10 Best Combi Boiler Smart Thermostat in the UK 2025
Updated on 09/08/2025
#1
Recommended
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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#2
Value for Money
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- Wireless thermostat for easy installation and usage
- Compatible with boiler and hot water control
- Can be controlled via mobile app and smart speakers
- Compatible with Alexa, Siri, and Google Assistant
- Includes Stand and Bridge X in the Starter Kit
- Not compatible with tado° V3+
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- Wireless thermostat for easy installation and usage
- Compatible with boiler and hot water control
- Can be controlled via mobile app and smart speakers
- Compatible with Alexa, Siri, and Google Assistant
- Includes Stand and Bridge X in the Starter Kit
- Not compatible with tado° V3+
#3
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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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#4
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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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#5
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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.
#6
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- Hive Heating Plus includes a 50% discount on the annual plan upon purchase.
- Compatible with combi boilers, this Hive smart thermostat enhances heating control.
- Create up to six daily heating schedules for optimal energy management.
- Automatic Frost Protection feature prevents pipe freezing during cold weather.
- Requires Hive Hub for remote access and mobile app control of heating functions.
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- Hive Heating Plus includes a 50% discount on the annual plan upon purchase.
- Compatible with combi boilers, this Hive smart thermostat enhances heating control.
- Create up to six daily heating schedules for optimal energy management.
- Automatic Frost Protection feature prevents pipe freezing during cold weather.
- Requires Hive Hub for remote access and mobile app control of heating functions.
#7
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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#8
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- Flexible 5+2 programming for customized heating schedules on weekdays and weekends
- Integrates with the Matter protocol for compatibility across various smart home systems
- Compatible with Apple HomeKit, Amazon Alexa, and Google Home for unified control
- Allows temperature adjustments through voice commands with multiple voice assistants
- Designed for precise control of gas boiler and combi boiler floor heating systems
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- Flexible 5+2 programming for customized heating schedules on weekdays and weekends
- Integrates with the Matter protocol for compatibility across various smart home systems
- Compatible with Apple HomeKit, Amazon Alexa, and Google Home for unified control
- Allows temperature adjustments through voice commands with multiple voice assistants
- Designed for precise control of gas boiler and combi boiler floor heating systems
#9
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
Read More
- 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
Read More
#10
7% Off
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- New Nano 3 Hub offers Wi-Fi connectivity for seamless integration of Hive devices without cables, powered by a dual-core processor for efficient performance in larger networks.
- Included 50% discount on the annual HIVE Plus plan for cost savings.
- Set up to six daily schedules for heating and hot water management.
- Heating and hot water boost option available for up to six hours.
- Features automatic frost protection to prevent frozen pipes.
- Geolocation alerts for heating status when leaving or returning home.
Read More
- New Nano 3 Hub offers Wi-Fi connectivity for seamless integration of Hive devices without cables, powered by a dual-core processor for efficient performance in larger networks.
- Included 50% discount on the annual HIVE Plus plan for cost savings.
- Set up to six daily schedules for heating and hot water management.
- Heating and hot water boost option available for up to six hours.
- Features automatic frost protection to prevent frozen pipes.
- Geolocation alerts for heating status when leaving or returning home.
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