Combi or system boiler? How each works, which homes suit them and typical installation prices. Call 020 8050 9933.
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The right boiler depends mainly on how many bathrooms you have and how much hot water you use at once. Here is how combi and system boilers differ.
A combi boiler heats water on demand straight from the mains, so there is no hot water cylinder or loft tank. It suits smaller homes with one bathroom and saves space.
A system boiler heats a separate hot water cylinder that stores hot water. It can supply several taps and showers at once, which suits larger homes with more than one bathroom.
A combi needs no cylinder, which frees up space. A system boiler needs space for the cylinder but can deliver good flow to multiple outlets at the same time. Your home's mains pressure also affects which works best.
A combi boiler installation is typically £1,800 - £3,000 and a system boiler £2,500 - £4,000, including VAT. Final prices depend on the boiler, flue and any pipework changes.
Choose a combi for a small to medium home with one bathroom. Consider a system boiler for a larger home, several bathrooms or when two showers are often used together. An engineer can check your property and advise.
Often yes, but it depends on your pipework and water pressure. An engineer can check before you commit.
Yes. We install new and replacement boilers using Gas Safe registered engineers.
It depends on the job. Your engineer will give you an estimate after seeing the property.