Radiators / changing pump Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[ampo2128]

Hope someone can help me.... I have 2 large double rads at the front of the house (11 Rads in total) and they are struggling to warm up, after a while they get luke warm. If I turn a rad off in another part of the house the warm up considerable, yet when i open the closed rad again the heat goes. I am toying with the idea of changing the heating pump from a grudfos 15-50 to a 15-60 to help the water get around the system better.

I have a Worcester condensing boiler fitted about 2 years ago.

the hot water is find so cannot see a problem with the boiler....

If anyone has any advise it would be very helpful

[htg engineer]

is the pump speed set to III ? it could just be the age of the pump.
A 15-60 pump would help, 11 radiators is quite a large system.

[coupedummy]

id say the radiators need balancing out.mens restricting the flow to the nearest radiators to enhance flow to ones futher in the system.
Google it,try that first before removing pump

[ampo2128]

The pump is set on III, the pump was inplace when we moved in 2 years ago, at the time of the boiler change i was told the pump was fine. I have a 3 bedroom house with a large extension on the side that has 3 rads ( 1 in the kitchen and 2 in the dining area)...