Heat Pump Grants for Landlords: BUS Rules After 28 April 2026

The Boiler Upgrade Scheme (England and Wales) (Amendment) Regulations 2026 came into force yesterday, on 28 April 2026, and they change the maths for every landlord with a property below EPC C. The grant for an air-to-water heat pump stays at £7,500. A new £2,500 grant covers air-to-air heat pumps for the first time. The EPC eligibility requirement, which previously locked out about a third of older rental stock, has been scrapped. And the scheme now runs to 2030, deliberately aligned with the 1 October 2030 deadline for all rental properties to reach EPC C. If you have ever looked at heat pump quotes and decided the BUS rules were too restrictive to bother, the answer changed this week.

Three numbers to anchor the analysis. The full installed cost of an air-source heat pump in a typical three or four-bed UK property runs £10,500 to £13,500 according to consumer cost data published in early 2026. With BUS, that drops to roughly £3,000 to £6,000 of landlord capital. There is no VAT on domestic heat pump supply and installation until March 2027, an HMRC concession worth roughly £2,000 on a typical job. Stack those three together and the net outlay for compliant heating in a small house can land below £4,000 if you move before the VAT relief expires.

What actually changed on 28 April 2026?

Four substantive amendments, each with practical consequences. The EPC requirement is removed entirely. Where no EPC is on file, the installer must instead supply alternative evidence of the existing heating system, typically a recent utility bill plus photographs. This is the biggest shift, because it unlocks properties that previously failed the eligibility test. Older Victorian terraces with poor insulation, properties mid-renovation, and rentals between EPC assessments can now apply.

Air-to-air heat pumps become eligible for a £2,500 grant in domestic properties only. These are the wall-mounted units more commonly known as air conditioning, but reversed for heating. They are cheaper to install than air-to-water systems, around £4,000 to £8,000 fully fitted, and a good fit for serviced accommodation, smaller flats and properties without an existing wet central heating system to retrofit.

The scheme is extended to 31 March 2030. That is a deliberate policy alignment with the EPC C deadline, and it removes the cliff-edge that previously expired the scheme in March 2028. The installer definition is now formally tied to MCS certification, which is what most reputable installers already hold but is now a hard requirement rather than guidance.

Why removing the EPC requirement is the change that matters

Before this week, a landlord wanting BUS funding needed an EPC dated within the last ten years showing no outstanding loft or cavity wall insulation recommendations. Industry surveys in 2025 estimated this filter excluded 30 to 40% of pre-1930s housing stock, which is precisely the segment most in need of a heating upgrade. The new rules accept "alternative evidence" defined by Ofgem as a utility bill from the last six months, photographs of the existing heating system, and a confirmation from the MCS-certified installer.

The practical effect is that older properties, the ones with a 1980s back boiler in a Yorkshire stone cottage or an electric storage heater in a 1960s ex-council flat, can now apply directly. This was the segment most exposed to the 2030 deadline because the gap between current rating and EPC C is widest in older stock. The government clearly read the room: blocking grants from the properties most needing them was self-defeating.

How much can a landlord actually claim?

Grant values are paid directly to MCS-certified installers, who deduct them from the invoice. You never see the cash, you just pay the net. Current rates from 28 April 2026 are £7,500 for air-to-water heat pumps, £7,500 for ground-source heat pumps, £5,000 for biomass boilers in eligible rural off-gas properties, and the new £2,500 for air-to-air heat pumps. Each property is limited to one grant per scheme period.

For a typical buy-to-let, the realistic stack on an air-to-water system looks like this. Quote of £12,000 from an MCS installer. £7,500 BUS grant. Zero VAT under the domestic supply concession. Net cost to the landlord around £4,500. Add a £1,500 hot water cylinder if the existing one is undersized, and a few hundred pounds for radiator upgrades on a couple of rooms, and you are still well under £7,000 all-in for a system that should last fifteen years and lift the EPC by one to two bands.

For air-to-air, the maths is tighter but still works. A £6,000 installation drops to £3,500 net after the new £2,500 grant. The trade-off is no domestic hot water, so the property still needs an electric immersion or solar thermal arrangement. This makes air-to-air more useful in HMOs with shared bathrooms on a separate heating circuit, or in serviced accommodation where guests rarely bath in the unit they sleep in.

