The radiators of the central heating system are heating only the lowest few inches. This happens mainly upstairs.
I drained air out of them using the square screw till a bit of water went out and they heat up.
The day after that we had the same issue and did the same thing and this continues ever since for like 2 weeks.
Today I decided to get this over with and drain air till its all gone so I drained every radiator at least 5 times and still they are going cold after some time.
Btw - not sure it has anything to do with it - the hot water boiler we heat using electricity because the central heating wouldn't heat it.
Thanks in advance,
Can you please tell me how can I find the leak? I see no water on the floor/carpet anywhere so is it inside a wall?
I went up the roof to look at the tank there and the only tank I saw was full but I'm not sure its the right one.
When CH is turned off, all water from upstairs radiators flow out immediately and fast - I can hear the air air bubbling into the radiators. After a few minutes their are almost empty.
None of that happens with the radiators downstairs.