Advice on pressure testing

[pcannon]

Hi, i have just recently purchased a new 1 bedroom first floor mainsonette. The property was built in 1979 and the current boiler is the orginal one fitted when it was built a Baxi boiler. I want to get a combi bolier as it is cheaper to run and as the flat is tiny will give me more space as the tanks are removed.

I need some advice as i got a 3rd quote last night and the guy said that the gas pipe would not pass a pressure test and would be need to be replaced as the pipe is too old, costing even more money. I am not sure if he is trying to con me as the other two quotes i got never mentioned anything about the pipe or a pressure test!

I would be very grateful for any help and advice?

Thanks

 

[Prof.plumb]

In truth that chap was probably the most consciencious of the 3. Nine times out of ten when switching from a conventional boiler to a combi the gas supply is not adequate. This is because when you initiate a call for hot water the boiler must fire on maximum capacity which is usually a minimum of 24kW to heat your incoming cold main from probably 4 degrees to 55 in an instant.

 

[pcannon]

Thank you so much for your reply, this has put my mind at rest. Just have to figure out how to pay for it all :-/

Thanks again!