Honeywell Evohome Wi-Fi Connected Thermostat Pack Product Code: 4512H

Sophisticated, wireless heating system can create and individually control up to 12 heating zones in domestic properties. Each zone has separate time and temperature settings. Will also wirelessly control domestic hot water and a mixture of radiator and underfloor heating applications within a system. Radiators can be controlled with Honeywell Evohome Electronic TRV heads (Code 1216H and 5769H). Allows the installation of multiple temperature sensing devices around the property without altering existing pipework, disrupting decor or damaging fixtures and fittings. Remote access is provided via a tablet or smartphone. Suitable for any home with a hydronic (wet) central heating system. Supplied with table-top stand.


  • Compatible with any Boiler & System
  • 4¼" Touchscreen Display
  • Wireless
  • 12-Zone + Hot Water Control
  • Built-In Sensor to Control 1 Zone
  • Built-In Wi-Fi for Remote Access via App
  • Compatible with Radiator & Underfloor Heating Systems
  • Compatible with Radiator & Underfloor Heating Systems


W x D x H: 140 x 23 x 105mm. ErP class VIII (8): 5%.
Additional Information
Technical Specification
  • Brand : Honeywell
  • Product Height : 105 mm
  • Display Type : 4¼" Touchscreen Display
  • Product Type : Wi-Fi Connected Thermostat Pack
  • Zoning Level : Up to Thirty Two
  • Central Heating Control Type : Smart Controls
  • Model Name : Evohome
  • Product Width : 140 mm
  • Model Name/No : Evohome ATP921R3100
  • Product Depth : 23 mm
  • Pack Size : 1
  • Compatible Boiler Type : All Boilers
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Wireless 12-zone thermostat controller, table stand, power cable and BDR wireless relay box.
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

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€289.95 Incl. 23% VAT

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Honeywell Evohome Wi-Fi Connected Thermostat Pack is rated 5.0 out of 5 by 7.
Rated 5 out of 5 by from Multi talented "home" wifi ce A very good item that is excellent straight out of the box, the instructions are awful though........... You tube is your friend.
Date published: 2019-04-12
Rated 5 out of 5 by from The best smart thermostat Had this for 2 years now. The base kit contains controller and wall mounted boiler switch and can do everything a nest or hive will; but whereas that's all a nest can do, this can be expanded to control each room separately. Why does that matter? With a single zone smart thermostat once your living room is warm all the bedroom radiators turn off. Pretty daft, eh? With this, each room can call for heat when you want it to and I don't waste money heating empty bedrooms for 5 hours while I'm sat downstairs. I started with this basic kit then added the TRVs later - can't do that with a Hive. Buy it.
Date published: 2018-09-14
Rated 5 out of 5 by from More control than the others This is a great system. As others have mentioned it is not a nest or a hive, it is much more than that. Whilst Nest and Hive allow you to turn your heating on and off remotely, they do not allow you any control at room level. Evohome lets you control every room in your house and your hot water and it is smart. It monitors how long each zone take to heat up and cool down and factors that in so that your boiler doesn't have to work too hard, but just enough to ensure you are at the perfect temperature when you need it. If you open a window on a cold day, the system compares the rate of cooling to the rooms normal rate and knows you have opened the window, so it stops trying to heat the area like crazy. SImple, but clever and very efficient. Two things to note about the hot water system. Honeywell recommended that I buy a tank with two thermal pockets (for you to put in their sensor provided with their hot water kit and the existing thermacouple)... you do not need it! The Honeywell Thermacouple is all you need to control your hot water system, so a standard megaflow or telford water cylinder is fine and will save you a few pounds. The controller is great to use and best in class for funtionality by a mile. The lithium batteries for the control unit don't last very long, but use it in wall mounted mode and it is perfect. TRV batteries last about 9 months to a year (depending on how busy you keep them) and hot water tank transmitter lasts for two years. Low batt warning for TRVs, but not so for Hot water - so if after 2 years your hot water stops transmitting water temperature you just need 2 AA batteries. System will tell you there's a comms fault, but does not explain that batteries are low like the other control products do. Not a problem as long as you know. Note: if you are using the Honeywell TRVs to control each room you should lock your main boiler actuators open as the TRVs will control the heating demand Great system - I would highly recommend.
Date published: 2018-02-28
Rated 5 out of 5 by from In a class of its own This thermostat is the best In the market. Its very pricey however totally worth the comfort and ease of use. Whenever we go abroad I can control all of my heating zones and even let's me control each individual radiator! Brilliant product. Hopefully the price comes down!
Date published: 2018-02-10
Rated 5 out of 5 by from Great bit of kit Have been running the system for 2 Years in a 3 bed solid wall cottage. Has made a massive difference every room is zoned bar the bathroom (towel rail). The system has saved about 150 to 200L of oil last year, so will take a while to pay for itself but... The house is much warmer as the combi boiler is only heating the needed rooms. Days off / not having time to light the stove this system makes it is easy to just boost the lounge instead of heating the whole house. A great piece of kit which while payback will take some time makes your home much warmer and heating more convenient. Easy enough to install took just over an hour. the controller has no issues connecting to trvs on other side of the house through a 1.2m thick sandstone wall. TRV batteries last about a year. Only criticism is the controller rechargeable batteries are rubbish last at best 20min off mains, need to buy some new ones (replaceable AAs) and see if that improves the battery life. Overall however great bit of kit would recommend!
Date published: 2017-11-21
Rated 5 out of 5 by from Best out there For functionality, this is the best controller available. Only let down by the relatively poor smart phone app. This has proper zone control and should not be compared to the likes of hive or nest. It is a lot more money, but is an entirely granular control. If you have a large house this really comes into its own. I would completely recommend.
Date published: 2016-09-06
Rated 5 out of 5 by from Rolls Royce of Thermostats! If you're willing to spend the money on the ultimate heating system then you need this! It's multizone, can control up to 12 different rooms individually. Forget Nest & Hive which only control the one zone, this bit of kit does it all and will save you a fortune on heating bills. Plus you have full control on your phone from anywhere in the world and has the ability to add hot water tank control also.
Date published: 2016-08-17
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