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Ok, so firstly British gas boilers are rebadged Worcester bosch units anyway so reliability should be the same.
The boiler analogy is not really true, there are various heat output models which relate to the hot water only!
Looking at worcester 24 30 or 38 Kw the central heating system is 24kw for them all, the higher power only relates to the hot water side as 24kw is pretty much sufficient for even the biggest of 'normal houses'. As far as the hot water side goes, i've got a 24kw worcester and even with the hot water set to maximum its got enough hot flow to pull a layer of skin off, the only time you'll need a higher output is if you have more than 1 bath / shower running at the same time.
if you get a bigger one and don't use its full potential, its likely it would be less efficient.
Finally a British Gas sale is a bit like DFS or PC World, Their standard price will probably be at least 3x that of an independant guy, so they can give you 50% off and still make a tidy profit. Seriously if you are considering a new boiler get a few local guys in the give you a price.
When i had mine done last year my quotes were:
British Gas £4000
Local Geeza 1: £3000
Local Geeza 2: £2300
Local Geeza 3: £2200
Ps british gas salesmen will tell you anything to get you to buy, no matter how good the deal, discounts, promises, i'd almost guarantee you could get better elsewhere |
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