How-To · Updated July 2026
The £2,500 Air-to-Air Heat Pump Grant: What’s Real in 2026
You may have seen headlines about a “£2,500 grant” for air-to-air heat pumps — the wall-mounted, air-conditioning-style units that heat and cool a room. Here is the honest position for July 2026: that specific figure comes from a proposed extension to government heat-pump support that has been consulted on and widely reported, but it is not yet a live, universal grant you can apply for today. What is real right now are three genuine routes — ECO4 for eligible low-income households, 0% VAT on energy-saving materials, and the low upfront cost of the units themselves. This guide separates the headline from the facts and shows you exactly what you can claim now.
Quick answer: As of July 2026 there is no dedicated, live “£2,500 air-to-air heat pump grant” you can simply apply for. The £2,500 figure has been reported in connection with a proposed extension of government heat-pump support to cover air-to-air (air-conditioning-style) units — aimed at homes where a standard air-to-water heat pump is impractical. The Boiler Upgrade Scheme’s £7,500 grant covers air-to-water and ground-source heat pumps only; air-to-air does not qualify. What you can use today: ECO4 (if you receive qualifying benefits), 0% VAT on installation, and the units’ low upfront cost of roughly £1,500–£3,000 per unit.
Is the £2,500 air-to-air heat pump grant real?
Short version: the number is real as a reported/proposed figure — the grant is not yet a live scheme you can claim. Over 2025–2026 there has been an active policy conversation about widening heat-pump support beyond air-to-water and ground-source systems. Air-to-water heat pumps suit a large share of UK homes, but not all — some flats, small terraces, park homes and properties without space for a hot-water cylinder or large radiators are poorly matched to them. Air-to-air units (essentially reversible air-conditioning) have been floated as a lower-cost alternative for exactly these homes, and a support figure “around £2,500” has been reported in that context.
That is very different from money sitting in an account waiting for your application. A proposal or consultation can change substantially, be delayed, or not proceed at all. So the responsible thing — and the reason you should be wary of any installer claiming to “get you the £2,500 grant today” — is to treat it as a policy direction to watch, not a live entitlement. Below is where each relevant scheme genuinely stands.
Where each scheme stands in July 2026
| Route | Covers air-to-air? | Status (July 2026) | Headline value |
|---|---|---|---|
| “£2,500 air-to-air grant” | That is the point of it | Proposed / reported — not a live, open scheme | ~£2,500 (reported figure, subject to change) |
| Boiler Upgrade Scheme (BUS) | No | Live (England & Wales) | £7,500 — air-to-water & ground-source only |
| ECO4 | Possible, case-by-case | Live — runs to March 2026, successor expected | Can fund heating measures for eligible households |
| 0% VAT relief | Yes, where it applies | Live | 0% VAT on qualifying installs (vs 20%) |
| Home Energy Scotland grant/loan | Assessed differently | Live (Scotland) | Grants + interest-free loans for renewables |
Scheme rules, budgets and eligibility change. Always confirm current status on GOV.UK, Ofgem (ECO4) or Home Energy Scotland before committing. We update this table as policy moves.
What is an air-to-air heat pump?
An air-to-air heat pump takes heat from the outside air and moves it directly into the air inside your home — blown through wall-mounted or ceiling indoor units. If that sounds like air conditioning, it is: a modern reversible air-conditioner is an air-to-air heat pump. In summer it cools; in the colder months it runs in reverse to heat. A typical set-up is one outdoor condenser feeding one or more indoor “heads,” each controlling a room or zone.
The crucial distinction for grants is what it does and doesn’t heat. Air-to-air heats rooms. It does not heat your domestic hot water — you keep a separate water heater, immersion or combi for taps and showers. That single fact is why it is treated differently from an air-to-water heat pump, which feeds radiators, underfloor heating and a hot-water cylinder, effectively replacing a gas boiler outright.
