Are air source heat pumps any good? What owners actually report

The short answer

Yes, according to the people who actually live with one. Nesta's survey of 2,395 heat pump owners, run alongside 1,025 gas boiler owners across England, Scotland and Wales, is the largest study of its kind in the UK, and it found 80% of heat pump owners were very or fairly satisfied with their system, against 70% of gas boiler owners surveyed the same way. That is not a marketing claim; it is what owners said when asked directly, and it holds up alongside the government's own monitored performance data from real installations.

Where the doubt actually sits

The same survey did not paper over the weak points, and the honest picture is more useful for it. The one area where heat pump owners reported clearly lower satisfaction than gas boiler owners was ease of use and control, at 74% against 88% for boiler owners. That gap tracks with a real, well understood cause: heat pump controls and thermostats often work differently to a boiler's, running longer at a lower, steadier output rather than short bursts of high heat, and owners who are not shown how that works during handover tend to fight the system rather than let it run as designed. It is a genuine weakness, and one that a good installation team addresses with proper handover rather than leaving the homeowner to work out.

What the government's own monitoring found

Nesta's survey asks people how they feel about their heat pump. The Department for Energy Security and Net Zero's Electrification of Heat Demonstration Project measured what the hardware actually did, monitoring 742 real heat pump installations across Scotland, north-east England and south-east England, in a genuine mix of property types: 41% detached, 43% semi-detached, 11% mid-terrace and 6% flats, with 68% built before 1980 and at least 53% starting from an EPC rating of C or D. That matters because it is not a study of new-build homes with ideal conditions; it is a study of the housing stock most homes actually are.

The project reported that air source heat pumps can run efficiently even in cold weather, delivering heat at roughly three times the efficiency of a gas boiler, and it found no property type or architectural era that was unsuitable for a heat pump. 85% of participants said they had already recommended, or were likely to recommend, a heat pump to a friend or family member, which is a strong result for a technology still associated in a lot of public conversation with cost and disruption.

Nesta figures from its 2023 owner survey, still the largest UK study of its kind as of September 2026. Electrification of Heat figures from DESNZ-funded reports published December 2024. SCOP figures from the MCS installation database and the Electrification of Heat performance analysis.

Does the UK climate actually suit them?

The concern that a British winter is too cold for a heat pump does not hold up against where the technology is actually most established. Norway, Sweden, Finland and Estonia have the highest rates of heat pump ownership in Europe, and all four run colder winters than the UK. The UK's own average winter temperature in 2024 was above 5C. The engineering case for heat pumps working in genuinely cold climates is settled; what a specific UK installation needs to get right is sizing and flow temperature for the property, not the technology's ability to cope with the weather.

Air source specifically, not heat pumps in general

It is worth being precise about what the evidence above covers. Air source heat pumps, which draw heat from the outside air, made up the large majority of the 742 installations in the Electrification of Heat Demonstration Project, split between low-temperature and high-temperature air source designs, with ground source and hybrid systems making up a smaller share. Ground source heat pumps, which draw heat from a buried loop or borehole, tend to run at higher, more stable efficiency because the ground stays warmer than winter air, but cost roughly double to install and need suitable outdoor space for the loop. For most UK homes without the garden size or budget for ground source, air source is the realistic comparison, and it is the one the owner-satisfaction and performance evidence above is speaking to directly.

What a good installation looks like on paper

Given how much the Nesta and Electrification of Heat evidence points to installation quality rather than the technology itself as the thing that separates a satisfied owner from a disappointed one, it is worth knowing what a competent quote actually contains. It states the property's calculated heat loss in kW, not just the unit's rated output. It names the specific model and its performance at your local design temperature, not only a headline efficiency figure measured under laboratory conditions. It sets out which radiators, if any, are being changed and why. And it includes a proper handover on the controls as part of the job, not as an afterthought once the installation team has left. A quote missing any of these is missing the parts of the process that the evidence says actually decide whether you end up in the 80% or outside it.

What tends to separate a good installation from a disappointing one

• A proper heat loss survey, rather than a unit sized off a rule of thumb, which is what the sizing guidance in system sizing is built around.
• Radiators sized for a lower flow temperature where the existing ones are undersized, covered in do you need new radiators.
• A proper handover on the controls, addressing exactly the ease-of-use gap the Nesta survey found, since a heat pump run like a boiler tends to disappoint whoever is running it that way.
• Reasonable insulation, not perfection, but enough that the property is not losing heat faster than a correctly sized system can comfortably replace it.
• MCS certification on the finished installation, which is also the condition for Boiler Upgrade Scheme eligibility and for a mainstream warranty to be valid.

Running one on cheaper electricity

Because a heat pump's ongoing cost is an electricity bill, the same pairing that helps any electricity-hungry appliance helps a heat pump: an off-peak tariff, and where the roof suits it, on-site generation. A home battery charged overnight on a cheap rate can cover a meaningful share of a heat pump's daytime and evening draw, particularly through the shoulder seasons when heating demand is present but not at its winter peak. Modelling what that would actually save on your own tariff and property takes a few minutes on the battery calculator.

None of this evidence claims a heat pump is the right choice for every household regardless of circumstances. What it does establish, from real owners and real monitored installations rather than marketing copy, is that the technology itself performs well in UK conditions, and that where a heat pump disappoints its owner, the cause is usually traceable to sizing, radiators or handover rather than to the underlying idea being unsound.