ime having my bathroom rearanged and have a 15m gas pipe to the boiler that has to be moved about a metre. my boiler has been in for approx 7 years the builder tells me that it has to be changed to 22m back to the meter its been no trouble why cant he re direct 15m under bathroom floor its 3 elbows and mt pipe he wants to run 22m from one end of the house to the other.

rob, October 2008

As long as you can achieve 20mbar working pressure you are ok,and it all depands how far your gas meter is from your boiler. To achieve the correct gas working pressure at a appliance you would need to have a pipe size at least 22mm normly,but in some cases one has to increase the pipe size to 28mm to achieve the correct gas working pressure. so let the engineer decide what is best for you.

universal heating ltd, October 2008

he wants to do the work to your property but does not want to end up with the burdon of having a at risk gas installation on his hands. a few checks would see what work needs done.

The main thing to check would be the appliance working pressure. If the pressure is 20mbar then its working at designed pressure and no one could really kick up too big a stink. If not its undersized pipework and will 100% need renewed

iain, October 2008

Installer needs to comply with regulations else commits criminal act. If regs say 22mm pipe then that's the end of it - has no discretion. Your lack of previous trouble and age of installation have no bearing on his obligations.

Ask what the regulations say.

Peccavi, October 2008