Why the Boiler Upgrade Scheme (£7,500) does not cover air-to-air
The Boiler Upgrade Scheme (BUS) is the flagship England & Wales grant for low-carbon heating. It offers £7,500 off an air-to-water heat pump or a ground-source heat pump, and around £5,000 toward a biomass boiler in eligible rural properties. It is delivered through your MCS-certified installer, who applies for and deducts the grant — you never handle the paperwork or receive cash directly.
Air-to-air units are explicitly excluded. The scheme’s logic is that it funds a full replacement for a fossil-fuel central heating system — something that heats your whole home and your hot water to a defined standard. Because air-to-air does not produce hot water and is typically installed room-by-room rather than as a whole-home wet system, it falls outside BUS eligibility. This is a rule, not an oversight, and it is unlikely to change without the separate policy route discussed above.
So if a company tells you they can put your air-conditioning-style unit through the Boiler Upgrade Scheme, that is a red flag. It cannot be done. For the genuine BUS route and current figures, see our heat pump grants guide, and if an air-to-water system is actually viable for your home, that £7,500 is almost always the better deal.
Watch out: No legitimate scheme in July 2026 pays a grant specifically for air-to-air heat pumps as a universal entitlement. If you are told otherwise, ask which named scheme, get it in writing, and verify it on GOV.UK before signing anything or paying a deposit.
ECO4: the real grant route for eligible households
The Energy Company Obligation (ECO4) is the scheme most likely to put an air-to-air heat pump within reach at little or no cost — but only for a specific group. ECO4 obliges larger energy suppliers to fund energy-efficiency and heating improvements in low-income and vulnerable households, prioritising the least efficient homes (typically EPC bands D–G). It runs to March 2026, with a successor scheme widely expected to follow.
Unlike BUS, ECO4 is not tied to one heating technology. It funds a package of measures based on a whole-house assessment. In some cases — particularly homes currently heated by expensive electric storage heaters, or homes where a wet heat-pump system is impractical — an air-to-air (air source) heating solution can be included as part of that package. It is assessed on a case-by-case basis by the retrofit assessor, not guaranteed.
Typical ECO4 eligibility signals
You are more likely to qualify if your household receives one or more of these:
- Universal Credit
- Pension Credit (Guarantee or Savings Credit)
- Income-based Jobseeker’s Allowance (JSA) or Income-related Employment & Support Allowance (ESA)
- Income Support
- Child Tax Credit / Working Tax Credit
- Housing Benefit or Pension Credit Savings Credit
Some households who don’t receive these can still qualify through ECO4 Flex — a local-authority route that lets councils refer residents on low incomes, with health conditions made worse by cold, or in fuel poverty, even without a listed benefit. It is always worth checking with your council.
| ECO4 factor | What helps you qualify |
|---|---|
| Household income / benefits | Receiving a qualifying means-tested benefit, or referred via ECO4 Flex |
| Current heating | Inefficient electric (storage heaters), or a home poorly suited to air-to-water |
| Property efficiency (EPC) | Lower bands (D–G) are prioritised for the biggest improvements |
| Tenure | Owner-occupiers and (with landlord consent) private tenants can apply |
The grant is delivered through the energy company’s approved installer network and, where you qualify fully, can cover most or all of the cost. Because provision is discretionary and technology depends on the assessment, treat air-to-air under ECO4 as possible where suitable rather than automatic.
0% VAT relief on energy-saving materials
Everyone installing a qualifying energy-saving measure in a residential property in Great Britain currently benefits from 0% VAT on the installation — down from the standard 20%. This relief covers a defined list of energy-saving materials and, importantly, includes air-source heat pumps. Where an air-to-air heat pump is installed as an energy-saving heating measure by a VAT-registered installer, the relief can apply, cutting a meaningful slice off the bill.
On a £3,000 install, moving from 20% to 0% VAT is a saving of roughly £500. You don’t apply for anything — a properly registered installer simply charges the reduced rate on eligible work. The relief is legislated to run until 31 March 2027, after which it is scheduled to revert to a reduced 5% rate unless extended.
