Boiler

James_R

Is it better value for money to heat a cold house with the radiator water temp near max for a short period (set on combi boiler) or have it midway Temperature for longer period? Thanks

Gerry1

The most efficient way to heat a house would be to inject a very large amount of heat a very short time before the desired temperature is reached, i.e. so that a step change (square wave) is achieved.

It's rather like filling a leaky bath to the brim, you could use a dribbling tap for a few hours or a fireman's hose for a few seconds. Obviously by the time the bath was full you'd have wasted far more water with the dribbling tap.

FreeBear

James_R wrote: »

Is it better value for money to heat a cold house with the radiator water temp near max for a short period (set on combi boiler) or have it midway Temperature for longer period? Thanks

Depends on your radiators - Most radiators are rated at an operating temperature of 75°C and give a lower heat output at lower temperatures. So unless you have radiators designed for a low temperature heating system, run hot (my opinion).

C_Mababejive

Its cheaper to put a thermal vest on provided you already own one.