7 Aug 2008
Reaction score
United Kingdom
i have a combi boiler when i have a shower now the water fluctuates between hot and cold the shower is a mixer one it used to go cold if the hot tap in the kitchen was turned on but only then any ideas
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your central heating boiler should be providing you with consistant hot water and this sounds like you need to get a heating engineer in to have investigate further as it could be a blocked heat exchanger, sensor fualt, burner pressure, shower mixer mixing, venturi, inlet pressure

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