10 Best Combi Boiler Thermostat in the UK 2025
Updated on 09/08/2025
#1
Recommended
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- OpenTherm technology enhances efficiency by reducing gas consumption by up to 12%, extends boiler lifespan, and stabilizes room temperatures.
- User-friendly interface for quick temperature adjustments via the thermostat or the Hive app for scheduling and boosting heating or hot water.
- Geolocation feature alerts users to turn off heating when leaving home during scheduled heating times.
- Flexible heating schedules can be set with up to six time slots for each day of the week.
- Automatic frost protection engages heating when indoor temperatures fall below 7°C to prevent pipe freezing.
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- OpenTherm technology enhances efficiency by reducing gas consumption by up to 12%, extends boiler lifespan, and stabilizes room temperatures.
- User-friendly interface for quick temperature adjustments via the thermostat or the Hive app for scheduling and boosting heating or hot water.
- Geolocation feature alerts users to turn off heating when leaving home during scheduled heating times.
- Flexible heating schedules can be set with up to six time slots for each day of the week.
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#2
Value for Money
9% Off
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- Includes 50% discount on the annual Hive Heating plan with purchase
- Compact design with a mirrored surface and user-friendly display
- Easily adjust temperature via the thermostat or Hive app; set schedules and activate Holiday mode
- Geolocation reminders assist in energy-saving by turning off heating when leaving home
- Automatic frost protection activates heating if indoor temperature drops below 7°C
- Requires Hive Hub for remote and app-based control of heating
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- Includes 50% discount on the annual Hive Heating plan with purchase
- Compact design with a mirrored surface and user-friendly display
- Easily adjust temperature via the thermostat or Hive app; set schedules and activate Holiday mode
- Geolocation reminders assist in energy-saving by turning off heating when leaving home
- Automatic frost protection activates heating if indoor temperature drops below 7°C
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#3
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- Summer mode functionality requires compatibility with cooling systems; ensure the app and firmware are up to date for optimal use.
- Wi-Fi thermostat compatible with most boiler and water underfloor heating systems; supports heating control only, not hot water; voice and app control available with major platforms.
- Schedule up to 8 events per day for multiple rooms, visible daily temperature; supports home-sharing control via meross app even without Apple Home integration.
- Features dual temperature sensors for air and floor temperature measurement; switchable sensors for accurate heating control with a range of 5-35°C and 0.5°C accuracy.
- Open-window detection helps reduce heating costs by stopping the heating for 30 minutes when a drop in temperature is detected due to an open window.
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- Summer mode functionality requires compatibility with cooling systems; ensure the app and firmware are up to date for optimal use.
- Wi-Fi thermostat compatible with most boiler and water underfloor heating systems; supports heating control only, not hot water; voice and app control available with major platforms.
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#4
11% Off
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- OpenTherm technology optimizes heating efficiency by precisely managing heat requirements, resulting in up to 12% reduced gas consumption and enhancing boiler lifespan.
- Nano 3 Hub offers Wi-Fi connectivity with a dual-core processor for efficient performance and easy integration of Hive devices.
- HIVE Plus plan includes a 50% discount for added savings upon purchase.
- Supports up to 6 customizable daily heating and hot water schedules.
- Allows heating and hot water boost for a maximum of six hours as needed.
- Automatic frost protection feature prevents frozen pipes during cold weather.
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- OpenTherm technology optimizes heating efficiency by precisely managing heat requirements, resulting in up to 12% reduced gas consumption and enhancing boiler lifespan.
- Nano 3 Hub offers Wi-Fi connectivity with a dual-core processor for efficient performance and easy integration of Hive devices.
- HIVE Plus plan includes a 50% discount for added savings upon purchase.
- Supports up to 6 customizable daily heating and hot water schedules.
- Allows heating and hot water boost for a maximum of six hours as needed.
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#5
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- Digital display for easy readability
- Wireless connectivity for convenient placement
- Programmable thermostat for energy efficiency
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- Digital display for easy readability
- Wireless connectivity for convenient placement
- Programmable thermostat for energy efficiency
#6
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- Wired Thermostat: The ENGO E901 operates on a 2-wire system, powered by 2xAA batteries.
