changed taps on an old customer's bath, and noticed she has an initial "surge" of hot water which then dies down to normal. this happens at each hot tap if the water is left to build up pressure. what is causing this? she has a combi boiler that is due to be serviced soon and I would like to tell her what they should look for.
high pressure hot water
- Thread starter duffin
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I am taking that they don't have a hot water cylinder in the house? check what the pressure bar is on the boiler. does the pressure build up fast again after running the tap.
no tank, pressure builds up within a minute, and thought the pressure gauge was just for the central heating?
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This is typical of a blockage, standing pressure builds up (equalise's throught the pipework ) initial surge of hot water, but under flow pressure drops of............. probably a blocked filter or flow restrictor somewhere probably on the boiler, posting make and model of boiler would help..............
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