It's not common, but gas pipes sometimes get partially blocked by water. Have there been gas main repairs in the area in the recent past?
Whatever the problem, the solution is to get a GSR in to diagnose and fix it. Do not be tempted to try DIYing this one.
Part of the pavement/road was dug up last year - I didn't pay any attention to it though, so I'm not sure if it was gas, H2O or electricity.
As far as I know, no other house in the road has had to resort to swapping to a 22mm pipe when they've had a new boiler fitted - hence my suspicion of something partially blocking my pipe, either upstream or downstream of the meter.
Or, the meter itself is restricting gas flow (more than meters normally do).
I'm not tempted to DIY it. I know what gas can do when it goes off!
Air and gas in the right mixture (with added ignition) = potential explosion.
No GSR would carry out your request.
Only a GSR can break the pipework.
How else can they check if the pipe is partially blocked then?
The new boiler would probably work quite happily on a lower pressure, the manufacturers spec would probably show that, but all appliances and pipework installed today have to conform to the Regulations in force today.
As above that means no less than 1.5mb drop
The chap who tested the pressure at the boiler did not test the pressure at the meter.
The other chap tested the pressure at the meter (when he changed the regulator) but did not test the pressure at the boiler.
In other words, both points have not been tested at the same time. Hence, I have no idea whether the drop from meter to boiler is more or less than 1.5mb. All I was told is that the pressure at the boiler end of the pipe is too low and a 22mm pipe would solve it.
