Best Central Heating Programmer And Thermostat of 2025

Last updated on 07/11/2025
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1
LavaTap Pro Honeywell Wireless Programmable Thermostat CM927 CM921 CM727 Replacement Central Heating Programmer Boiler Plus Compliant, White, Standard
LavaTap Pro Honeywell Wireless Programmable Thermostat CM927 CM921 CM727 Replacement Central Heating Programmer Boiler Plus Compliant, White, Standard
LavaTap
Free Shipping
Why we love it
  • Seamless replacement for various models.
  • Maintains program after battery removal.
  • Features intelligent heating control.
Main Highlights
  • Made and supported by Honeywell (Resideo)
  • Easy replacement for Honeywell CM927 CM921 CM727 CMS727 CMT727 CMS921 CMS927
  • Pre-bound for wireless communication or can be bound to Honeywell BDR91 relay box - Video instructions included via QR code
  • Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver
  • Built-in memory retains user program – even following battery removal
  • 7 day programmer / 4 time schedules per day / Intelligent heating control / Boiler Plus compliant to meet current Part L building regulations
  • Comes with wireless programmable thermostat, relay box, table stand, AA batteries and instructions
  • Mounting type: Wall Mount
  • Item shape: Rectangular
  • Control type: Button Control
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9.7
Exceptional
9.7
Exceptional
LavaTap
LavaTap Pro Honeywell Wireless Programmable Thermostat CM927 CM921 CM727 Replacement Central Heating Programmer Boiler Plus Compliant, White, Standard
Free Shipping
Why we love it
  • Seamless replacement for various models.
  • Maintains program after battery removal.
  • Features intelligent heating control.
Main Highlights
  • Made and supported by Honeywell (Resideo)
  • Easy replacement for Honeywell CM927 CM921 CM727 CMS727 CMT727 CMS921 CMS927
  • Pre-bound for wireless communication or can be bound to Honeywell BDR91 relay box - Video instructions included via QR code
  • Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver
  • Built-in memory retains user program – even following battery removal
  • 7 day programmer / 4 time schedules per day / Intelligent heating control / Boiler Plus compliant to meet current Part L building regulations
  • Comes with wireless programmable thermostat, relay box, table stand, AA batteries and instructions
  • Mounting type: Wall Mount
  • Item shape: Rectangular
  • Control type: Button Control
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Value for Money
2
HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1
HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1
Honeywell
Free Shipping
Why we love it
  • Effortless time adjustment.
  • Sleek, large display.
  • Smart LoT integration.
Main Highlights
  • Now with LoT Technology
  • Our Largest ever Backlight Display
  • Factory set Clock
  • Automatic Summer/Winter time change
  • 7 Day or 5/2 Day operation
  • Product may comes in white box or plastic package
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9.6
Superb
9.6
Superb
Honeywell
HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1
Free Shipping
Why we love it
  • Effortless time adjustment.
  • Sleek, large display.
  • Smart LoT integration.
Main Highlights
  • Now with LoT Technology
  • Our Largest ever Backlight Display
  • Factory set Clock
  • Automatic Summer/Winter time change
  • 7 Day or 5/2 Day operation
  • Product may comes in white box or plastic package
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3
Adept-Honeywell Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Adept-Honeywell Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Adept Technology
Why we love it
  • Offers seamless thermostat transition.
  • Enhanced user-friendly interface.
  • Promotes energy and cost savings.
Main Highlights
  • The Adept Wireless Programmable Thermostat, a state-of-the-art replacement unit for the Honeywell CM927, CMS927, and CMS927B1049 Wireless Room Thermostats. Designed with the latest technology, this thermostat offers a seamless transition from your existing Honeywell CM Series Wireless Thermostats, ensuring consistent temperature regulation and enhanced user experience.
  • 7-Day Programmability: Customize your heating schedule for every day of the week, ensuring optimal comfort and energy efficiency.
  • Compatibility: Directly replaces a range of Honeywell CM Series products, including CM921, CMS921, CMS921B1042, CM927, CMS927, CMS927B1049, CM727, CMS727, CMS727E1016, and CM721.
  • Advanced RF Protocol: Utilizes the 868MHz 'Ramses 2' RF protocol for reliable communication and performance.
  • User-Friendly Interface: While it mirrors the user display menu of Honeywell Home's T3 Series Thermostat, it offers unique features like the absence of the +1hr function and flame icon during heating demand.
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9.5
Superb
9.5
Superb
Adept Technology
Adept-Honeywell Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Why we love it
  • Offers seamless thermostat transition.
  • Enhanced user-friendly interface.
