Types Of Boiler
If you have a gravity heating system (with a water tank in the loft) then you'll need a conventional boiler. These use a traditional system which heats up a store of water before you need to use it, via a hot water cylinder and header tank
Although more expensive than a conventional boiler a condensing boiler is highly efficient - using an extra heat exchanger to extract further heat from the water vapour produced in the combustion process, so very little heat is wasted.
For a flat or small house Combi Boilers are most suitable since they don't need to store water but instead heat the water as you use it. There is no cylinder, no tank and no connecting pipe work, which saves space and reduces hot water costs. A combination boiler produces a near instantaneous supply of hot water on tap, 24 hours a day. Unlike conventional heating and hot water systems, a combination system does not store hot water.
British Gas
www.est.org.uk
The Boiler Efficiency Database
www.sedbuk.com
The Energy Saving Trust
The Energy Saving Trust
DEFRA
www.defra.gov.uk
A Guide To Gas Boilers
Boilers: Alternatives To Gas
Gas Safety: 10 Dos & Don'ts
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