Boiler Replacement Cost Calculator UK
Need a new boiler? Get an instant cost estimate for combi, system, oil boilers, and heat pumps — including government grant information for heat pumps.
Most popular — heats on demand, no tank
Estimated Average Cost
£2,850
Low Estimate
£2,000
High Estimate
£3,700
FAQs
How long does a boiler last?
A modern gas boiler typically lasts 10–15 years with annual servicing. If your boiler is over 10 years old and frequently breaking down, replacement is usually more cost-effective than repair.
What is the Boiler Upgrade Scheme?
The BUS offers a £7,500 grant towards an air source heat pump or ground source heat pump. It's available through your installer, who applies on your behalf.
Should I go combi or system boiler?
Combi boilers are ideal for smaller homes with 1–2 bathrooms and no need for stored hot water. System boilers suit larger homes with high hot water demand.
Can I get a boiler on finance?
Yes. Many installers offer 0% or low-APR finance. You can also check if you qualify for the ECO4 scheme, which may fund a free boiler if you receive certain benefits.