  • Promotes energy and cost savings.
Main Highlights
  • The Adept Wireless Programmable Thermostat, a state-of-the-art replacement unit for the Honeywell CM927, CMS927, and CMS927B1049 Wireless Room Thermostats. Designed with the latest technology, this thermostat offers a seamless transition from your existing Honeywell CM Series Wireless Thermostats, ensuring consistent temperature regulation and enhanced user experience.
  • 7-Day Programmability: Customize your heating schedule for every day of the week, ensuring optimal comfort and energy efficiency.
  • Compatibility: Directly replaces a range of Honeywell CM Series products, including CM921, CMS921, CMS921B1042, CM927, CMS927, CMS927B1049, CM727, CMS727, CMS727E1016, and CM721.
  • Advanced RF Protocol: Utilizes the 868MHz 'Ramses 2' RF protocol for reliable communication and performance.
  • User-Friendly Interface: While it mirrors the user display menu of Honeywell Home's T3 Series Thermostat, it offers unique features like the absence of the +1hr function and flame icon during heating demand.
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4
Plumbhub-Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Plumbhub-Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Plumbhub Plumbing and Heating Supplies
Free Shipping
Why we love it
  • Programmable for energy savings.
  • Easy and intuitive controls.
  • Accurate whole-home temperature.
Main Highlights
  • Programmable Thermostat: This digital thermostat allows you to set your desired temperature and schedule for optimal comfort and energy savings.
  • Easy Operation: The intuitive controls and clear display make it simple to adjust the temperature or program settings.
  • Wireless Remote Sensor: The included wireless sensor detects the temperature in another room for more accurate whole-home heating or cooling.
  • Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver
  • Energy Efficient: By programming the thermostat to your schedule, you can reduce energy consumption and lower utility bills.
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9.4
Superb
9.4
Superb
Plumbhub Plumbing and Heating Supplies
Plumbhub-Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Free Shipping
Why we love it
  • Programmable for energy savings.
  • Easy and intuitive controls.
  • Accurate whole-home temperature.
Main Highlights
  • Programmable Thermostat: This digital thermostat allows you to set your desired temperature and schedule for optimal comfort and energy savings.
  • Easy Operation: The intuitive controls and clear display make it simple to adjust the temperature or program settings.
  • Wireless Remote Sensor: The included wireless sensor detects the temperature in another room for more accurate whole-home heating or cooling.
  • Replacement unit for the older versions of CM721 CMS721 CM727 CMS727 CMS727E1016 CM927 CM921 CMS927 CMS927B1049 Wireless Room Thermostat & Receiver
  • Energy Efficient: By programming the thermostat to your schedule, you can reduce energy consumption and lower utility bills.
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5
Drayton 123070 LP522 (Mk4) 2 Channel Programmer, White
Drayton 123070 LP522 (Mk4) 2 Channel Programmer, White
Drayton
Free Shipping
Why we love it
  • Effortless seasonal time adjustments.
  • Clear, backlit display screen.
  • Flexible switching options provided.
Main Highlights
  • Automatic summer/winter time change
  • Easy to read, backlit screen
  • On/once/timed/off switching options
  • Programme advance buttons, with LCD indication
  • Boost, giving 1, 2 or 3 hours with LCD Indication
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9.4
Superb
9.4
Superb
Drayton
Drayton 123070 LP522 (Mk4) 2 Channel Programmer, White
Free Shipping
Why we love it
  • Effortless seasonal time adjustments.
  • Clear, backlit display screen.
  • Flexible switching options provided.
Main Highlights
  • Automatic summer/winter time change
  • Easy to read, backlit screen
  • On/once/timed/off switching options
  • Programme advance buttons, with LCD indication
  • Boost, giving 1, 2 or 3 hours with LCD Indication
Show More
6
ENGO E901RF Wireless Thermostat 7 Day Programmable Central Heating Controller Gas Oil Combi Boiler Thermostat Heat Pump 5 Year Warranty
ENGO E901RF Wireless Thermostat 7 Day Programmable Central Heating Controller Gas Oil Combi Boiler Thermostat Heat Pump 5 Year Warranty
ENGO
Free Shipping
Why we love it
  • Reliable wireless connectivity everywhere.
  • Compatible with various systems.
  • Customizable 7-day programming.
