Most efficient temperature for thermostat?

MiM

My wife's heard it's best not to let the house dip below a certain temperature, even if you're out.

Is this right and if so, does anyone know the best termperature to set the thermostat to?

closed

no.

whatever is comfortable, or if you want to save money, the lower the better

Pincher

The temperature where pipes will burst, unless you drain the pipes.
Most central heating thermostats go down to 10 degrees, so that is as low as you can set it.

Modern boilers have frost protection, so they will switch on before it gets too low. In this scenario, TRVs set to zero means no hot water will get to those rooms. So you should NEVER turn them down to zero. "*" means frost protection on a TRV: use it.

macman

Whoever told your wife that was not an RGI I suspect. Boiler on = burning gas = costing more money.
Have you thought about keeping your oven on a low temp between meals because it's 'more efficient'? I think not.
Please please mods, can we have a sticky on this one?

penrhyn

For what its worth the fallback temperature on my programmable thermostat is 15 c, the house rarely drops to that level.

Cardew

MiM wrote: »

My wife's heard it's best not to let the house dip below a certain temperature, even if you're out.

Depends how you define 'best'!

It is certainly cheaper to not have the heating on when you are away from the house.

However the colder the house the longer it takes to get back to a comfortable temperature.

As always it is a compromise between cost and convenience.

MiM

Ooh, hit a moneysaving nerve here! Thanks for all replies, will let her see this tread!