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Central Heating

plumber made my boiler issues worse :(

Anonymous user 26/06/2026 - 7.32 AM

i had a plumber come round to try and fix our hot water that was running hot cold. its a 10 year old combi boiler that has been serviced every year and only just started having this problem. since he's visited the hot water now runs very hot and rumbles/rattles for a few seconds after it gets going. it has also a few weeks after he supposedoly fixed it has now started to cycle between slightly cooler and hot again. I think there is air in the central heating system as sounds like water running when it's switched on which never used to happen before. there is a water hammer (that the right term?) when toilet flushed and hot water opened too quickly- as in pipes rattle im worried that maybe he's played with the water pressure or something as i've noticed that water also comes out of the bathroom tap when the hot water is on full. just weird. any advice on what the problem could be or what he might have done wrong? i'll be getting a plumber in to take a look, but would appreciate some feedback on what people might think is going on

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1 Answer

David Hunt

Rating: 4.4 out of 5
Hornsey, London
I dont think he has done anything to your water pressure. Unless he has installed a pressure booster pump or removed one. I'd advise using a gas or heating engineer over a plumber for a boiler breakdown. From the information you've provided it is not possible to really offer you a solid answer. You need a diagnosis visit from a gas engineer who specialises in breakdowns.
Answered26 June 2026
0