I provide a 6 year workmanship warranty in line with DCLG guidance. 1 year is pathetic, anyone who feels their workmanship is only capable of lasting a year should have their competence questioned. I'd look for 2 years minimum.
As for boilers, I'd recommend the Intergas HRE OV, which has a 7 year warranty and copper waterways that are much less prone to corrosion and premature failure than the Ri's aluminium. It's also considerably easier to maintain, and doesn't make use of plastic and rubber components where there should be copper, such as in the gas pipe (yes, part of the Ri's gas pipe is rubber, and yes it does need replacing periodically because it suffers heat fatigue and splits).
If your potential installers haven't worked out how much heat your property needs, it's time to start again. A lot of installers end up putting oversized boilers in, resulting in needlessly higher running costs. You should also expect your system to be cleaned properly or there's a chance your warranty will be invalidated.
As for boilers, I'd recommend the Intergas HRE OV, which has a 7 year warranty and copper waterways that are much less prone to corrosion and premature failure than the Ri's aluminium. It's also considerably easier to maintain, and doesn't make use of plastic and rubber components where there should be copper, such as in the gas pipe (yes, part of the Ri's gas pipe is rubber, and yes it does need replacing periodically because it suffers heat fatigue and splits).
If your potential installers haven't worked out how much heat your property needs, it's time to start again. A lot of installers end up putting oversized boilers in, resulting in needlessly higher running costs. You should also expect your system to be cleaned properly or there's a chance your warranty will be invalidated.
