Boiler Installation Cost — New Build vs Replacement
Compare the cost of a first-time boiler installation in a new build vs replacing an existing boiler.
Typical cost£800 – £3,500
New Build Boiler Installation vs Replacement
A first-time installation in a new build is typically cheaper than a full replacement because there's no old boiler to remove, and pipework routing is done during the build phase.
New Build Installation Costs
Expect to pay £800–£1,800 for a first-time installation in a new or converted property.
Replacement Boiler Costs
Replacing an existing boiler costs £999–£3,500. Extra costs can include removing the old boiler, capping redundant pipes, and upgrading outdated systems like the tank or programmer.
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