How Much Does a New Boiler Cost?
£1,500 – £4,000
supply and fit
A new boiler installation costs between £1,500 and £4,000 supply and fit, depending on the type of boiler, brand, and complexity of the installation. Combi boilers are the most popular choice for UK homes; system boilers cost more because they require a separate hot water cylinder. The price increases if pipework needs altering or a new flue position is required.
Average cost
£1,500 – £4,000
supply and fit
Prices vary by region, property type and tradesperson. Always get at least two quotes.
What affects the price?
Boiler type - a mid-range combi costs £1,500-£2,500 installed; a system boiler with cylinder costs £2,500-£4,000+
Brand and efficiency - budget brands (Ideal, Baxi) are cheaper upfront; premium brands (Worcester Bosch, Vaillant) cost more but carry longer warranties
Installation complexity - like-for-like swaps are cheapest; changing boiler type or moving the location adds £200-£800
Magnetic filter and inhibitor - adding a Magnaclean filter and system inhibitor is highly recommended and adds £100-£200
Labour vs materials
Labour for a new boiler installation typically runs £400-£800 for a straightforward swap. The boiler and ancillary materials make up the majority of the total cost.
Questions to ask your tradesperson
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