Landlord Heat Pump Grants & Funding 2026

The single most common misconception we hear from landlords is that the £7,500 Boiler Upgrade Scheme will help pay for a heat pump in a let building. It will not. That scheme is domestic-only, and it catches a lot of owners out. For heat pumps for landlords the funding picture is different, and in places larger, but it takes a commercial playbook rather than a domestic grant form. This guide lays out the routes that actually apply in 2026, who qualifies for each, and how they fit with the MEES and EPC pressure that pushes most landlords to act in the first place.

Why the Boiler Upgrade Scheme does not apply

The Boiler Upgrade Scheme pays £7,500 towards an air-source or ground-source heat pump, but only in domestic properties in England and Wales, and only up to a capped thermal size (confirm the current threshold and eligible technologies on gov.uk, as BUS terms change). A let commercial building, a building heated as non-domestic plant, or anything above that threshold falls outside it entirely. We include the scheme here only to set expectations clearly, because the assumption that it covers let property leads landlords to under-budget or to assume there is no help at all. Neither is true. The real routes sit below, and we map which of them a building qualifies for before quoting, as set out in our grants and funding guide.

Public Sector Decarbonisation Scheme (PSDS)

If a landlord lets to, or operates within, the public sector, the Public Sector Decarbonisation Scheme is the headline route. Administered by Salix Finance for DESNZ, it funds low-carbon heating, including heat pumps and heat-network connections, for public bodies: NHS trusts, schools, colleges, universities, local authorities and emergency services.

PSDS is generous because it is geared to the extra cost incurred over a straight like-for-like fossil-fuel replacement, and grant sizes on the largest schemes can be substantial. It is competitive and time-limited, with application windows and project completion deadlines that vary by funding round, so timing matters; confirm the current scheme guidance and deadlines on gov.uk. The one hard limit for landlords to note: it is public sector only and does not extend to private commercial buildings.

Industrial Energy Transformation Fund (IETF)

Where a let building serves an eligible industrial process, the Industrial Energy Transformation Fund supports fuel-switching to industrial heat pumps and waste-heat recovery. It covers industrial sites and data centres in England, Wales and Northern Ireland in qualifying SIC codes, manufacturing, recovery and recycling, data centres, and newer sectors including controlled-environment horticulture, industrial laundries and textile renting.

It part-funds eligible costs, with intervention rates, minimum grant sizes and technology-maturity requirements that vary by funding round, so check the current scheme guidance on gov.uk. The fund is time-limited and runs through periodic competition windows, so a landlord with an industrial tenant should plan around those rounds and confirm current deadlines on gov.uk. This is large-scale process and high-temperature heat, not ordinary office or residential heating.

Green Heat Network Fund (GHNF)

A landlord developing or expanding a multi-building scheme, a campus, an estate, or a large mixed-use development, should look at the Green Heat Network Fund. It supports new low-carbon heat networks and the retrofit or expansion of existing ones, using heat pumps, geothermal, water-source or waste heat.

GHNF can part-fund eligible commercialisation and construction costs, and awards on larger schemes can run to substantial sums. Intervention rates, eligibility and the funding-round timetable vary, and the scheme is time-limited, so confirm the current scheme guidance and deadlines on gov.uk. It suits portfolios served from a central energy centre rather than single isolated buildings, and it sits alongside the move of heat networks under Ofgem as the sector’s regulator. For a landlord rolling out across several buildings, this is the route that scales.

Full expensing and the Annual Investment Allowance

For any private landlord taxed in the UK, capital allowances are the dependable backbone of the business case on every qualifying project. A heat pump is qualifying plant and machinery, so a company within UK corporation tax can take full expensing, an uncapped 100% first-year deduction, worth up to 25p of tax saved for each pound spent at the 25% corporation-tax rate (confirm the current rules and rate on gov.uk).

A sole trader or partnership uses the Annual Investment Allowance instead, which relieves up to a million pounds of qualifying spend at 100%. Wiring and ancillary works may fall outside full expensing but usually still qualify for the Annual Investment Allowance. Treatment varies by structure and by the exact works, so confirm it with your accountant in every case. The figures here are illustrative of the relief available, not tax advice.

How funding fits the MEES and EPC picture

Funding rarely stands alone for a landlord. It works hardest when it is set against the cost of staying lettable. As MEES and EPC thresholds tighten on lettings, a building that fails to improve becomes harder to let, value and finance, so part of the case for a heat pump is protecting rental income and asset value, not just chasing a grant.

That changes how a landlord should sequence funding across a portfolio. The buildings closest to a compliance cliff or a boiler failure are usually tackled first, because that is where capital protects income soonest, and the first building also sets the funding evidence base, the consumption data, the survey approach, the modelled business case, for the rest. A programme therefore accelerates as it goes, with each application building on the last.

Putting a funding stack together

In practice a landlord rarely relies on a single source. A public-sector occupier might combine PSDS with the building’s own capital budget. A private commercial landlord might lean on full expensing as the backbone and layer any sector-specific grant on top. A multi-building owner might anchor a scheme on GHNF and use capital allowances on the parts that fall outside it.

The right stack depends on who occupies the building, how it is heated, and the corporate structure that owns it. We map which routes a building qualifies for before quoting, and build the application around the project rather than treating funding as an afterthought. A hybrid heat pump retrofit often makes the funded case easier to approve, because a smaller heat pump paired with a peaking boiler keeps capital down while still cutting carbon 70 to 90%.

Next step

Funding follows the engineering, not the other way round, so the most useful first move is a feasibility built from your building’s own meter data. Request a quote and we will model the cost, payback and carbon, then map the funding routes the building actually qualifies for, before you commit any capital. For the wider cost picture and how tax relief shortens payback, see our cost guide.