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Hi there - I'm looking for some advice on widening a fireplace please. We have just removed an inset gas fire with a view to installing a freestanding wood burner. Problem is the fireplace opening is not wide enough. The chimney is wide enough externally but internally it seems to have been...

Hi - thanks for your advice. I tried turning down the pump and the 'hissing' sound is a lot better. Unfortunately however the rads downstairs don't heat up very effectively as a result, even when all the rads upstairs are off! We have 4 rads upstairs (on 15mm with TRVs) plus the 2 bathroom...

Hi - I'm hoping I'll be able to get some advice .... We have a vented, gravity fed system with an expansion tank in the loft. There are 15mm pipes upstairs and 8mm downstairs. We've done a lot of work to balance the system to get reasonable heat downstairs. However, my question is about...

Hi. I have a leak coming through the pin of a lockshield valve. When the valve is shut all is fine, although of course there is no heat to the radiator! When I open the valve I get a leak through the pin. I am assuming the pin is loose or damaged which is causing the problem? To fix this I...