Boilers: Compare features & prices Vaillant ecoTEC plus 630 review http://www.which.co.uk/home-and-garden/heating-water-and-electricity/reviews/boilers/vaillant-ecotec-plus-630/review/
The Vaillant EcoTEC plus system range of condensing gas boilers uses a separate storage cylinder (usually fitted into an airing cupboard) to store the hot water supply. Often called 'sealed system boilers' Vaillant claims they are lightweight and easy to install, as there's no need for a water tank in the loft. Read our full review to find out whether the EcoTEC plus 630 is the right boiler for your home, and more importantly, whether Vaillant combi boilers benefit from good brand reliability.
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