You’d be right in thinking that Combi Boilers are cheaper than Regular Boilers (sometimes known as traditional, conventional or heat-only boilers) to install, this is thanks to less elements reducing the work involved, plus a Combi Boiler doesn’t need to be connected to a hot water cylinder or feed tank in the attic, and can be pretty much installed anywhere in your home.
If you’re looking for a quick change of Combi Boiler and require a replacement installed in the exact same spot, then expect to pay on average between £500–£700, should the upgrade/replacement be located elsewhere then costs typically range from £1,500–£1,800.
If the installation is more complex, for example you’re looking to swap a Conventional Boiler for a Combi then expect to pay more, this type of install takes longer as pipes will need to be re-plumped and the water tank and storage cylinder will need to be removed.
The table below provides a quick idea of general Combi Boiler installation scenarios and prices.
| Scenario |
Price |
| Scenario: Replacing a Combi Boiler with a new Combi Boiler in the same location |
Price: £500–£700 |
| Scenario: Replacing a Combi Boiler with a new Combi Boiler in a different location |
Price: £1,500–£1,800 |
| Scenario: Replacing a System Boiler with a new Combi Boiler |
Price: £2,000–£2,700 |
| Scenario: Replacing a Regular Boiler with a new Combi Boiler |
Price: £2,600–£3,000 |
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