Problems with the heating?

Question

Any help would be much appreciated.
The problem is that sometimes randomly the radiators in my house only seem to be warm, not even close to hot even when I have the boiler set to maximum but other times they're really really hot-too hot to touch, there seems to be no pattern to this, any ideas?

Answer 1

Your radiators need a bleedin' good bleeding!

Answer 2

If you have thermostatic valves fitted to the radiators and the rooms are warm even when the rads are cold then nothing is wrong, Thermostatic valves respond to air temperature not water so when the room warms up they turn down the radiator, If it was air then the top of the radiators would be cold all the time as the air cannot escape, so this is not the problem.

Answer 3

Air is circulating through the system. At each radiator open a high point bleeder to get air out.

When air occupies the radiator space then that space has no hot water in it.

Answer 4

YOu have an air lock somewhere in your heating system. You won't get it out by bleeding the radiators. It is moving around the system slowly, that is why this problem is not constant. you do need a plumber to get rid of it and clear it out of the ststem.

Answer 5

is tough to diagnose exactly - but work through in this order:
1 - air lock in system is disturbing the flow - try power flushing the system and re-charging (by a professional)
2 - The pump could be on its way out and be jamming or working intermittently.
3 - your valves are jammed/TRV faulty.

Call a plumber.

Answer 6

Its probably the three port valve playing up.Get a plumber in

Answer 7

Problem could be caused by a faulty room thermostst cutting off too soon sometimes.

Answer 8

bleed radiators resetyour timer and get your thermostat checked out

Answer 9

check your room thermostat