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Two companies including British gas and a large local said they will fit new 22mm from metre to boiler. it's hidden in loft, yet it was 22mm to just above the boiler (they didn't check). then reduced to 15mm. 3rd guy cheapest quote says 28mm from metre. I looked at the rough guide it's 12m so...

Recently installed a new secondary heat exchanger because it was going hot and cold, boiler would shut down due to over heat, this fixed that. After I installed it and turned it on it went to 83C+ and hot water squirted out of a pressure valve inside the boiler. then it stopped and didn't do it...

Okay bonded all the copper pipes in my bathroom and the other side. As the pipes feeding the shower are right next to my central heating pipes (retro fitted to 1930's house) so I decided to bond them too. From what I can see none exists in my entire house apart from the mains of which the...