Re: Boiler pressure erratic
Posted by Townleygreen
February 11, 11:30AM
If the pressure keeps dropping, it means you have a leak somehwere in your system.
If it's below your ground floor then there may not be any sign of a leak.
You can use Fernox F4 Express Leak Sealer which you insert in a radiator bleed nodule and it usually sorts the problem.