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    Q why do i need a replacement boiler? That the service valve has not been switched off or is partially closed. Since 2005, pretty much all new gas combi boilers have been wall-mounted condensing units this just means that they’re small and efficient models, mounted on the wall and thus without the need for external tanks the fact that combi boilers are compact, economical, use mains pressure and are quickly installed has led to them becoming the preferred boiler.

    Added: 2018-06-01 | Category: boilers | Comments: 0