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Hi, can anyone tell me the minimum flow rate for a Valiant ecotech plus 424 boiler. I am trying to set my Honeywell bypass valve. (boiler keeps over heating and going into anti cycle mode). I think it could be lack of flow ?. Cheers Graham.

Hi, I have recently had my central heating system replaced. The issue I have is with TRVs (Drayton TRV4s) noise and control. From what I have read it looks like water velocity ?. The TRVs / rads seem to be receiving very hot water very quickly. Consequently the TRVs make a hissing noise then...

Hi, help and advice needed. Recently moved into a 1960 as built dormer roof / pitched roof house. Bloody freezing !. Found only 25mm insulation under the boarding in the pitched roof loft and only 25mm in the dormer flat roofs. Both open to each other via the 200mm roof / ceiling joists. No...