Should landlords actually do this?

Three honest answers depending on your situation. For a property already at EPC D or above with a working gas boiler less than ten years old, no. The economics do not work, and the 2030 deadline can usually be met with cheaper interventions: loft insulation top-up, hot water cylinder upgrade, smart thermostats. Save the BUS application for the property that actually needs structural heating change.

For a property below EPC E or with a failing gas boiler facing replacement anyway, yes. The replacement decision is binary, and the post-grant cost gap between a £3,000 combi swap and a £5,000 net heat pump is small enough that the EPC uplift, future-proofing, and tenant appeal usually justify the difference. Tenant interest in low-energy heating has risen sharply, with rental listings mentioning heat pumps commanding 5 to 8% rent premium in early 2026 according to Rightmove data.

For a property in serviced accommodation or short-let use, air-to-air is now genuinely interesting. Guests want temperature control, the cooling function is a selling point in summer, and the £2,500 grant offsets most of the installation premium over a basic electric heater retrofit. Read our short-term let register guide for the wider compliance picture if you operate in this segment.

The 2030 EPC C compliance maths

The Warm Homes Plan confirmed in late 2025 that all rental properties in England must reach EPC C by 1 October 2030, with a £10,000 spending cap per property and lower caps for homes valued under £100,000. Improvements made from October 2025 count towards the cap, so heat pump installation now is fully creditable. A landlord who installs a £4,500 net-cost heat pump in 2026 has £5,500 of headroom left for insulation, glazing or controls before hitting the cap.

This matters because the alternative routes to compliance are getting tighter. EPC certificates issued before October 2029 remain valid until expiry even if they extend past 2030, but the assessment methodology itself is changing. The new Home Energy Model replaces the cost-based A to G rating with a multi-dimensional score, and the consensus among assessors interviewed in 2026 trade press is that the new model will be tougher on properties relying on gas heating. A heat pump installed under the current rules is one of the few interventions guaranteed to score well under both methodologies.

Our earlier analysis of the EPC rule changes covers the new Home Energy Model methodology in detail. Read it before you commission an EPC assessment in late 2026, because timing matters.

The tax angle most landlords miss

Heat pump installation in a rental property is treated as a capital improvement, not a repair. That means the cost is not deductible against rental income in the year incurred. It is added to the property's base cost for capital gains tax calculation when the property is eventually sold. For a landlord owning through a limited company, the situation is better: capital allowances may apply to certain plant and machinery components, and the company can deduct the depreciation over time.

This is one reason the corporate ownership shift matters more than ever. A £4,500 net heat pump cost held personally is locked away until disposal. The same £4,500 inside a company structure flows through the P&L over the asset's useful life, smoothing the tax position. Speak to an accountant before signing the installation contract, because the structure determines the cash treatment.

What to do this week

If you have a property below EPC C, get three MCS-certified installer quotes this month. Heating contractors are quoting two to four-week lead times for surveys as of late April, but installation slots in summer are filling fast. The 0% VAT relief expires 31 March 2027, which sounds far away but the typical end-to-end timeline from first quote to installed system is three to five months including planning, parts and trades scheduling. Booking by autumn 2026 is the realistic deadline for VAT-free work.

Use a structured refurb planner to model the heat pump cost against the wider EPC compliance budget. The planner builds in BUS grant assumptions, VAT treatment and capital allowances so you see the true net cost rather than the headline quote. Then check the result against the £10,000 per-property spending cap to confirm you have room for any other interventions you might need.

The 2030 EPC C deadline is no longer a distant problem. It is four years away, and the cheapest path to compliance just got cheaper this week. The landlords who act in the next twelve months will lock in BUS grants, VAT relief, and pre-deadline assessment timing. Those who wait will be applying alongside half the rental sector in 2029, when installer capacity will be the binding constraint and the grant pot may already be exhausted. The rules changed yesterday in the landlord's favour. The window to take advantage opens now and starts closing fast.