In a nutshell, turning off the heating to a room does not affect the power output of radiators in adjoining rooms. This six-pack of smart radiator valves is voice-controlled (through Alexa and Google Assistant), as well as remotely through the app on your smartphone. If you put the room stat in a room with no smart TRV it is controlling the heating in all the rooms without a smart TRV. As Dan at Drayton pointed out to me, even Opentherm has its disadvantages as by operating the boiler at lower power it’s going to take longer to get up to temp albeit when it’s there, it will maintain a much more consistent temperature . I want to control the heating of upstairs bedrooms independently of downstairs, and so when I saw the Drayton Wiser Smart TRV I thought I had found a solution and bought a bunch of them.

Out of interest, for others in the home that want to control the system on their phone, do you give them your login details and they log in to the app that way, or should they register as being 'not the home owner'? Some might say they lack a temperature reading on them, which again, would be good for people who don’t have access to the app, and my YouTube subscriber suzamar270 loves the fact that their Tado thermostat measures temperature and humidity, although quite how accurate humidity is with the sensor so close to the radiator I don’t know. Jon Giles got me excited by pointing out there’s a Nefit Opentherm adaptor he was hoping to be able to fit to his Worcester Bosch boiler, but sadly my 10+ year old Greenstar Camray isn’t compatible with Opentherm - and even if it was, I’d need to change my plumbing and fit an integral diverter valve kit to adapt my Splan system to the EMS/Opentherm system. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH).Also, a wall stat is more convenient to do a quick temp change in a main area without having to get your phone out. Have been setting up my home CH/HW Drayton Wiser system, oil fired boiler, 9 radiator smart stat's, Hub and 1 wireless stat associated with one particular area to compliment radiator stat. To get you started, Wiser – which makes the Drayton range of smart radiator valves – recommends you get its Multizone Kit 1.

Our radiator thermostat works seamlessly with most existing thermostatic radiator valves (TRVs) in your home.

Winning a 2018 Red Dot Award Design award, the smart radiator thermostats provide accurate multi-zone heating control. Now Bram raised a really good point - about the danger of being tied into paid services (which is why he didn’t go with Tado) or just your system being rendered obsolete by the manufacturer going bust. If I do choose not to put a smart thermostat on all the radiators, would it be worth having a standard TRV on those ones or best with nothing? In most cases you save more energy by not using the heating in a room than by just dropping the temperature by a degree or two. However, if you already have a smart thermostat, then you probably already have one of these installed.