Air Source Heat Pump Costs in 2026: Prices, Savings and Grants

How much does an air source heat pump cost in 2026? The question every homeowner asks first — and the honest answer is that it varies a lot by property. As a rough guide, UK installers commonly quote somewhere between £7,000 and £13,000 for a full air source heat pump installation, depending on the size of your home, the model chosen and how much supporting work (radiators, pipework, hot water cylinder) is needed. But the number that actually matters is what you pay after grants and tax relief. In 2026, three things dramatically change the maths: The Boiler Upgrade Scheme grant of £7,500 for air source heat pumps, paid directly to your installer A £9,000 uplift for eligible off-gas-grid oil or LPG homes in England and Wales, available until 31 March 2027 0% VAT on qualifying energy-saving installations until 31 March 2027 Put together, the out-of-pocket cost for many households is far lower than the headline installation price suggests. Important: Fairway Energy is an independent eligibility-check service. We are not the government, an official grant administrator, or an installer. What affects the price? Two homes on the same street can get very different quotes. Here's what drives the cost: 1. Size of your home and its heat demand Bigger homes need bigger (pricier) heat pumps. A proper installer carries out a heat loss assessment — measuring how much heat your home loses — and sizes the unit accordingly. Anyone who quotes without one is guessing. 2. Your existing radiators and pipework Heat pumps run at lower flow temperatures than gas boilers, so they work best with larger radiators or underfloor heating. If your radiators are small or your pipework is narrow microbore, upgrades add to the bill — but they're often essential for the system to work efficiently. 3. Hot water cylinder Most air source heat pump installations need a dedicated hot water cylinder. If you have a combi boiler with no cylinder, factor one in. 4. Insulation levels A heat pump in a draughty home is like heating with the windows open. Good loft and wall insulation doesn't just cut the size (and cost) of the heat pump you need — it cuts your running costs for decades. Some households tackle insulation first, sometimes with ECO4 funding. 5. The model and installer As with boilers, premium brands cost more. And installer quotes vary — always get two or three written quotes from MCS-certified installers (certification is mandatory for the BUS grant). Grants and support available in 2026 Boiler Upgrade Scheme — £7,500 The headline support: £7,500 towards an air source heat pump for eligible homeowners in England and Wales. Your MCS-certified installer applies to Ofgem on your behalf, and the grant is paid directly to them — you simply pay the balance. Since the EPC requirement was removed in April 2026, more homes are eligible than before. Off-gas-grid uplift — £9,000 If your home is off the gas grid and heated by oil or LPG, you may qualify for an uplifted grant of £9,000 for a qualifying heat pump. This uplift runs until 31 March 2027 and is subject to eligibility and property assessment. For rural households facing high oil costs, this is the single biggest saving on offer. 0% VAT until March 2027 Qualifying energy-saving installations — including heat pumps — benefit from 0% VAT until 31 March 2027. On a five-figure installation, that alone saves a four-figure sum. What about air-to-air heat pumps? The Boiler Upgrade Scheme also covers air-to-air heat pumps at £2,500. These provide heating (and cooling) via wall-mounted units rather than radiators, suiting some properties better than others. Worth discussing with an installer if your home doesn't suit a standard air-to-water system. Running costs: are heat pumps cheaper to run? This is where it gets nuanced. A heat pump's efficiency is measured by its COP (Coefficient of Performance) — roughly, how many units of heat you get per unit of electricity. A well-installed system typically achieves a seasonal COP of around 2.5 to 3.5, meaning 2.5–3.5 kWh of heat for every 1 kWh of electricity. Whether that beats your current heating depends on: What you're replacing. Swapping from expensive oil, LPG or direct electric heating usually saves the most. Swapping from mains gas is closer — gas is still cheap per kWh, so savings depend on your tariff and system efficiency. Your electricity tariff. Heat-pump-friendly time-of-use tariffs can cut running costs significantly. Your insulation. A well-insulated home needs less heat, full stop. How well it's installed. A