Is It cheaper to leave combi boiler on all the time at a lower setting or turn it on and up when you need it ?

Answer 1

Since a Combi Boiler deos not actually store hot water, it only heats when you need it. Therefore, it should not hurt to leave it on all the time

Answer 2

If you mean for the central heating, then I would leave it on at a lower setting, to tick over at night. This will avoid the long re-heat time in the mornings. You would be even better to do this automatically by replacing your existing room stat (or fitting a new) Optimising / progammable thermostat, which you can set to raise and lower the overall temperature whenever you want throughout the day/week. The best of these is the Honeywell CM67, I have fitted dozens of these.

http://content.honeywell.com/uk/homes/programm.htm#CM67

Answer 3

It is cheaper to leave it on minium setting overnight than try to heat up house from very cold each morning

Answer 4

keep it on is cheaper....it comes on every so often in the night to keep it from freezing in cold weather anyway

Answer 5

when you need it...