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Morning I had a very small leak coming from the union where the plate heat exchanger connects to the diverter valve. I wanted to leave it alone as it was about one drip a day. I knew what could happen but the missus was giving me grief about it! Anyway, I nipped up the nut, refilled the...

Evening all Just noticed no pressure on the boiler gauge, repressurised it to 1.5 bar, then water started dripping. Found it to be coming from the body of the expansion vessel(pinhole). My questions are:- 1/ Where can I buy one cheap? 2/ How difficult is the replacement? I've recently done...

Hello all My Worchester Bosch 28CDi is not getting as hot as it used to on the central heating side. A month ago, if the thermostat was set to maximum, you couldn't hold your hand on some radiators for more than a few seconds, but now, although they are still pretty warm, they are not getting...