the labour price depends how much work and where you live. i think 1900 for a vaillant ecotec 831 fully installed etc is a good price, some of the prices of seen people pay for boilers and installations are shocking, some pay more than that for a useless boilers. vaillant are, in my opinion, the best boilers you can get. been working on all makes and models of boilers, of all ages for the last 7 years.
get a few other quotes but don't bother with an 'own brand' from a plumbing merchants, they're cheap for a reason. only get an 'a' rated boiler, 'b' rated ones are normally 10yr old designs modified to make them more efficient, 'a' rated boilers are designed to be condensing boilers.
i recommend vaillants all the time, i even fitted one in my own house last year, albeit not a combi.
I want to get the Vaillant Ecotec Plus 831 - Condensing Gas Combi Boiler fitted. NPower want just under £5000, British Gas want just under £3000.
If you could give me the details of the company you have the quote from, I would jump at that price. The boiler alone is £900, then you have to get the vent etc, plus removal of all old tanks and fitting. £1900 is a deal.
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