No sales pitch about saving the planet. If you heat with oil, you already know the real problems: the tank that needs watching, the price that jumps every time something happens on the other side of the world, the minimum-order deliveries, and a boiler that always seems to fail in the coldest week of January. A properly designed heat pump fixes all four — and for the next nine months the government will pay £9,000 of the cost of switching. Here's the whole picture, numbers included.
Why the July 2026 Uplift Exists — and Who Qualifies
The Boiler Upgrade Scheme has paid £7,500 towards a heat pump since 2023. In April 2026 the government announced a temporary uplift to £9,000 for homes heated by oil or LPG, running from 21 July 2026 to 31 March 2027. The logic is straightforward: oil and LPG are the most expensive and most carbon-intensive ways to heat a home, off-gas-grid households have no cheaper mains alternative, and rural areas like North Buckinghamshire are full of exactly these houses. The uplift is the government paying extra to move the hardest-to-switch homes first — and it's time-limited by design.
You're likely to qualify if all of the following are true: you own the property (your home, a second home, or one you let); it's in England or Wales and currently heated by an oil or LPG boiler; it has a valid EPC with no outstanding recommendations for loft or cavity wall insulation; and the heat pump fully replaces the oil or LPG system. There's no income test and no requirement to be on benefits — this is not one of the means-tested schemes. We check every condition at the survey before you commit to anything.
Full eligibility detail, edge cases and dates are in our £9,000 grant guide and on the Boiler Upgrade Scheme hub.
Oil vs Heat Pump: Running Costs for a Typical 4-Bed Rural Home
The honest way to compare heating costs is pence per kilowatt-hour of heat delivered into the house, after boiler or heat pump efficiency. Heating oil at around 62p/litre holds 10.35 kWh per litre, but a real-world oil boiler delivers roughly 85% of that — so oil heat costs about 7–8p/kWh. A heat pump turns each kWh of electricity into 3.5–4 kWh of heat:
| System | Cost per kWh of heat | Cost per year |
|---|---|---|
| Oil boiler, 85% efficient @ 62p/L | ~7.0–8.0p | ~£1,550–£1,750 |
| Heat pump, SCOP 3.5 @ 24.5p/kWh (standard tariff) | ~7.0p | ~£1,540 |
| Heat pump, SCOP 3.5 @ 18p/kWh (heat pump tariff) | ~5.1p | ~£1,130 |
| Typical saving vs oil (heat pump tariff) | — | ~£400–£600/yr |
LPG homes save more: LPG heat typically costs 10–12p/kWh delivered, so the same house saves £1,000+/yr on a heat pump tariff.
Read that table straight: on a standard electricity tariff, a well-designed heat pump roughly matches oil. The savings come from two places — a dedicated heat pump tariff, which several major suppliers now offer, and the things the table can't show: no more 500-litre minimum deliveries on a card payment, no price spikes in a cold snap (electricity is price-capped; heating oil is not), no tank theft or leak risk, and no burner service parts. And if the design is poor the heat pump loses to oil — which is why the SCOP number on your quote matters more than the brand on the box. The line-by-line arithmetic, including worked LPG figures, is in our running costs vs oil guide, and if you're weighing this against simply buying another oil boiler, the heat pump vs oil boiler head-to-head puts every factor in one table.
What Happens to Your Oil Tank
The grant requires the oil system to be fully decommissioned — you can't keep the boiler as a backup. That includes the tank, and there's a right way to do it. Any remaining oil is measured and can usually be sold back to a local supplier or transferred to a neighbour before removal. The tank is then drained, degassed and either cut up and taken away or, for steel tanks, removed whole. We use OFTEC-registered contractors for this, the same standard that governed the tank's installation. The oil line to the house is capped and removed, and you get the paperwork trail — which matters when you sell the house.
Most owners are surprised by the side benefit: a 1,200–2,500 litre tank plus its clearance zone gives back a serious piece of garden. For LPG homes it's simpler still — the supplier removes their tank or cylinders when the contract ends, and cancelling the standing charge is part of the saving.
A Typical Installation in an Off-Grid Village Property
Rural installations have their own checklist, and it's mostly good news. Village plots tend to be larger, so the outdoor unit's noise assessment passes easily and siting is flexible — behind the garage, on a side wall, away from bedrooms. Power is the thing we check first: nearly all domestic heat pumps up to 12–16 kW run happily on single-phase supply, and we handle the notification to the electricity network operator as part of the job. Older properties get their pipework inspected at the survey; most is reusable, and the few runs that aren't are priced in the quote, not sprung on you later.
