I was curious about the benefit of just leaving the gas central heating on versus on/off on the timer.
Reading online, you will save some money setting the timer.
But each house is different, and in our house, there aren't many times when the house is empty.
My wife has thyroid problems and always feels cold, so the heating tends to be much higher than other houses.
So the front/living room is set to 23C day and night. That's where the thermostat lives.
The rest of the house radiators gets heat only when the front room needs heat.
I was going to get individual smart stats for each room, but have found that the current method seems to work for us.
We have a great Bosch floor standing combi boiler which is very efficient. Loft and cavity wall insulation. Modern double glazed windows. Maybe the most important bit is shutting the very heavy/thick living room curtains when we go out or when it gets dark.
It's a largish 4 bed property, yet is surprisingly cheap on the gas bills. Electric is another story, as the house is very automated meaning gadgetry stuff is always on. If everybody leaves the house, the automation will shut everything down including the heating. But as said that is rare.
I got a message the other day from HIVE which we use to control the heating. It was giving me stats as to my boiler usage.
I was very shocked to see that the gas boiler has only been running for a total of 1 hour a day!
The graph shows the heat cycles from 22C to 23C which is the trigger points for switching on and off etc.
It shows the boiler only needs a short while to heat the room back to 23C, then shuts down.
So that explains the cheap gas bill.
Insulation and curtains seems to be the trick!