My heating is provided by a carbon neutral district heating scheme, so I just have a heat exchanger unit. I’ve got some sort of Honeywell wifi thermostat thing, and it tells me the heating was on for 17 hours last week, and pretty similar the week before. December and January were around 150 hours per month. The ‘stat is set to 16 degrees over night (22:00 to 08:00) and 21 degrees the rest of the time. It’s got a geofence setting, which puts it into ‘away’ mode once I’m 1.5kms away from home (can be set from 500m to, bizarrely, 805.2 kms). Though it never seems to drop below around 18 no matter how long I’m away. Solar gain through the windows helps I guess. Or you can run it as a traditional timer system, but with, as far as I can see, and unlimited number of on/off windows, each of which is adjustable to the minute. Too much effort to set that up though, for little benefit I can see
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