Main Highlights
  • Comprehensive Wireless Thermostat: With up to 100m wireless range in open space, the ENGO E901-RF provides reliable connection to your boiler, allowing flexible placement options throughout the home. This wireless boiler control thermostat ensures stable performance across any space
  • Full Compatibility with Modern Heating Systems: Designed for versatile use, this thermostat works with a range of systems, including combi boilers, gas boilers, oil boilers, and heat pumps. Whether it’s used as a heating thermostat or wireless room thermostat, it offers dependable, efficient control
  • 7-Day Customisable Programming: The ENGO E901-RF provides 7-day programmable schedules with up to six adjustable time and temperature points per day. This customization allows you to set precise heating schedules to meet daily routines, enhancing comfort while minimizing energy waste
  • Boiler Plus Compliant: Fully compliant with Boiler Plus regulations, this thermostat helps ensure that your heating system runs more efficiently with its self learning fuzzy logic algorithm, meeting the latest energy-saving standards and contributing to a more sustainable home environment
  • Enhanced Comfort and Efficiency: With its central heating control capabilities, the ENGO E901-RF makes it easy to adjust heating for every room, optimising comfort without heating unused spaces, lowering energy bills, and promoting a cozy environment across your home
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9.2
Superb
9.2
Superb
ENGO
ENGO E901RF Wireless Thermostat 7 Day Programmable Central Heating Controller Gas Oil Combi Boiler Thermostat Heat Pump 5 Year Warranty
Free Shipping
Why we love it
  • Reliable wireless connectivity everywhere.
  • Compatible with various systems.
  • Customizable 7-day programming.
Main Highlights
  • Comprehensive Wireless Thermostat: With up to 100m wireless range in open space, the ENGO E901-RF provides reliable connection to your boiler, allowing flexible placement options throughout the home. This wireless boiler control thermostat ensures stable performance across any space
  • Full Compatibility with Modern Heating Systems: Designed for versatile use, this thermostat works with a range of systems, including combi boilers, gas boilers, oil boilers, and heat pumps. Whether it’s used as a heating thermostat or wireless room thermostat, it offers dependable, efficient control
  • 7-Day Customisable Programming: The ENGO E901-RF provides 7-day programmable schedules with up to six adjustable time and temperature points per day. This customization allows you to set precise heating schedules to meet daily routines, enhancing comfort while minimizing energy waste
  • Boiler Plus Compliant: Fully compliant with Boiler Plus regulations, this thermostat helps ensure that your heating system runs more efficiently with its self learning fuzzy logic algorithm, meeting the latest energy-saving standards and contributing to a more sustainable home environment
  • Enhanced Comfort and Efficiency: With its central heating control capabilities, the ENGO E901-RF makes it easy to adjust heating for every room, optimising comfort without heating unused spaces, lowering energy bills, and promoting a cozy environment across your home
Show More
7
LavaTap Pro Honeywell Wired Programmable Thermostat CM907 CM901 CM707 CM701 Replacement Central Heating 7 Day Programmer Boiler Plus Compliant
LavaTap Pro Honeywell Wired Programmable Thermostat CM907 CM901 CM707 CM701 Replacement Central Heating 7 Day Programmer Boiler Plus Compliant
LavaTap
Why we love it
  • Simple replacement for Honeywell thermostats.
  • Powered by AA batteries.
  • Dedicated Honeywell technical support.
Main Highlights
  • Easy replacement for Honeywell CM907 CM901 CM707 CM701 Thermostats
  • Hardwired to boiler and powered by 2 x AA batteries
  • Made and supported by Honeywell (Resideo) with dedicated technical support number
  • Uses Honeywell ABC wiring terminal labelling for simple replacement
  • 7 day programmer / 4 time schedules per day / Intelligent heating control / Boiler Plus compliant to meet current Part L building regulations
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9.0
Superb
9.0
Superb
LavaTap
LavaTap Pro Honeywell Wired Programmable Thermostat CM907 CM901 CM707 CM701 Replacement Central Heating 7 Day Programmer Boiler Plus Compliant
Why we love it
  • Simple replacement for Honeywell thermostats.
  • Powered by AA batteries.
  • Dedicated Honeywell technical support.
Main Highlights
  • Easy replacement for Honeywell CM907 CM901 CM707 CM701 Thermostats
  • Hardwired to boiler and powered by 2 x AA batteries
  • Made and supported by Honeywell (Resideo) with dedicated technical support number
  • Uses Honeywell ABC wiring terminal labelling for simple replacement
  • 7 day programmer / 4 time schedules per day / Intelligent heating control / Boiler Plus compliant to meet current Part L building regulations
Show More
8
Center RF Wireless 7-Day 5/2 Day Programmable Room Thermostat White - Boiler Plus Compliant - Minimalistic and Modern design - Battery powered
Center RF Wireless 7-Day 5/2 Day Programmable Room Thermostat White - Boiler Plus Compliant - Minimalistic and Modern design - Battery powered
CENTER
Why we love it
  • Minimalistic and modern design.