- Boiler Plus Compliant: Features a self-learning algorithm for energy savings, compliant with Boiler Plus standards, suitable for new installations or retrofits.
- Easy Programming: Includes a hidden button panel for programming up to 6 event changes each day, along with holiday and boost modes for quick heating adjustments.
- Support: Comes with an instruction manual, online resources, and direct support via phone or email. Installation videos are also available.
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- Wired Thermostat: The ENGO E901 operates on a 2-wire system, powered by 2xAA batteries.
- Boiler Plus Compliant: Features a self-learning algorithm for energy savings, compliant with Boiler Plus standards, suitable for new installations or retrofits.
- Easy Programming: Includes a hidden button panel for programming up to 6 event changes each day, along with holiday and boost modes for quick heating adjustments.
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#7
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- Reliable wireless range of up to 100m, allowing flexible placement of the thermostat in your home.
- Compatible with various heating systems, including combi, gas, oil boilers, and heat pumps, ensuring versatile use.
- Offers 7-day programming with up to six adjustable temperature settings per day, enabling tailored heating schedules.
- Meets Boiler Plus regulations and features a self-learning algorithm for improved energy efficiency.
- Central heating control optimizes comfort while reducing energy costs by avoiding heating unused areas.
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- Reliable wireless range of up to 100m, allowing flexible placement of the thermostat in your home.
- Compatible with various heating systems, including combi, gas, oil boilers, and heat pumps, ensuring versatile use.
- Offers 7-day programming with up to six adjustable temperature settings per day, enabling tailored heating schedules.
- Meets Boiler Plus regulations and features a self-learning algorithm for improved energy efficiency.
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#8
10% Off
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- Energy-saving Load Compensation feature ensures compliance with Boiler Plus regulations.
- OpenTherm technology allows for precise boiler control via gas valve management.
- Includes Optimisation Functions like Optimum Start and Optimum Stop for efficiency.
- Larger, easy-to-read LCD display facilitates straightforward operation and setup.
- Service Mode alerts users when a boiler service is due.
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- Energy-saving Load Compensation feature ensures compliance with Boiler Plus regulations.
- OpenTherm technology allows for precise boiler control via gas valve management.
- Includes Optimisation Functions like Optimum Start and Optimum Stop for efficiency.
- Larger, easy-to-read LCD display facilitates straightforward operation and setup.
- Service Mode alerts users when a boiler service is due.
#9
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- New OpenTherm feature optimizes heat delivery for improved energy efficiency and extends boiler lifespan.
- Set up to six daily schedules for heating and hot water management.
- Boost heating and hot water for up to six hours when needed.
- Automatic frost protection to prevent frozen pipes.
- Activate Holiday Mode to return to a pre-warmed home after your trip.
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- New OpenTherm feature optimizes heat delivery for improved energy efficiency and extends boiler lifespan.
- Set up to six daily schedules for heating and hot water management.
- Boost heating and hot water for up to six hours when needed.
- Automatic frost protection to prevent frozen pipes.
- Activate Holiday Mode to return to a pre-warmed home after your trip.
#10
15% Off
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- WiFi-enabled thermostat compatible with various heating systems, controllable via the 'Refoss' app or voice commands with Apple HomeKit, Alexa, and Google Home; supports 2.4GHz WiFi with no hub requirement.
- Features open window detection to conserve energy by automatically pausing heating for 30 minutes when an open window is detected; provides notifications through the app.
- Equipped with dual temperature sensors for accurate heating control: an internal sensor for air temperature and an external sensor (wired) for floor temperature; temperature control range of 5-35°C with 0.1°C accuracy.
- Allows for customizable scheduling with support for up to 8 events daily; enables multi-room control for efficient heating management based on your presence and schedule.
- Includes a summer mode function for cooling compatibility with systems such as air-to-air heat pumps; requires latest app version for certain features.
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- WiFi-enabled thermostat compatible with various heating systems, controllable via the 'Refoss' app or voice commands with Apple HomeKit, Alexa, and Google Home; supports 2.4GHz WiFi with no hub requirement.
- Features open window detection to conserve energy by automatically pausing heating for 30 minutes when an open window is detected; provides notifications through the app.
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