Why does the central heating system comes on on its own accord

central-heating

Can anyone tell me why my central heating comes on by itself: the radiators get hot and stay hot for around 1-3 minutes then the system turns back off again. This can happen any time throughout the day and night, and you can hear the system kicking in.

Best Answer

If your system also heats your domestic hot water, it may be coming on to maintain the hot water temperature. Depending on the setup, you may be getting some hot water circulation through the radiators when this happens. Is the radiator system steam, or hot water? If it's hot water, can you tell of one or more of the circulators come on when the boiler runs?