Hi, we're after a new Worcester Bosch combi and have used their site to find accredited fitters in our area. Although we now have a couple of quotes, we're wondering whether what one fitter is proposing will void the manufacturer's guarantee.
Basically, the gas pipe that supplies the existing boiler is too small for a new Worcester combi. Fitter No1 wants to bring a larger diameter pipe up an external wall (two storeys) from the meter downstairs and into our flat. Fitter No 2 informs us that 9 times out of 10 the gas pressure is high enough from smaller pipes to do a conversion/widening at the point where it connects to the new boiler. Only if the pressure isn't high enough would he bring up a new pipe from downstairs.
Keeping the existing, smaller pipe in situ is going to work out cheaper and is our preferred option. However, when we asked Fitter No 1 if he could also do this (providing the gas pressure is there), he said that using the smaller pipe would void the Worcester Bosch warranty. Is this true? Would the warranty be voided? (any Worcester fitters here?)
Also, do fluctuations in gas pressure have a wide spread? If so, I should imagine that using the smaller pipe means more chance of losing pressure. Yes? If that's the case, would this compromise the efficiency of the boiler, or worse still damage it in some way?
Any help appreciated. Thanks.
Basically, the gas pipe that supplies the existing boiler is too small for a new Worcester combi. Fitter No1 wants to bring a larger diameter pipe up an external wall (two storeys) from the meter downstairs and into our flat. Fitter No 2 informs us that 9 times out of 10 the gas pressure is high enough from smaller pipes to do a conversion/widening at the point where it connects to the new boiler. Only if the pressure isn't high enough would he bring up a new pipe from downstairs.
Keeping the existing, smaller pipe in situ is going to work out cheaper and is our preferred option. However, when we asked Fitter No 1 if he could also do this (providing the gas pressure is there), he said that using the smaller pipe would void the Worcester Bosch warranty. Is this true? Would the warranty be voided? (any Worcester fitters here?)
Also, do fluctuations in gas pressure have a wide spread? If so, I should imagine that using the smaller pipe means more chance of losing pressure. Yes? If that's the case, would this compromise the efficiency of the boiler, or worse still damage it in some way?
Any help appreciated. Thanks.