  • Ultimate installation flexibility included.
  • Maximises energy savings effortlessly.
Main Highlights
  • Minimalistic and modern design - discreetly blends-in to any type of home.Boiler Plus Compliant.Adaptive control function – accurately and efficiently helps maintain the required temperature setting.Optimum start & stop technology – drastically increases the efficiency of your heating system.Factory pre-bound to the RF receiver unit – allows for simple, fuss-free installation
  • Wall-mounting backplate and table stand included allows for the ultimate installation flexibility.Large back-lit LCD display with time and temperature makes it easy to read current and desired temperature setting.Simple and ergonomic user interface with only 5 buttons – makes it very easy to use and setup heating programmes
  • 7-day & 5/2 day heating program to match your lifestyle, whilst maximising energy savings.Choice of up to 4 independent temperature periods per day with a copy function
  • Battery powered (with low-power indicator).'Active’/‘In use’ confirmation makes it easy to identify if the heating is on or off
  • 24-hr and 12-hr clock display format option.Built-in memory holds the user program indefinitely. ErP: Class IV (+2%), (EU) 811/2013
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8.9
Excellent
8.9
Excellent
CENTER
Center RF Wireless 7-Day 5/2 Day Programmable Room Thermostat White - Boiler Plus Compliant - Minimalistic and Modern design - Battery powered
Why we love it
  • Minimalistic and modern design.
  • Ultimate installation flexibility included.
  • Maximises energy savings effortlessly.
Main Highlights
  • Minimalistic and modern design - discreetly blends-in to any type of home.Boiler Plus Compliant.Adaptive control function – accurately and efficiently helps maintain the required temperature setting.Optimum start & stop technology – drastically increases the efficiency of your heating system.Factory pre-bound to the RF receiver unit – allows for simple, fuss-free installation
  • Wall-mounting backplate and table stand included allows for the ultimate installation flexibility.Large back-lit LCD display with time and temperature makes it easy to read current and desired temperature setting.Simple and ergonomic user interface with only 5 buttons – makes it very easy to use and setup heating programmes
  • 7-day & 5/2 day heating program to match your lifestyle, whilst maximising energy savings.Choice of up to 4 independent temperature periods per day with a copy function
  • Battery powered (with low-power indicator).'Active’/‘In use’ confirmation makes it easy to identify if the heating is on or off
  • 24-hr and 12-hr clock display format option.Built-in memory holds the user program indefinitely. ErP: Class IV (+2%), (EU) 811/2013
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9
LavaTap Pro Controls 7 Day 2 Channel Heating Programmer Direct Replacement for Honeywell ST9400C Heating Hot Water Control Compatible with Honeywell ST699 ST799 ST7100, White
LavaTap Pro Controls 7 Day 2 Channel Heating Programmer Direct Replacement for Honeywell ST9400C Heating Hot Water Control Compatible with Honeywell ST699 ST799 ST7100, White
LavaTap
Free Shipping
Why we love it
  • Easy installation and replacement.
  • Flexible programming options available.
  • Reliable Honeywell support provided.
Main Highlights
  • Direct replacement for Honeywell ST9400C without changing cables simply clip onto the ST9400C back plate
  • Can also replace Honeywell ST699 ST799 ST7100 ST6200 ST6300 ST6400 with easy wiring change on the back panel
  • 7 day 2 channel programmer for heating and hot water with 3 on/off periods per day
  • Manufactured and supported by Honeywell direct phone technical support
  • Factory pre-programmed scheduling options with 3 independent heating and hot water periods per day and 7 days of programming including holiday, party and boost mode
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8.8
Excellent
8.8
Excellent
LavaTap
LavaTap Pro Controls 7 Day 2 Channel Heating Programmer Direct Replacement for Honeywell ST9400C Heating Hot Water Control Compatible with Honeywell ST699 ST799 ST7100, White
Free Shipping
Why we love it
  • Easy installation and replacement.
  • Flexible programming options available.
  • Reliable Honeywell support provided.
