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Is it possible to clean a gas pipe to clear it from a blockage or do you just have to change pipes?

working pressure. A gas board engineer has been out and check the meter - he is happy there is no problem at the meter.

I have a Potterton Promax HE plus 15/2. I have recently had a water leak which was fixed by a Baxi engineer. He found the gas pressure at the boiler to be 15mbar. The gas pressure at the meter is 22mbar. I have been told the gas pressure at the boiler should be at least 17mbar, the manual says...

Hi I have had the cold water combination and automatic air vent (there is evidence this has leaked before and was left closed) changed. I have found a leak (hopefully THE leak) from the boiler. The boiler is a Potterton Promax 15/2 HE Plus boiler (15yrs old). The leak is coming from the flow...

The boiler stopped working a few months ago. The pressure was down at 0, so I refilled to 1 and restarted the boiler. it went down again quickly. I found that leak when investigating the radiators. You can take the radiators off the wall they have plastic pipes that come out the wall behind the...

Thank you Madrab. I am having the cold water valve replaced as this is leaking badly. I have been told that this wouldn't cause the pressure to drop. Is that true?

Hello, I have an unvented cylinder, Megaflo HE. The pressure drops from 1 bar to 0.4 over about 5 days then it will stay at 0.4/0.3 for at least a week (I usually then bring the pressure back up to 1). It never drops to 0. I have searched for leaks on all the radiators and around the cylinder...