Honeywell T4R Wireless Programmable Thermostat and Receiver Y4H910RF4003
- SKU
- EDDHONEYWELL06
The Honeywell Home T4 is designed to deliver automatic time and temperature control for domestic heating systems. Compatible with 24V to 230V on/off appliances (including gas boilers, combi boilers and zone valves (it offers broad system flexibility. It can also function as the temperature‑sensing component within S Plan or Y Plan configurations, making it a versatile choice for modern heating setups.
Our Expert's Opinion
"The T4R is the preferred choice for heating professionals!"Honeywell T4R Wireless Programmable Thermostat and Receiver Y4H910RF4003
The T4 programmable thermostat is a modern wired 7 day controller designed to deliver automatic time and temperature management for domestic heating systems in homes or light commercial settings. Smart, simple and efficient, the T4 range supports energy savings through its pre programmed schedule and offers a smooth installation experience thanks to its standardised mounting design.
The thermostat provides flexible scheduling options, allowing users to choose between 7 day or 5/2 day programming, with a ready made schedule included for quick setup. It can run four or six independent time periods per day and is fully compatible with 24-230V on/off and OpenTherm appliances, including gas boilers, combi boilers and heat pumps. A clear on screen text display, combined with intuitive function buttons, ensures straightforward programming for all users.
The T4 also incorporates intelligent features such as optimum start, optimum stop and delayed start, learning how the room heats to deliver comfort efficiently. Installation is designed to be fast and simple, following a three step process (wire, power up and test, then configure) supported by an improved wall plate with extra wiring space. An on screen heat demand icon makes commissioning easy, while configuration menus are accessed through simple push button navigation.
Additional conveniences include adjustable frost protection, an Away mode with a user defined temperature and duration, temporary overrides for one or two hours or until the next scheduled set point, and a continuously displayed large format clock. Automatic summer/winter time change, an easy access batter compartment and an optional extended backlight further enhance everyday usability.
The T4 series combines modern design, intelligent control and installer friendly features to deliver reliable, energy efficient comfort throughout the year.
| MPN | Y4H910RF4003 |
|---|---|
| Product Code | Y4H910RF4003 |
| Part Origin | Genuine |
| Part or Accessory? | Accessory |
| Brand | Honeywell |
| Height (mm) | 95 |
| Width (mm) | 135 |
| Depth (mm) | 26 |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
Honeywell T4R Wireless Programmable Thermostat and Receiver Y4H910RF4003
The T4 programmable thermostat is a modern wired 7 day controller designed to deliver automatic time and temperature management for domestic heating systems in homes or light commercial settings. Smart, simple and efficient, the T4 range supports energy savings through its pre programmed schedule and offers a smooth installation experience thanks to its standardised mounting design.
The thermostat provides flexible scheduling options, allowing users to choose between 7 day or 5/2 day programming, with a ready made schedule included for quick setup. It can run four or six independent time periods per day and is fully compatible with 24-230V on/off and OpenTherm appliances, including gas boilers, combi boilers and heat pumps. A clear on screen text display, combined with intuitive function buttons, ensures straightforward programming for all users.
The T4 also incorporates intelligent features such as optimum start, optimum stop and delayed start, learning how the room heats to deliver comfort efficiently. Installation is designed to be fast and simple, following a three step process (wire, power up and test, then configure) supported by an improved wall plate with extra wiring space. An on screen heat demand icon makes commissioning easy, while configuration menus are accessed through simple push button navigation.
Additional conveniences include adjustable frost protection, an Away mode with a user defined temperature and duration, temporary overrides for one or two hours or until the next scheduled set point, and a continuously displayed large format clock. Automatic summer/winter time change, an easy access batter compartment and an optional extended backlight further enhance everyday usability.
The T4 series combines modern design, intelligent control and installer friendly features to deliver reliable, energy efficient comfort throughout the year.
| MPN | Y4H910RF4003 |
|---|---|
| Product Code | Y4H910RF4003 |
| Part Origin | Genuine |
| Part or Accessory? | Accessory |
| Brand | Honeywell |
| Height (mm) | 95 |
| Width (mm) | 135 |
| Depth (mm) | 26 |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
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