Tado BU01 Thermostat Extension Kit Product Code: 7484H

Recommended for heating systems without a room thermostat. Connects Tado smart thermostat to a boiler where there is no thermostat cable from boiler to living room. Extension kit is required for the replacement of hot water controlling programmers (UK only). Compatible with UK standard backplate. Controls heating based on the sensor data from Tado smart thermostat. Typically installed next to a boiler or as a replacement for an existing external controller.


  • Compatible with UK Standard Backplate


Compatible with UK standard backplate. Hot water kit is required for the replacement of hot water controlling programmers (UK only).
Additional Information
Technical Specification
  • Brand : Tado
  • Product Height : 72 mm
  • Product Length : 212 mm
  • Product Type : Extension Kit for Smart Thermostat
  • Central Heating Control Type : Smart Controls
  • Product Width : 163 mm
  • Model Name/No : BU01
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
BU01, extension box, connection cable, 2 x connection plugs, terminal block, mounting screws and cable labels.
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€94.95 Incl. 23% VAT

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Tado BU01 Thermostat Extension Kit is rated 3.7 out of 5 by 3.
Rated 5 out of 5 by from Best on the market Other solutions over complicated things whereas the Tado offering provided me with the ability to control each and every room and a clean and simple product. Installation was really simple. The instructions were detailed and easy to follow. Oct 2018. I’ve installed a room thermostat in place of the existing heating one in the typical inside the front door coldest part of the house and as part of the kit that provides the Internet bridge. That zone is set always to 15 degrees and doesn’t need to be warm. An extension kit which controls the water, just clips onto the existing base most UK heating timers use. Super simple. Only issue I had is the bezel of the tado box is thicker so I had to move the base further out from the heating relay box. And lastly radiator valves, 13 of them. The various adapters for me were a poor fit, but reading earlier reviews I knew this was a likely weak spot. So I have opted to replace with new TRV valves without the heads so they are the correct size for the Tado valves. Some of the radiators were Drayton valves already and these fitted well and if you’re lucky enough to have these by default your install will be super simple. If you attempt to use the adapters (I suspect some will work better than others) they do work but on one or two radiators before I fitted the new TRV valves I wasn’t overly confident the thread was that strong. Once done and ignoring my decision to replace the valve bodies the system was setup and running within an hour. I’ve tested failures such as no internet. You can manually and locally override things via the thermostat to control hot water and heating but also on each radiator. I’ve not tested shutting the internet off to see if the schedule continues to run but will do in the near future. Whole lot has been running since October, rooms that don’t need heat are cold and the rest of the system heats up faster. The boiler has slowed down far faster first thing in the morning and has got every room that needs heat nice and toasty far faster thanks to excluding radiators and rooms which are not used in the morning. Well support on both Android and Apple iOS which for me placed Tado ahead of the competition. I have also put their AC unit in to control my office. If you have a member of the family who rarely uses their iPhone you will find the app stops reporting its location after a period of time. You just have to open the Tado app. When this happens tado defaults to you being away from home and if set to the heating shuts down. Leaving me with an angry call to say the heating has stopped working to which I respond open the tado app on your phone. This has happened twice and I suspect after 6 weeks without opening the app. This is an Apple feature as WhatsApp does the same.
Date published: 2019-02-10
Rated 5 out of 5 by from Very Impressed I purchased Tado after speaking with their sales team and confirming how the set up would worth with my existing heating installation. I have an S Plus Plan Heating System - hot water and two central heating zones. I ordered the Smart Room Thermostat V3 Starter Kit with an additional Smart Room Thermostat for the second zone and an Extension Kit. As I wanted the greater control over my heating I also opted to purchase a Smart Radiator Thermostat for each room, totalling 17 thermostats. After reading Tado FAQ’s I opted to do the install myself. When first registered my devices I had to wait a couple of days for my custom installation instructions to come through, this took 2 working days as they advise. It took me no more than 10 minutes to remove and replace each of my old wired thermostats with the Tado room thermostats wired in place. The extension kit directly replaced my old controller using the existing backplate so this was even easier. I then set to installing the Smart Radiator Thermostats which again were really simple and took no more than 5 minutes each to install. Each device can have its own schedule and temperature set so that you have individual room control. They do come with preset schedules and temperatures so you’re adusting these to suit. Given the number of devices I installed this took a little time to do, though no more than an hour with a cup of coffee. I had a couple of minor teething issues with the setup which related to the configurations Tado has to do pre installation for the multi zone system I have. I liaised with Tado both via email and on the telephone and they were very responsive, the first issue they resolved whilst I was on the phone to them and the second within an hour of me speaking to them. While the system has only been in a couple of days, I am already really impressed. The system is easy to install and setup, my experience with customer support has been excellent and the minor issues resolve promptly.
Date published: 2019-01-05
Rated 1 out of 5 by from Don’t buy It’s practically impossible to install without waiting for Tado customer support confirming your configuration. Problem is they don’t respond so you’re basically stuck. Also, all control traffic seems to go through their servers so if they have problems you have no heat.
Date published: 2018-11-22
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