Why are my radiators warm when the heating is off and has been for months?

Answer 1

Sounds like the three-port valve has jammed. Get a plumber in to check it out, or check it yourself. There's a lever on the valve you can move to open and close the heating port, it should be shut if the heating's off.

Answer 2

The control unit for domestic hot water and central heating generally are simple to operate, just on off switches. When the central heating system is switched on it is the room thermostat tells the pump to come into operation, from this the boiler thermostat tells the burner to fire up.

Normally on a domestic system there will be a circulating pump. This can be fitted on the flow or return side. My guess your pump is on the return side, this means that if the gate valve is left open (it normally would be) on the flow side hot warm can raise in the pipe by convection, that is hot water is less dense than cold water and will therefore automatically find its way to the motorised valve. This valve operates to control the water from the boiler going to the central heating or for domestic hot water. If this valve is defective in the sense that is not closing off the heating circuits then your radiators may well get warm.

Answer 3

Your central heating and hot water system most be running from the same boiler ;combination ; it could be that your central heating valve has not closed ,try putting your central heating on and then turn it off again ,if your radiators are still warm you will need a plumber to check the valves , hope this helps you .

Answer 4

tough one here with little information to go on. Your radiator piping is picking up heat from somewhere. Either on the roof from sunlight or from paralleling a hot water line. If you can get it to work that way during the winter you'll save yourself some money. but I know that it is a drag to have More heat than you need in the summer. Try to follow the piping and see if the things above apply. Insulate the pipes from other heat sources and it should go away.

Answer 5

It's spill over heat, which suggests your water is way to hot. Turn down the temperature by a couple of degrees and you'll find you'll save a bit of money on heating/hot water bills,as it won't take so much energy to heat the water, or reduce the time you have the water heater on for. Hope this helps

Answer 6

cant answer your question but my advice would be to ask a plumber to check it out and whatever he finds to be the reason for the rads being warm you then carefully take notes from him of what causes same then make tracks to patent the phenomonon and then sell it to a heating consultant for a very large sum of money. this way you might be abel to pay off your plumber and still have a few quid to celeberate your new venture into the world of invention. the trick here however is not to tell the plumber that the heating is switched off as he might want to cash in himself as some of them have a brain you know. why dont you try to invent a solar powered spotlight yourself ?

Answer 7

Think you have a prob with the electrical bits (sorry can't remb the name of it!) that switch the heating on and off and heats up your water etc. These should be near your tank and they are in 2 small electrical boxes.

My heating was not switching off after having it on or the water wasn't heating up when the heaters were on etc, basically they weren't doing what I wanted them to do!! British Gas came out and changed some electrical bits that were next to the tank.

Answer 8

Check if you have a very large pilot flame. The other possibility is that if you have a electric hot water tank in your hot water circuit and it is set very high, it could transfer some of its heat to your central heating circuit. If so, reduce its setting or have it on only at certain times of the day or adjust the stop taps to achieve a better pressure balance.

Answer 9

Your heaters share the same water or oil that other appliances use in your home.This would be the reason ciculation of the fluid is still present.You can bypass the units by installing shutoffs when certain fixtures are not going to be used.

Answer 10

Suggest you change yor motorised valve. water is being allowed to divert to your central heating from the domestic heating. Don't ask a plumber to do it you'll need a second mortgage!