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Brian, Plumber
Category: UK Plumbing
Satisfied Customers: 841
Experience:  16 yrs. experience as plumber, including full bathroom and kitchen installations.
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Low pressure when heating is cooling ,gh pressure when

Customer Question

Low pressure when heating is cooling ,high pressure when heating on,baxi neta-tec 28 ga
Submitted: 1 year ago.
Category: UK Plumbing
Expert:  Brian replied 1 year ago.

Hi this is almost certainly the expansion vessel. its either ruptured or lost pressure.

there will be a shraeder valve on it somewhere if you push the centre as if you were letting air out of a car tyre and you get water then its ruptured and needs replacing, if you get nothing or just air it will need pumping up

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