Pressure Loss on Combi Boiler Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[spider13]

Before I lift any more carpet and boards, could there be any other reason for a frequent loss of pressure, other than a water leak somewhere in the central heating system/pipes/rad's etc.? Boiler is only 2-3 years old and losing pressure/needs topping up every few weeks. Can't find any damp, wetness anywhere in the house. Please help.
Thank you

[bazza]

hi spider other possible reasons cud be a faulty pressure gauge a faulty prv (pressure relief valve) or air in the system (do you vent rads alot ! u cud also check gauge n see if pressure is going high wen heating on 3bar if so it cud be a problem with expansion vessel hope this helps bazza