Air-to-Air Heat Pump Grant Myths, Checked Against the Source
If you have read a few articles about the air-to-air heat pump grant, you have probably seen at least three different figures and one claim that turns out to be wrong. The scheme is new — air-to-air units only became eligible for the Boiler Upgrade Scheme on 28 April 2026 — so out-of-date blog posts, copied air-to-water numbers and hopeful guesswork are everywhere. This page sets the common myths against what the primary sources actually say, so you can work out whether the grant is real for your home before you speak to anyone.
The short version, as at July 2026: the grant is genuinely live, it is a flat £2,500, it applies in England and Wales only, and it is more restricted than most headlines suggest. Every point below is checked against gov.uk, Ofgem, the amending legislation and HMRC.
Air-to-air heat pump grant myths versus the facts
Each row states the myth roughly as it appears online, then what the official guidance actually says as at July 2026. Two rows are not debunks. One concedes a genuine problem the grant marketing tends to skip, and one knocks down a savings claim that is too good to be true.
| The myth | The fact (as at July 2026) |
|---|---|
| "The air-to-air grant hasn't started — it comes in in 2027." | Wrong. Air-to-air units became eligible for the Boiler Upgrade Scheme on 28 April 2026 under SI 2026/390, and the scheme runs to 2030. The 2027 date people half-remember is when 0% VAT reverts to 5% on 31 March 2027 — a separate thing, per HMRC. |
| "The heat pump grant is £7,500." | For air-to-air it is a flat £2,500 (gov.uk). The £7,500 rate is for air-to-water and ground-source heat pumps only. Air-to-air is deliberately paid less and is also excluded from the £9,000 off-gas oil and LPG uplift. There is one grant per property. |
| "I can get a free air-to-air heat pump through ECO4." | No. ECO4 excludes air-to-air because the unit makes no hot water — only air-to-water heat pumps count as a qualifying renewable system under ECO4, which runs to 31 December 2026. No UK scheme makes an air-to-air unit free: the Boiler Upgrade Scheme is a £2,500 contribution off the installer's quote, not the whole cost. |
| "You only qualify if you are replacing direct electric heaters." | Installer-blog folklore, not in the rules. gov.uk lists the heating you may replace as "oil, gas, electric or LPG". Air-to-air is best suited to electric- and storage-heated homes, but it is not legally limited to them. The real condition is that you replace a fossil-fuel or electric system fully — you cannot keep a gas boiler alongside it, because hybrids are not eligible. |
| "It is really just a subsidy for air conditioning." | The unit must be installed to provide heating; a system bought only for cooling does not qualify, and HMRC applies the same heating test to the 0% VAT. Air-to-air hardware is reversible, so summer cooling comes as a by-product — but the grant is paid for the heating function, verified through an MCS-certified install. |
| "The grant is available right across the UK." | England and Wales only. Scotland has no Boiler Upgrade Scheme, and Home Energy Scotland excludes air-to-air (it must provide 100% of heating and hot water). Northern Ireland has no equivalent grant. In Scotland and NI the only air-to-air support is the 0% VAT (HMRC). |
| "There are plenty of installers ready to fit a grant-funded air-to-air system." (the concede) | Honestly, not yet. The grant is law, but MCS certification for air-to-air is still rolling out through 2026 — certification bodies are still gaining UKAS accreditation, an installer's technical supervisor needs RACHP Level 3, and MCS has set no fixed date. No MCS-certified air-to-air job means no grant, so certified installers are genuinely scarce in mid-2026. The money is real; it is not yet easy to claim. |
| "Switch to air-to-air and cut your heating bills by 70%." (too good to be true) | Treat blanket percentages with suspicion. Against old storage heaters a realistic saving is roughly £500 to £900 a year, not 70% — storage heaters already ran on cheap Economy 7 night units, so the gap is smaller than it looks. Versus mains gas you may save little or nothing: at the July to September 2026 Ofgem cap (electricity 26.11p, gas 7.33p per kWh), a well-run air-to-air system roughly matches gas on running cost. |
Why so many of these myths are circulating
Most of the confusion comes from the calendar. The scheme is only weeks old, so a great deal of the advice online was written for air-to-water heat pumps and had the air-to-air rules bolted on afterwards — which is exactly how the £7,500 figure keeps migrating onto air-to-air pages. Add in writers who assume every grant works like ECO4, and installers who are keen to talk up the money and quiet about the certification bottleneck, and you get a lot of confident, incorrect copy. When a figure looks generous, check whether the source is actually describing air-to-air or has quietly slipped into air-to-water territory.
The grant is live now — but that is only half the story
Two things are true at once, and honest coverage has to hold both. The legislation is in force (28 April 2026, per SI 2026/390), so £2,500 is available today for a qualifying home. Yet the MCS air-to-air certification route is still being built out, so the number of installers who can actually deliver a grant-backed job is small as at July 2026. The sensible response is not to rush a deposit on the strength of a headline, but to confirm your home qualifies, then check that any installer you approach is MCS-certified specifically for air-to-air. A quote that promises the grant without that certification cannot honour it.
"So is the grant even worth pursuing?"
It depends entirely on what you heat with now, and the honest answer splits three ways. If your home runs on storage heaters, direct electric, LPG or oil, then yes — the running-cost gap is real, and £2,500 off a system that also cools in summer is worth chasing. If you are on mains gas and hoping to slash bills, temper your expectations: air-to-air roughly matches gas on running cost, so the case is about comfort, cooling and a low installation price rather than a dramatic saving. And if you want to keep your gas boiler and add air-to-air alongside it, the grant is not for you at all — hybrids are excluded. Knowing which group you are in is more useful than any headline percentage.
What we do, and what we will happily tell you not to do
We are an information hub, not an installer, and we do not sell a brand of kit. That means we have no reason to talk you into a system you will not benefit from. If you are in Scotland, keeping a fossil boiler, or chasing a whole-house off-gas switch that would be better served by air-to-water, we would rather tell you plainly and save you the wasted quotes. For the homeowners who genuinely qualify, we connect you with MCS-certified air-to-air installers — with the grant deducted upfront from the quote, and no obligation to proceed.
Check the facts against your own home
Before you act on anything you have read elsewhere, run it past the numbers for your property. See the full grant conditions and the schemes it does and does not stack with on our grants and funding page, check whether you qualify with the free eligibility checker, and check installed prices on the cost page. When you are ready, you can ask to be matched with a certified installer, or read more on the FAQs. All figures on this page are dated as at July 2026 and drawn from the primary sources linked above.
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Tell us a little about your home and we’ll help you find a genuinely MCS-certified air-to-air installer — the only kind who can secure your £2,500 grant. We’re an independent guide, not an installer, and we don’t sell kit.
- 1. Tell us your situation — your postcode and what you heat with now.
- 2. We sense-check the grant and point you to MCS-certified air-to-air installers near you.
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