Nearly 1.5 million UK homes still burn heating oil. On 1 October, the government raised the maximum heat pump grant for those households to £7,500, a 50% increase from the previous £5,000 cap. The move, as reported by Fuel Oil News, targets the homes that face the steepest upfront costs and the highest running bills.
Who qualifies, and who doesn’t
The higher grant applies only to households replacing an oil boiler with an air-source or ground-source heat pump. The standard £5,000 grant still applies for gas-heated homes. Off-grid properties, mostly in rural England, Scotland, and Wales, are the clear winners. Ofgem administers the scheme, and applications opened on 1 November. Eligibility requires a valid Energy Performance Certificate (EPC) with no outstanding recommendations for loft or cavity wall insulation. The grant covers installation costs, but homeowners must use an MCS-certified installer.
What it costs a typical 3-bed semi
A typical oil-heated three-bed semi uses about 18,000 kWh of oil per year. At current oil prices around 6p/kWh, that’s £1,080 annually. A heat pump with a Seasonal Coefficient of Performance (SCOP) of 3.5 would need roughly 5,150 kWh of electricity, at the new price cap of 24.5p/kWh, that’s £1,262. But the heat pump also displaces the oil boiler’s standing charge and maintenance costs. The Energy Saving Trust estimates net savings of £300–£500 a year for most oil-to-heat-pump switches. The grant covers about 60% of the typical installation cost of £12,500, leaving the homeowner with £5,000 outlay. Payback period: roughly 10–14 years.
The EPC impact
Oil boilers typically score an EPC band of D or E, while a well-installed heat pump can lift a property to band B or C, a jump of up to 9 points. That matters for resale value and for landlords, who must meet a minimum EPC rating of C by 2028 under current government proposals. The grant effectively subsidises a future-proofing investment that also cuts carbon emissions by about 4 tonnes per year per household.
But, the installation bottleneck
The catch is supply. The UK has roughly 3,000 MCS-certified heat pump installers, many concentrated in urban areas. Rural oil-heated homes often sit miles from the nearest accredited engineer. The government has pledged £15m for training 10,000 new installers by 2028, but that timeline lags behind the grant surge. Homeowners in the Highlands, for example, report waits of six to nine months for a quote, as reported by BBC Scotland. The grant boost may create demand faster than the industry can meet it.
What to do now
Households on oil heating should check their EPC and arrange a loft insulation top-up if needed, that alone can cut heat loss by 25%. Then contact three MCS-certified installers for quotes. The £7,500 grant is available until 31 March 2027, but early applicants face shorter queues. Apply via the Ofgem portal. If you’re off-grid and still burning oil, this is the best financial incentive you’ll see this decade.
Frequently Asked Questions
No, but the heat pump must replace an existing oil boiler. You can apply before your current boiler fails. The grant covers installation only, not the boiler removal cost.
Yes, but your EPC must show no outstanding recommendations for loft or cavity wall insulation. If those are flagged, you must address them first, or the grant may be refused.