Tip: Ask any quoting installer to confirm in writing that the 0% VAT rate applies to your job and that it’s reflected in the price. If a quote shows 20% VAT on an eligible energy-saving install, query it.
Air-to-air costs & value in 2026
The reason air-to-air keeps coming up in the grant conversation is simple: it is far cheaper upfront than an air-to-water system. A single-room (single-split) unit supplied and fitted typically runs £1,500–£3,000. Multi-room systems that heat several zones from one outdoor unit rise with each indoor head. Compare that with a whole-home air-to-water install at £8,000–£14,000 before the £7,500 BUS grant.
Typical installed costs (2026)
| System | What it covers | Typical installed cost | Grant support |
|---|---|---|---|
| Single-split air-to-air | One room / zone | £1,500 – £3,000 | 0% VAT; possibly ECO4 if eligible |
| Multi-split air-to-air (2–3 rooms) | Several rooms, one outdoor unit | £3,500 – £7,000 | 0% VAT; possibly ECO4 if eligible |
| Multi-split air-to-air (4–5 rooms) | Most of a home’s living space | £7,000 – £12,000 | 0% VAT; possibly ECO4 if eligible |
| Air-to-water heat pump | Whole home + hot water | £8,000 – £14,000 | BUS £7,500 (if eligible) |
Prices vary by home size, brand, number of indoor units, electrical work and access. Always compare at least three quotes.
Running costs matter as much as the sticker price
Air-to-air heat pumps are efficient — a good unit delivers around 3–4 units of heat per unit of electricity (a seasonal COP/SCOP of roughly 3–4). That makes them dramatically cheaper to run than direct electric heaters and often competitive with gas per unit of useful heat, especially for heating one or two rooms you actually use. The catch is that they run on electricity, which per kWh costs more than gas, and they don’t solve hot water. So they shine as a targeted, low-upfront solution — a flat, a home office, a hard-to-heat extension, or a property off the gas grid — rather than a like-for-like boiler replacement.
Who actually benefits from air-to-air?
Air-to-air is a genuinely smart choice for some homes and a poor fit for others. You are a strong candidate if:
- You have no space for a hot-water cylinder or large radiators. Small flats, terraces and park homes where a wet system is impractical.
- You want heating and cooling. One unit covers cold winters and increasingly hot UK summers.
- You heat with expensive direct electric now. Swapping storage or panel heaters for air-to-air can cut running costs sharply.
- You’re off the gas grid. Oil, LPG and electric-only homes often see the biggest savings.
- Budget is tight upfront. A £1,500–£3,000 single unit is far more accessible than a five-figure wet system.
- You may qualify for ECO4 and want a heating improvement funded through it.
It is a weaker fit if you want to fully replace a gas boiler including hot water, if you’re chasing the £7,500 BUS grant (for which you’d need air-to-water), or if wall-mounted indoor units aren’t acceptable in your rooms. If air-to-water is viable for your home, it usually wins once the BUS grant is applied.
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How to prepare and get quotes
Because there is no single “£2,500 grant” button to press, the practical path is to line up the real support that applies to you and get properly costed quotes. Here’s the order that works:
- Check ECO4 eligibility first. If your household receives a qualifying benefit (see above) or you’re in fuel poverty, apply through your energy supplier or ask your council about ECO4 Flex. If you qualify, this is your biggest lever.
- Confirm the technology fits. Decide whether you genuinely want air-to-air (room heating + cooling, no hot water) or whether air-to-water — and the £7,500 BUS grant — is realistic for your home.
- Get an EPC and note your current heating. An up-to-date Energy Performance Certificate helps with ECO4 and gives installers accurate load information.
- Insist on 0% VAT. Use a VAT-registered installer and confirm the reduced rate is applied on the quote.
- Compare at least three quotes. Check the unit brand, SCOP efficiency, number of indoor heads, electrical work, warranty and aftercare — not just the headline price.
- Verify any grant claim in writing. If an installer references a scheme, get the named scheme and reference in writing and check it on GOV.UK, Ofgem or Home Energy Scotland.
