We have a Worcester greenstar junior combi boiler which, according to the paperwork we got from the previous owner of the house, was fitted in 2012. We had to get an engineer out early in 2016 to repressurise the expansion vessel as the cold pressure was below 1 bar but hot pressure up to over 2.5 bar. My other half noticed the cold pressure was low last week so topped it back up to just over 1 bar, today it's nearly down to the red when cold again which seems odd, but he also noticed the hot pressure was up on 2.5 bar again on Fri so I'm assuming it has vented some water via the PRV and the cause is that the expansion vessel needs repressuring again. Is it normal for that to need repressurising again in just three years?
How often should an expansion vessel on a combi boiler need repressuring?
- Thread starter Kumquat
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Yes perfectly normal. we always drain pressure off and recharge vessel at service.
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They dont service boilers. they only do a saftey check
and after 7 or so years of that, the boiler is bust due to lack of maintenance, and then they will sell you a new one.
They will have their own interpretation of what a service entails. Best to cancel that expensive contract and give the work to a local independent, who still probably do a better job for less money
In which case read the manufacturer's instruction manual for your particular boiler to see what a "service" comprises, and hold them to it.
'just sayin', like....
Saying nowt
D
durhamplumber
Make sure they strip the combustion chamber annually,and replace every gasket,even though the MI say its not required!!!Proper service.lol
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