10 Best Central Heating Programmer And Thermostat in The UK

Last updated on 06/08/2025
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Best Choice
1
9.7
Exceptional
Save 7%
HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1
HONEYWELL
HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1
7% OffFree 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
9.7
Exceptional
Save 7%
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Best Value
2
9.6
Superb
LavaTap Pro Honeywell Wireless Programmable Thermostat CM927 CM921 CM727 Replacement Central Heating Programmer Boiler Plus Compliant, White, Standard
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
9.6
Superb
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3
9.5
Superb
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
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
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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
9.5
Superb
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4
9.4
Superb
Drayton LP522 LP522 5/2 Day Heating and Hot Water Programmer Channel by Drayton
Drayton
Drayton LP522 LP522 5/2 Day Heating and Hot Water Programmer Channel by Drayton
Why We Love It
  • Easy to program.
  • Elegant and modern design.
  • Great energy efficiency.
Main Highlights
  • Drayton LP522 LP522 5/2 Day Heating and Hot Water Programmer Channel
  • White
9.4
Superb
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5
9.4
Superb
Save 5%
Plumbhub-Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
Plumbhub Plumbing and Heating Supplies
Plumbhub-Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
5% OffFree 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.
9.4
Superb
Save 5%
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6
9.2
Superb
Adept-Honeywell Wireless Programmable Thermostat Replacement for CM927 CM921 CM727 CM721 CMS927B1049 with Relay Box Central Heating Programmer - White
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.
  • Direct Binding: Easily binds to existing Honeywell BDR91 Wireless Relay Boxes, eliminating the need for professional installation. Compatible with BDR91 and R8810A OpenTherm Bridge relay boxes.
  • Optimum Start & Stop: This feature ensures energy and cost savings by adjusting the heating to achieve the right temperature at the desired time and turning it off early when the room reaches the set temperature.
  • Modern On-Screen Feedback: The revamped user interface provides real-time feedback, enhancing user interaction.
  • Persistent Memory: Never worry about losing your settings. The built-in memory retains the user program indefinitely, even if the batteries are removed.
  • Box Contents: The box contains an Adept 7 Day Programmable Wireless Room Unit, an Adept Relay box, 2 AA Alkaline Batteries, a Wall Mount, and a Stand Mount.
9.2
Superb
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7
9.0
Superb
Save 5%
Timeguard TRT039N 7 Day Digital Heating Programmer – 4 Channel
Timeguard
Timeguard TRT039N 7 Day Digital Heating Programmer – 4 Channel
5% OffFree Shipping
Why We Love It
  • Independent control for versatility.
  • Stylish design enhances aesthetics.
  • Easy-to-read illuminated display.
Main Highlights
  • 4 independently timed channels – hot water and 3 separate heating zones.
  • Suitable for fully pumped systems.
  • Stylish design with pull down flap for programming.
  • 3 different time periods (5 day plus 2 or 7 day).
  • Easy view 12 hour am/pm or 24 hour clock/timer display illuminated on setting.
9.0
Superb
Save 5%
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8
8.9
Excellent
Nassboards Smart Thermostat - for Electric Underfloor Heating, Remote & WiFi Control, Programmable, Digital & Compatible with WiFi, Alexa - Installation Kit Included
Nassboards
Nassboards Smart Thermostat - for Electric Underfloor Heating, Remote & WiFi Control, Programmable, Digital & Compatible with WiFi, Alexa - Installation Kit Included
Why We Love It
  • Easy-to-use multifunctional features.
  • Remote control via app.
  • Sleek, modern design options.
Main Highlights
  • MULTIFUNCTIONAL AND EASY TO USE : Despite its multiple functions, this Smart Thermostat, brought to you by Nassboards, is simple to use. Whether controlling it wirelessly or via its colour touch screen, this smart thermostat can regulate most heating and cooling systems. Brought to you by Nassboards, the additional features of this Smart Thermostat include hot water control, humidity sensors, personalised timer schedules and energy consumption statistics
  • ELEGANT, PRACTICAL DESIGN: Your Smart Thermostat delivered by Nassboards has a sleek and contemporary look. Choose between a black or white design so it can blend into your home interior
  • WIFI, WIRELESS CONTROL: Want to arrive home to a cosy, warm house on a winter’s day? Thanks to this Smart Thermostat you can control your cooling or heating system remotely from anywhere on any Apple or Android smartphone or tablet with the Thermostat’s Mobile App. What’s more, this Nassboards delivered Smart Thermostat is compatible with most smart boxes such as Amazon Alexa meaning that you can control your heating or cooling system without having to even walk to the thermostat controls box
  • INSTALLATION KIT INCLUDED: Upon purchasing, this Smart Thermostat is ready whenever you are as it comes with a Nassboards Installation Kit comprising of a screwdriver and floor probe
  • 100% SATISFACTION GUARANTEED: We at Nassboards are as passionate as we are confident about the quality of this Smart Thermostat. We take a lot of care to ensure that we leave you a satisfied customer every step of the way. If at any point you are not happy with our product, contact us so that we can make it right
8.9
Excellent
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9
8.8
Excellent
Save 25%
LavaTap Pro Honeywell Wired Programmable Thermostat CM907 CM901 CM707 CM701 Replacement Central Heating 7 Day Programmer Boiler Plus Compliant
LavaTap
LavaTap Pro Honeywell Wired Programmable Thermostat CM907 CM901 CM707 CM701 Replacement Central Heating 7 Day Programmer Boiler Plus Compliant
25% OffFree Shipping
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
8.8
Excellent
Save 25%
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10
8.7
Excellent
Save 43%
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
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
43% OffFree 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.
8.7
Excellent
Save 43%
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