A spokesperson said: "Turning the thermostat up higher does not make your home warm up any quicker." Really?

[ericmark]

I found turning the thermostat (TRV) to 20°C at 7 am, would not get the room to 20°C until around 10:30 am, but set it to 22°C at 7 am then 20°C at 8 am and the room would be at 20°C at 8 am and stay there, as the anti-hysteresis software built into the TRV head (Energenie) was simply OTT.

The way to speed up heating a room, is to heat that room first, but the delay room to room can cause the boiler to modulate, so not a guarantee it will work.

 

[jj4091]

Our new Honeywell room stat works in a similar fashion. If I remember correctly it's something to do with the smart function keeping you comfortable. I presume it's so that you get used to the rise in temp. gradually. Having said that I leave the heating on 24/7 and just turn it down to 16 at bedtime so perhaps that plays a part. It seems to be always comfortable so I've never questioned how it works.