I am in the process of getting a new boiler fitted and the installation guy says that my 15mm gas pipe is not up to the job and I need to have new 22mm gas pipe fitted.
I understand that the 22mm will provide more gas making the boiler run to full capacity. and the fact that most new boilers require this. I have a few issues with this:
- would I need to have all gas pipe work changed from 15mm to 22mm?
as the gas cooker also has a 15mm gas pipe, and even though he is a registered with CORGI is this leagal to change the pipe work, and is it safe to have a gas pipe running outside the house?