TYPES OF BOILER
These can be bought designed to use either gas, oil or LPG as their energy source.
Heat Only Boilers
These were used in most domestic central heating systems and the vast majority of homes built in the UK prior to 1970. They provide heat for radiators and heat water in a separate hot water cylinder. The cold water for this process is supplied, by gravity, from a tank which is usually in the loft. You can still have one today and they have some advantages over other types of boiler.
Combination (Combi) Boilers
A combi boiler is so-named because it provides heat for radiators and also heats water which it supplies on demand. When a tap is turned on, water is immediately taken from the mains supply and heated in the boiler before being fed out of the tap. They are very popular due to their relative affordability and functionality. However, they are not suitable in domestic situations where several people may be demanding hot water simultaneously.
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