Boiler help.....?

[Lewis1988]

Hi all

My boiler keeps loosing pressure...aghhhhh

I have had the PRV replaced as it was dripping on the outside of the house so suspected the PRV was bust
But this hasn't cured the problem

Any ideas ???

[Viking]

Has the prv now stopped leaking? If so put a bucket under the discharge pipe and make sure it's not opening when hot. If the bucket stays empty then you have a leak on the heating system or boiler (look for water).

If the bucket fills with water then you have probably got a failed expansion vessel. Check this and report back.

[moulin12]

might sound obvious, but double check that any boiler filler valves are shut tight.