poorly designed system with undersized radiators will cost more to run and leave you cold. This is why the heat loss survey and MCS certification matter so much. Be sceptical of anyone promising exact savings figures without surveying your home. Honest installers talk in ranges and explain their assumptions. Air source heat pump vs gas boiler: the 2026 comparison Upfront cost: a gas boiler replacement is far cheaper upfront — but the £7,500 BUS grant (plus 0% VAT, plus the possible £9,000 uplift) closes the gap dramatically for eligible homes. Running costs: depends on tariffs and insulation, as above. Oil and LPG households usually see the biggest wins. Carbon: heat pumps cut heating emissions substantially, especially as the grid gets greener. Future-proofing: gas boilers face an uncertain long-term future; heat pumps are where policy and grants are pointing. Lifespan: heat pumps typically last 20–25 years with servicing — comparable to or better than boilers. How to get a heat pump installed: the steps Check you may qualify for BUS support — England or Wales, you own the home, existing fossil fuel or electric heating, no prior BUS grant for the property. Consider insulation first if your home is draughty — it shrinks the system you need and your future bills. Get 2–3 quotes from MCS-certified installers, each including a heat loss assessment and a clear after-grant price. Your installer applies to Ofgem for the BUS grant on your behalf. Installation — typically a few days, plus any radiator or cylinder upgrades. You pay the balance after the £7,500 grant (or £9,000 uplift) is paid to the installer. FAQs Do heat pumps work in cold weather? Yes. Modern air source heat pumps work well below freezing — they're widely used in Scandinavia. Efficiency dips in very cold snaps, but a correctly sized system handles a UK winter. Do I need planning permission? In most cases, air source heat pumps fall under permitted development rights in England and Wales, provided conditions on size, placement and noise are met. Listed buildings and conservation areas are different — check with your council. Are they noisy? Modern units are quieter than most people expect — roughly the level of a quiet conversation at a few metres. Installers must meet noise requirements under permitted development rules. Can I get a heat pump in a flat? Sometimes, but it's trickier — you need somewhere for the outdoor unit, and leasehold/freeholder permissions. Discuss it with an installer early. What if I'm off the gas grid? You're potentially the biggest winner: the £9,000 uplift until 31 March 2027, plus typically the largest running-cost savings versus oil or LPG. Check your eligibility soon — the uplift is time-limited. What does installation week look like? Knowing what to expect removes most of the stress. A typical air source heat pump installation runs like this: Day 1: old boiler out, outdoor heat pump unit mounted, groundwork and pipe runs started Days 2–3: indoor work — hot water cylinder fitted, radiators swapped or upgraded, pipework adapted Days 4–5: system filled, commissioned and balanced; controls set up; installer walks you through operating it You'll be without heating and hot water for part of the installation — usually a day or two. Good installers schedule this thoughtfully (and it's one reason many people choose spring or autumn rather than midwinter). Expect some disruption: floorboards lifted, new pipe runs, and a fair amount of coming and going. Afterwards, the installer should leave you with manuals, warranty documents and MCS certification paperwork — keep all of it. Looking after your heat pump Heat pumps are low-maintenance, but not no-maintenance: Annual service by a qualified engineer keeps the warranty valid and efficiency high Keep the outdoor unit clear of leaves, snow and clutter so air flows freely Learn the controls — heat pumps like steady, low-and-slow running. Cranking the thermostat up and down like a gas boiler wastes energy Check your electricity tariff yearly — heat-pump-friendly tariffs change, and the right one can save hundreds Check if you qualify Between the £7,500 Boiler Upgrade Scheme grant, the £9,000 off-gas-grid uplift and 0% VAT, 2026 is as good as it gets for heat pump support — but the uplift and VAT relief both end in March 2027. Every home is different, so the first step is a quick check. Fairway Energy offers a free 60-second eligibility check. We're an independent service — not the government, not an installer, no obligation. 👉 Start your free eligibility check 💬 Prefer WhatsApp? Message us on +44 7367 065216