode reducing consumption to just 5 watts, this pump is engineered for comfort and efficiency.   Features & Benefits: ✅ Extended 180mm body with 25mm connections ✅ 6-metre head for excellent circulation performance ✅ AUTO mode for smart adaptive control ✅ CP1 & CP2 constant pressure settings ✅ PP1 & PP2 proportional pressure control ✅ Three fixed-speed settings for manual operation ✅ Night mode cuts energy use to just 5 watts ✅ Electrical and thermal protection included ✅ Ideal for standard and retrofit heating systems ✅ Simple button control for all modes

BritTherm Automatic Сirculator Pump P3 Series P3 25/7-180 (661995515)

The BritTherm P3 25/7-180 Circulator Pump delivers robust performance and energy-efficient circulation for domestic heating systems. Designed with a 180mm body and a 7-metre head, it suits standard installations requiring extra length. With nine intelligent operating modes, including AUTO, constant and proportional pressure, and classic speed settings, this pump adapts effortlessly to changing system demands while saving energy with automatic night power reduction. Built for high-performance domestic heating systems, the BritTherm P3 25/7-180 Circulator Pump combines strong circulation with flexible installation. Featuring a 25mm connection size and an extended 180mm body, it’s ideal for replacing longer standard pumps. With a 7-metre head, it efficiently moves water throughout multi-level or larger homes. This model includes nine user-friendly operation modes. AUTO mode uses built-in intelligence to optimise performance for your heating system. The two constant pressure (CP1, CP2) and two proportional pressure (PP1, PP2) settings let you fine-tune system pressure based on flow. For traditionalists, three fixed-speed settings allow manual control across the full power range. Energy-saving features include automatic night mode, dropping consumption to just 5 watts without compromising warmth. Electrical and thermal protection systems safeguard the pump against power surges and overheating, ensuring reliable and durable operation.   Features & Benefits: ✅ 180mm extended body for standard pump replacements ✅ High-performance 7-metre head for large systems ✅ 25mm connections for easy integration ✅ AUTO mode for dynamic system adjustment ✅ CP1 & CP2 for constant pressure control ✅ PP1 & PP2 proportional pressure settings ✅ Manual 3-speed operation ✅ Night mode for reduced power use (5 watts) ✅ Thermal and electrical protection built-in ✅ Ideal for larger or multi-floor heating systems

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 P1 Series P1 25/10-180 (661995320)

The BritTherm P1 25/10-180 Circulator Pump is a high-performance solution for demanding heating systems. Featuring a powerful 10-metre head and a standard 180mm length, this pump combines intelligent operation with energy-saving features. It offers AUTO Mode for effortless optimisation and traditional three-speed manual control. Built-in thermal and electrical protection enhances reliability, making it ideal for both residential and light commercial installations that require superior performance. Engineered for high-demand heating applications, the BritTherm Automatic Circulator Pump P1 Series P1 25/10-180 offers enhanced flow capability with a 10-metre head height, making it suitable for large properties and extended pipework. The 25mm connection size ensures compatibility with most UK heating systems, while the 180mm body length allows for straightforward replacement in standard installations. The smart AUTO Mode adjusts pump performance to match heating demand, reducing energy use without sacrificing comfort. For installers who prefer manual control, the pump includes three fixed-speed settings. Additionally, a night-time power-saving mode reduces energy consumption to as low as 5 watts. Thermal and electrical protections are built in for added peace of mind, guarding against faults and overloads.   Features & Benefits: ✅ 10-metre head for high-demand systems ✅ AUTO Mode adjusts flow to system needs ✅ Traditional three-speed control option ✅ 5W automatic night-time energy saving ✅ Built-in thermal & electrical protection ✅ 180mm pump length for easy replacement ✅ Suitable for residential or light commercial systems

BritTherm Automatic Сirculator Pump P1 Series P1 25/12-130 (661995322)

The BritTherm P1 25/12-130 Circulator Pump is a compact, high-performance unit delivering a 12-metre head height for demanding central heating systems. With 130mm body length and 25mm connections, it offers an ideal balance of power and space-saving design. Featuring AUTO Mode for energy-efficient performance and manual speed options for precise control, this pump is perfect for new installations or direct replacements where powerful flow is required in a compact format. The BritTherm P1 Series P1 25/12-130 is designed to handle more demanding heating applications with a high-performance 12-metre head. Despite its power, the 130mm length allows for easy installation in tight spaces, particularly where system upgrades are needed without major pipework changes. Four operating modes—including intelligent AUTO Mode—ensure this circulator pump can optimise energy use without compromising performance. Alternatively, engineers can select one of three manual speeds. The pump also includes an automatic night-time energy-saving mode, reducing power usage to just 5 watts during low-demand periods. With built-in thermal and electrical protection, the P1 25/12-130 is a robust and reliable choice for residential and light commercial use.   Features & Benefits: ✅ High 12m head for increased flow capacity ✅ Compact 130mm body for easy installation ✅ AUTO Mode intelligently adapts to system demand ✅ Three fixed speeds for traditional control ✅ 5W night power reduction for energy savings ✅ Built-in electrical and thermal protection ✅ Ideal for upgrades or restricted spaces

BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)

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.   Features & 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" BSP connections for standard system compatibility ✅ Quiet operation with low vibration ✅ Easy one-button interface for quick adjustments

Instantor 771928 Universal Pump Head Replacement Kit - 8 Metre with Wilo PWM Adaptor Cable

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.

Instantor 771929 Universal Pump Head Replacement Kit - 8 Metre CCW with Grundfos Adaptor Cable

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.