Unfortunately, this deal has expired 17 October 2022.
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24 Posted 16 October 2022
Drayton Wiser Smart Radiator Thermostat - £36 @ Amazon
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neenyrules
Joined in 2007
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Edited by a community support team member, 16 October 2022
24 Comments
sorted byHowever, if they are for rads that don't currently have a manual TRV on, that's a lot more time consuming as you will need to drain the system to fit them and also buy extra parts to fit it. I had to do this as a couple of my rads didn't have manual TRVs on. If your rads fall into this category, I doubt it would be included in the installation of the thermostat. (edited)
I think I change batteries once a year.
I should add, you do need the hub. In case anyone was unclear. (edited)
I've tested the temperature readings on a room thermometer and the actual Drayton TRV and it's not much different. On average the readings were 0.2 degrees off on the TRV from the actual room temperature on a room thermometer.
Would I be saving any energy by running boiler compared to an electric heater for that room?
Thanks
If you have the Smart TRV on just 2 radiators, the boiler would still be pumping hot water through all the other radiators, and only turn off when the two Smart TRVs have reached their desired temperature.
Central heating is cheaper than a electric heater, but the initial outlay for these Smart TRVs is expensive, so it's a long term benefit.
We don't have Smart TRVs, but I do want to get some for all the radiators in the future - hopefully once the prices come down.