Vaillant vSMART

Love this product. Linked with Alexa and works perfectly. Easy to install, app easy to use.

This was brought for our Vaillant boiler in our newly purchased Lodge. My husband wanted something to connect so we could regulate the temperature before we go. This arrived quicker than expected and took it up with us. We think it was an old box lying around and just sent off. The batteries were so old they were brown and the display was a joke! Flimsy and for the money was pure crap. Have had to make a journey to the post office to return .

Better than the non-smart Vaillant thermostat this replaced; however not as easy to use as other smart thermostats I have owned previously- sadly my current boiler/cylinder combination could not be controlled by other smart thermostats without major re-wiring. However this is nonetheless a step in the right direction for taking greater control of your heating and hot water.

Excellent. Works well and easy to set up

We opted for one of these, rather than one from Nest. I wish I hadn't. As a thermostat it's ok, but i like to keep an eye on it from my phone and it rarely connects, which was the reason we got it in the first place. If i restart it from the socket then it will be fine for a bit. Not reliable at all.

It looses connection all the time and defaults to heating on! Waking up to a sauna or coming back from a weekend to find you boiler has been on the whole time is horrendous. It rarely lets me make any changes like turn the temp up or down without telling me it can't because something is wrong with my router.... What ever. No overide function.

It works perfectly

Heard great reports about this thermostat but was to be deeply disappointed. My bill went through the roof! It’s not compatible with some internet hubs and it takes on a life of its own. Be careful. Make sure all components are able to communicate with each other or you’ll pay a heavy price.