Central heating problems
Cold radiators, boiler pressure dropping, kettling, controls that ignore you and heat pumps that will not keep up.
No Heating Or Hot Water
CautionThe boiler is dead or running without producing anything — the whole system has stopped, not one radiator.
Boiler Losing Pressure
CautionYou top the gauge up to 1.5 bar and days or hours later it has dropped again.
Boiler Stopped In Freezing Weather
Low riskThe boiler cut out overnight in a hard frost and is gurgling or showing a fault code — usually a frozen condensate pipe.
Radiators Cold At The Top
Low riskThe bottom of the radiator is hot and the top half stays cold — air is trapped in the panel.
Radiators Cold At The Bottom
Low riskThe top of the radiator is hot but the bottom stays cold — sludge has settled inside the panel.
Boiler Kettling Or Banging
CautionThe boiler rumbles, whistles or bangs like a kettle coming to the boil when the heating fires.
Hot Water But No Heating
Low riskTaps run hot as normal but the radiators stay stone cold — the heating side alone has failed.
Heating Comes On At The Wrong Time
Low riskThe programmer, timer or thermostat is ignoring you — heat arrives when you did not ask for it, or never.
Water Discharging From The Cylinder Pipe Outside
High riskWater is running or dripping from the tundish pipe outside — an unvented hot water cylinder is releasing pressure.
Heat Pump Not Heating The House
Low riskThe heat pump is running but the house never gets to temperature, or it struggles as soon as it turns cold.