"Fred" wrote in message
...
Andy Hall wrote:

In this case, bigger is better.

Combi boilers are specified in
terms of the rate of flow that they can
achieve for a given temperature rise - usually
35 degrees, but do check specs.

I have a hard time to beat the Worcester
Bosch 40 Greenstar with a flow rate of 16l/min.
Baxi, Vaillant and the lot do not seem to match
even this. Where can I find bigger flow rated boilers then?

The Greenstar is a v good boiler, with a good flowrate and well priced too.

At least that is what the plumber said and
he seems trustworthy. Speaking of trustworthy,
how do you gauge a plumber?

The thing to do is know your specification and ask them to quote on it. The
Greenstar is a god choice, so go for that, do not be persuaded otherwise.
It does require a 28mm gas supply, but can be reduced to 22mm towards the
boiler depending on the run. Tell him that you checked wityh the maer on the
gas pipe size. Some cowboys would keep, or fit, 22mm.

Go on recommendations and ask them to quote. Combi's are easy to fit, even
for a dumb plumber, so not that much to go wrong.