The job itself typically takes two to three days: outdoor unit and cylinder first, then radiator changes and electrics, then commissioning and balancing. You're without heating for less than a day in the middle — we schedule winter jobs so that gap lands mid-morning to afternoon. The old boiler comes out, the tank comes out on the agreed day, and the system is explained to you at handover with the controls actually set up for your house, not factory defaults. The design side — heat loss calculation, radiator sizing, cylinder and controls — is identical to any air source heat pump installation; that page covers the engineering in detail.
On reliability — the thing oil users ask about last but care about most — a heat pump has no burner to lock out, no fuel to run dry, no nozzles or fire valves, and no single morning-of-the-frost failure mode. It's a sealed refrigeration circuit and a pump, serviced once a year like your boiler was, with manufacturer warranties of 5–7 years as standard. When something does need attention, the diagnosis is electronic rather than a parts lottery on a twenty-year-old burner.
The Grant, Handled Start to Finish
You never touch a form. At the survey we confirm eligibility and take a copy of your EPC. When you accept the quote, we apply to Ofgem for your voucher; Ofgem emails you once to confirm we're acting with your consent, and that's your entire involvement. The £9,000 appears as a deduction on your invoice — you only ever pay the net amount. After commissioning we redeem the voucher, register the system with MCS and hand over the certificate, warranty and building-control paperwork. If anything about your eligibility is doubtful, you'll hear it from us at the survey, not after you've signed. The grant hub explains the mechanics, including timing around the 21 July start date.
What It Costs After the Grant
Oil-system replacements sit at the fuller end of installation scope — there's a cylinder to fit if you're on a combi-style setup, a tank to remove, and often a bigger unit for a detached rural house. Typical installed prices before support run £10,000–£14,000. After the £9,000 grant:
| Typical project | Before grant | You pay after £9,000 |
|---|---|---|
| 3–4 bed village house, straightforward swap | £10,000–£11,500 | £1,000–£2,500 |
| 4-bed detached, cylinder + radiator upgrades | £11,500–£13,000 | £2,500–£4,000 |
| Large or older rural property, bigger unit | £13,000–£14,000+ | £4,000–£5,000+ |
Oil Replacement Questions
My home is on LPG, not oil — same deal?
Yes. The £9,000 uplift covers both oil and LPG heated homes, and LPG households usually see the biggest bill reduction of anyone, because LPG is the most expensive mainstream heating fuel. Tank or cylinder removal goes back through your LPG supplier, and we coordinate the timing.
Should I wait until 21 July 2026 to go ahead?
If your boiler works, yes — sequence it. Vouchers at the £9,000 rate apply from 21 July 2026; a system commissioned on the old rules gets £7,500. The smart move is to book the survey and quote now, then time the application and installation for after the uplift starts. Surveys are free and the quote holds, so being ready on day one costs nothing. If your boiler has already died, we'll talk honestly about whether a £1,500 wait makes sense against weeks without heating.
Can I keep the oil boiler as a backup for cold snaps?
Not under the grant — the rules require full replacement, and the heat pump doesn't need the backup anyway: it's sized to hold 21 °C indoors at the design winter temperature, and keeps working far below it. Modern units operate to −20 °C and beyond, which Buckinghamshire has never seen.
My EPC lists loft insulation as a recommendation — am I blocked?
Not blocked, just one step behind. Only loft and cavity wall recommendations count, and both are cheap to clear relative to the grant — topping up a loft typically costs a few hundred pounds. Do the work, get the EPC reassessed, and the grant is back on. Solid-wall recommendations do not block eligibility, which matters for older cottages.
Will a heat pump really heat a big, draughty farmhouse?
Yes, if it's sized from a real heat loss calculation — that's non-negotiable in a high-loss house. Expect a larger unit, some radiator upsizing, and an honest conversation about whether modest insulation work first would cut both the install cost and the bills. What a heat pump won't do is fix a draughty house's fuel appetite; nothing does, including oil. The full old-house picture — solid walls, EPC rules, radiator maths — is in our guide to heat pumps in old houses.
Get the Numbers for Your House Before the Window Opens
The £9,000 rate starts on 21 July 2026 and every MCS installer in the county will be booking the same autumn. A free heat loss survey now gets you a fixed quote, your eligibility confirmed, and a place in the queue when vouchers open — with nothing to pay until you decide to go ahead.