Top Floor Radiator Cold

I have four small radiators in a third floor loft conversion they are not coming on when i turn my heating on.

Top floor radiator cold. When a central heating system is signalled to switch on it sends hot water to radiators. The top of the radiator is cold. If you find that your radiator is heating up nicely at the bottom and yet the top of it remains cold the chances are you have air trapped in the system. Another common cause for a cold radiator is a stuck valve.

An effective way to release it is by bleeding the radiator which is a simple fix that can be done in minutes. A radiator that s cold at the bottom is more commonly a benign problem with some simple fixes available. The bottom of the radiator will be full of hot water as it should but the hot water is unable to rise to the top of the radiator due to the air. This is often the case if the problem is with an individual radiator.

Pumps can get warm but if it is hot or making a grating sound then it might be about to break down in which case it could be worth replacing. When the heating was put on i found only the top floor 4 had hot radiators looking at previous posts here i loosened the bleed screw on pump no indication of any air and tuned all bar 1 radiator off on floor 4 one radiator got hot on floor 3 turned off the one rad on top floor 4. To check if this is the case remove the rotatable head to. The thermostatic valve usually a white control directly beside the base of the radiator controls the flow of hot water to the radiator but from time to time can become seized often simply due to age.

However we recommend contacting a qualified engineer if you feel unsure about conducting the job yourself. Top floor radiators staying cold. We have recently installed bigger three column radiators on our ground floor which work fine as do the radiators on the second floor. If the radiator is cold at the top and warm at the bottom it could be a case of having a trapped air bubble.

Cold radiator at bottom summary and key points. A radiator that s cold at the top is probably being caused by trapped air and you can solve that through the strangely rewarding process of bleeding your radiators. Because of this air the hot water at the bottom of your radiator will be unable to reach the top of the appliance until the blockage is removed.