Oil boilers

Building regulations that came into force on April 1st, 2007 state that any replacement or new oil boiler must be a condensing boiler. Rare exceptions can apply but Domestic & General fit condensing boilers as standard.

Condensing boilers

Condensing boilers are high efficiency because they convert water vapour (or steam) traditionally expelled through the flue into the atmosphere into useable heat.

The vapour is condensed (hence the name of ‘condensing boiler’) into a liquid condensate within which is latent heat that can be harnessed and used to warm your home.

This process means condensing boilers are considerably more efficient than the old-style conventional boilers that came before. Most condensing boilers state that they have a SEDBUK rating of ‘A’ – this means they convert 90 per cent or more of the fuel they use into heat.

Condensing boilers come in three types:

 

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