Heat pump vs oil boiler
Heat pump vs oil boiler
Oil is expensive and high-maintenance. See the honest comparison on running costs, comfort and carbon — and the bigger £9,000 grant off-grid oil homes can claim.
Compare: vs Gas boiler vs Oil boiler vs LPG boiler vs Electric
If you heat with oil, a heat pump is one of the strongest switches you can make. Oil is expensive and getting it involves deliveries, a tank and price volatility. Here's the honest comparison on running costs, comfort, carbon and upfront cost — plus the bigger grant off-grid oil homes can claim.
Running costs: heat pump vs oil
Heating oil costs more per unit of useful heat than a heat pump's electricity once you account for the heat pump's efficiency. Most oil homes see a genuine saving. The table is indicative — your figure depends on usage, insulation and tariff.
| System | Indicative annual cost |
|---|---|
| Oil boiler | higher |
| Air source heat pump | lower — typically a few hundred £ less |
Try the savings calculator for your own estimate.
The bigger grant for oil homes
Off-grid oil homes can claim the higher £9,000 Boiler Upgrade Scheme grant during the uplift window (21 Jul 2026 – 31 Mar 2027), versus £7,500 standard. That makes the upfront cost especially manageable. Details on the grant page.
Comfort, carbon and convenience
Beyond bills, switching from oil removes deliveries, tank upkeep and the risk of running dry in winter. A heat pump gives steady, even warmth, far lower carbon, and no combustion in your home. For most oil households the case is strong on running costs and everything else.
Common questions
Is a heat pump cheaper to run than an oil boiler?
Usually yes. Heating oil is relatively expensive and oil boilers are less efficient than a well-run heat pump, so most oil homes see a real annual running-cost saving — often in the region of a few hundred pounds, depending on usage, tariff and how well the home is insulated.
How much can I save switching from oil to a heat pump?
As a rough guide, a typical home might save somewhere around £200–£500 a year on running costs versus oil, sometimes more. On top of that you remove oil deliveries, tank maintenance and price-spike risk. Use the savings calculator for an indicative figure for your home.
Do off-grid oil homes get a bigger grant?
Yes. From 21 July 2026 to 31 March 2027, eligible off-gas-grid homes currently on oil can claim the higher £9,000 Boiler Upgrade Scheme grant instead of £7,500 — recognising that off-grid homes have the most to gain.
Will I miss my oil boiler's heat?
No — a correctly sized heat pump keeps your home just as warm, with steadier, more even heat. You also lose the hassle of ordering oil, monitoring the tank and the smell, and you gain a quieter system with no combustion in the home.
See your numbers for switching from oil
The calculator shows your system size, install cost, the grant applied and your running-cost change — honestly.