How the system works
Combi boilers are economical to run and are able to produce an endless supply of hot water, although the flow may be limited if other taps are running at the same time. The combi boiler delivers hot water at the same speed as your cold taps.
As the combi boiler heats water instantly, direct from the mains, there is no need to wait for a storage cylinder to heat up, and you won't run out of hot water. There's also no need for cold water storage tank so it's perfect if you are limited on space. A pump will circulate hot water via the pipes to heat the radiators.
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