Want to start with quotes? Our free tool matches you to vetted local installers in about 60 seconds — compare heat pump quotes here. Got a specific question about your property first? Ask our experts a free question and a qualified professional will reply.
Keep watching the policy: If the proposed air-to-air support (the “£2,500” figure) is confirmed and opens for applications, it will be announced on GOV.UK and delivered through accredited installers — exactly the network we already connect you to. Getting matched now means you’re ready to move the moment anything goes live.
Air-to-air heat pump grant FAQs
There is no dedicated, live, universal grant specifically for air-to-air heat pumps you can simply apply for in July 2026. The widely reported “£2,500” figure relates to a proposed extension of government heat-pump support and is not yet an open scheme. What genuinely exists now: ECO4 (which can fund heating measures for eligible low-income households and may include an air-to-air solution where suitable), and 0% VAT on qualifying installs. Treat the £2,500 as a policy proposal to watch, not money you can currently claim.
No. The Boiler Upgrade Scheme’s £7,500 grant covers air-to-water and ground-source heat pumps only (plus biomass in some rural cases). Air-to-air units are explicitly excluded because they heat room air rather than providing whole-home wet central heating and hot water. Any installer claiming to put an air-to-air unit through BUS is mistaken — it cannot be done.
Possibly — on a case-by-case basis. ECO4 funds heating and efficiency measures for low-income and vulnerable households, and in some cases an air-source (air-to-air) heating solution can form part of the funded package, particularly where a wet heat-pump system is impractical or the home currently uses inefficient electric heating. You’ll usually need to receive a qualifying means-tested benefit, or be referred by your council under ECO4 Flex. The final technology is decided by the retrofit assessment, so it is not guaranteed.
For the right home, yes. Air-to-air is worth it if you want efficient heating and summer cooling, have no space for a cylinder or big radiators, currently use expensive direct-electric heating, or are off the gas grid — and if a low upfront cost (£1,500–£3,000 per unit) matters. It’s less compelling if you want to fully replace a gas boiler including hot water, or if you could instead get an air-to-water system with the £7,500 BUS grant. Running costs are low per unit of heat but you’ll still need a separate hot-water solution.
Air-to-air moves heat directly into room air via wall or ceiling units — like reversible air conditioning — and does not heat your hot water. It’s cheaper upfront (£1,500–£3,000 per unit) but doesn’t qualify for BUS. Air-to-water heats water for radiators, underfloor heating and a hot-water cylinder, replacing a gas boiler outright; it costs more (£8,000–£14,000) but qualifies for the £7,500 Boiler Upgrade Scheme. Choose air-to-air for targeted room heating/cooling and low upfront cost; choose air-to-water for a whole-home boiler replacement with the biggest grant.
Where the install qualifies as an energy-saving measure and is carried out by a VAT-registered installer in Great Britain, you currently pay 0% VAT instead of 20% — a saving of roughly £500 on a £3,000 job. You don’t apply for anything; the installer charges the reduced rate on eligible work. This relief is legislated to run until 31 March 2027, then scheduled to move to a reduced 5% rate unless extended. Ask your installer to confirm the 0% rate is reflected in your quote.
A single-room (single-split) unit supplied and fitted typically costs £1,500–£3,000. A multi-split system heating two or three rooms from one outdoor unit runs roughly £3,500–£7,000, and four or five rooms £7,000–£12,000. Costs depend on your home, the brand, the number of indoor units, electrical work and access, so compare at least three quotes.
Written by the BestBuilders Editorial Team · Reviewed by an MCS-registered heat pump installer · Last updated: July 2026.
How we produced this guide: Scheme details are drawn from GOV.UK (Boiler Upgrade Scheme and VAT relief on energy-saving materials), Ofgem (Energy Company Obligation / ECO4) and Home Energy Scotland, cross-checked against current installer pricing. Where a scheme is proposed rather than live — including the reported £2,500 air-to-air figure — we state its status plainly and do not present it as an available grant. Always confirm current eligibility with the relevant body before committing.
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