Main Highlights
  • Direct replacement for Honeywell ST9400C without changing cables simply clip onto the ST9400C back plate
  • Can also replace Honeywell ST699 ST799 ST7100 ST6200 ST6300 ST6400 with easy wiring change on the back panel
  • 7 day 2 channel programmer for heating and hot water with 3 on/off periods per day
  • Manufactured and supported by Honeywell direct phone technical support
  • Factory pre-programmed scheduling options with 3 independent heating and hot water periods per day and 7 days of programming including holiday, party and boost mode
Show More
10
Smart Thermostat for Combi Boiler/Water Underfloor Heating, WiFi Thermostat Works with Apple HomeKit Siri, Alexa, Google Home, Support Programmer No Hub Required - White - Pack of 1- 240 V
Smart Thermostat for Combi Boiler/Water Underfloor Heating, WiFi Thermostat Works with Apple HomeKit Siri, Alexa, Google Home, Support Programmer No Hub Required - White - Pack of 1- 240 V
Refoss
Free Shipping
Why we love it
  • Saves energy with automated heating.
  • Precise temperature sensing.
  • Easy remote control operation.
Main Highlights
  • ☀【Smart Thermostat Control】The WiFi heating thermostat is compatible with most boiler/water underfloor heating systems. Note: Smart Thermostats only work with two-wire systems! You can control the heating remotely using the free app “Refoss” or voice control, which is compatible with Apple HomeKit Siri, Amazon Alexa (Echo, Echo Dot), Google Home, or manual touchscreen control. Only 2.4GHz WiFi is supported, and no Hub is required.
  • ☀【Open Window Detection Function】Save energy and reduce electricity bills! When a window is detected as open, the smart thermostat will automatically shut down for 30 minutes to avoid energy waste. The app will also send you notifications to remind you when the window is open.
  • ☀【Dual Temperature Sensor】To accurately sense the room temperature for maximum home comfort, we utilize an internal sensor to detect air temperature and an external sensor wire to measure the floor temperature as needed (installing the external sensor wire is necessary for external sensing). You can switch between the sensors based on different scenarios to better control the heat while preventing overheating. Temperature control range: 5-35°C; Measurement temperature accuracy: 0.1°C.
  • ☀【Schedule and Multi-room Control】You can add and delete scheduling functions, supporting up to 8 events per day. The thermostat allows for a 24/7 schedule for different rooms. Multiple Alexa thermostats can be used to control different rooms. The heating system turns on and adjusts the temperature automatically when you’re at home and turns off automatically when you go out, based on the schedule you set.
  • ❄【Add Summer Mode Function】 The summer mode function can be utilized for cooling during the summer and necessitates a cooling-compatible system, such as an air-to-air heat pump system. Please note that certain features mentioned require the latest version of the app. Ensure that you update both your app and firmware. The iOS version has already been released, and the Android version will be available soon.
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8.7
Excellent
8.7
Excellent
Refoss
Smart Thermostat for Combi Boiler/Water Underfloor Heating, WiFi Thermostat Works with Apple HomeKit Siri, Alexa, Google Home, Support Programmer No Hub Required - White - Pack of 1- 240 V
Free Shipping
Why we love it
  • Saves energy with automated heating.
  • Precise temperature sensing.
  • Easy remote control operation.
Main Highlights
  • ☀【Smart Thermostat Control】The WiFi heating thermostat is compatible with most boiler/water underfloor heating systems. Note: Smart Thermostats only work with two-wire systems! You can control the heating remotely using the free app “Refoss” or voice control, which is compatible with Apple HomeKit Siri, Amazon Alexa (Echo, Echo Dot), Google Home, or manual touchscreen control. Only 2.4GHz WiFi is supported, and no Hub is required.
  • ☀【Open Window Detection Function】Save energy and reduce electricity bills! When a window is detected as open, the smart thermostat will automatically shut down for 30 minutes to avoid energy waste. The app will also send you notifications to remind you when the window is open.
  • ☀【Dual Temperature Sensor】To accurately sense the room temperature for maximum home comfort, we utilize an internal sensor to detect air temperature and an external sensor wire to measure the floor temperature as needed (installing the external sensor wire is necessary for external sensing). You can switch between the sensors based on different scenarios to better control the heat while preventing overheating. Temperature control range: 5-35°C; Measurement temperature accuracy: 0.1°C.
  • ☀【Schedule and Multi-room Control】You can add and delete scheduling functions, supporting up to 8 events per day. The thermostat allows for a 24/7 schedule for different rooms. Multiple Alexa thermostats can be used to control different rooms. The heating system turns on and adjusts the temperature automatically when you’re at home and turns off automatically when you go out, based on the schedule you set.
  • ❄【Add Summer Mode Function】 The summer mode function can be utilized for cooling during the summer and necessitates a cooling-compatible system, such as an air-to-air heat pump system. Please note that certain features mentioned require the latest version of the app. Ensure that you update both your app and firmware. The iOS version has already been released, and the Android version will be available soon.
Show More