Heat Pump Estimate

Heat pump cost · London

Heat pump costs for London homes

Victorian terraces, flat conversions, conservation areas — London housing has its quirks, and they affect what a heat pump costs. Get an estimate built on real London installer pricing, then a fixed quote from a local MCS-certified installer.

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Figures verified June 2026 · re-checked at each update

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Heat pumps sometimes need larger radiators.

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What London homeowners should know

Most of London's housing stock predates modern insulation, which shapes both the cost and the approach. The good news: heat pumps are installed successfully in period London homes every week. The cost just depends on a few things that are particularly common here.

Victorian and Edwardian terraces

The classic London terrace usually works well with a heat pump. Solid walls lose more heat than cavity walls, so insulation upgrades — loft, floors, sometimes internal wall insulation — make a real difference to both the system size and running costs. Expect a conversation about radiators too: a handful often need to go up a size to run at heat-pump temperatures, rather than the whole house.

Flats and conversions

Flats can absolutely have heat pumps, but the practical question is where the outdoor unit goes and, for leaseholders, whether the freeholder agrees. Garden flats and ground-floor conversions tend to be most straightforward. An installer assesses access and noise during the survey.

Conservation areas and listed buildings

Much of inner London sits in a conservation area. Many heat pump installations are permitted development, but conservation areas and listed buildings often need planning permission, and there are rules about how close the unit can be to a boundary. A local installer who knows your borough handles this as part of the job.

Tight outdoor space

Side returns, light wells and small rear yards are normal in London. Modern units are compact and there's usually a workable spot, but it's worth flagging on the survey so the installer can plan placement and pipe runs.

Every figure here is indicative. Because London homes vary so much street to street, a free MCS heat-loss survey is the only way to turn an estimate into a fixed price — and it's the installer's job to do that, not yours.

London heat pump questions

How much does a heat pump cost in London?

London installations typically run from around £9,000 for a small flat to £19,000 or more for a large house, before the £7,500 grant. Net costs after the grant usually land in the low thousands to around £12,000. The calculator above gives a range for your property type.

Can you fit a heat pump in a Victorian terrace?

Yes — this is one of the most common London installs. The main considerations are finding space for the outdoor unit, sometimes upgrading a few radiators, and improving insulation where it's easy. A heat-loss survey confirms what your specific terrace needs.

Do I need planning permission for a heat pump in London?

Most installations are permitted development, but conservation areas and listed buildings often need planning permission, and there are rules on how close the unit can sit to a boundary. A local installer will know your borough's position and handle it.

Can flats and conversions have heat pumps?

Often yes, though it depends on where the outdoor unit can go and, for leasehold flats, freeholder permission. Ground-floor and garden flats are usually most straightforward. An installer can assess access during the survey.