Energies
Electric vs Gas Heating Costs Compared UK
How electric and gas heating costs compare, running costs by home size, when electric heating makes sense, and the future of home heating. UK 2026 guide.
Gas has been the cheapest way to heat a UK home for decades, but the rise of heat pumps, smart tariffs, and energy efficiency improvements is changing the calculation. Here is how the options compare right now.
Running Cost Comparison
| Heating type |
Fuel cost per kWh |
System efficiency |
Effective cost per kWh of heat |
Annual cost (3-bed home, 12,000 kWh heat demand) |
| Gas boiler (modern condensing) |
7p |
90% |
7.8p |
£936 |
| Oil boiler |
6–8p |
85% |
7–9.4p |
£840–£1,128 |
| LPG boiler |
8–10p |
85% |
9.4–11.8p |
£1,128–£1,416 |
| Air source heat pump |
24p |
300% (COP 3.0) |
8p |
£960 |
| Ground source heat pump |
24p |
400% (COP 4.0) |
6p |
£720 |
| Direct electric (panel heaters) |
24p |
100% |
24p |
£2,880 |
| Storage heaters (Economy 7) |
12p off-peak |
100% |
12p |
~£1,440 |
| Infrared panels |
24p |
100% (but heats differently) |
24p (lower usage claimed) |
£1,500–£2,400 |
Annual Heating Costs by Home Size
Gas Boiler vs Direct Electric vs Heat Pump
| Home size |
Heat demand (kWh) |
Gas boiler |
Direct electric |
Air source heat pump |
| 1-bed flat |
5,000 |
£390 |
£1,200 |
£400 |
| 2-bed terraced |
8,000 |
£625 |
£1,920 |
£640 |
| 3-bed semi |
12,000 |
£936 |
£2,880 |
£960 |
| 4-bed detached |
18,000 |
£1,404 |
£4,320 |
£1,440 |
| 5-bed detached |
25,000 |
£1,950 |
£6,000 |
£2,000 |
Direct electric heating is 2.5–3.5× more expensive than gas or heat pumps.
Installation Costs
| System |
Installation cost |
Lifespan |
Annual maintenance |
| Gas boiler |
£1,800–£4,500 |
12–15 years |
£80–£150 |
| Air source heat pump |
£10,000–£18,000 (£7,500 BUS grant available) |
20–25 years |
£100–£200 |
| Ground source heat pump |
£15,000–£35,000 (£7,500 BUS grant available) |
20–30 years |
£100–£200 |
| Electric panel heaters |
£1,000–£3,000 (whole house) |
15–20 years |
None |
| Storage heaters |
£2,000–£5,000 (whole house) |
15–20 years |
None |
| Infrared panels |
£2,000–£5,000 (whole house) |
20+ years |
None |
10-Year Total Cost Comparison (3-Bed Home)
| System |
Install cost |
10-year running cost |
10-year maintenance |
10-year total |
| Gas boiler |
£3,000 |
£9,360 |
£1,200 |
£13,560 |
| Air source heat pump (after BUS grant) |
£7,500 |
£9,600 |
£1,500 |
£18,600 |
| Air source heat pump (no grant) |
£15,000 |
£9,600 |
£1,500 |
£26,100 |
| Direct electric heaters |
£2,000 |
£28,800 |
£0 |
£30,800 |
| Storage heaters (Economy 7) |
£3,500 |
£14,400 |
£0 |
£17,900 |
Gas boilers have the lowest 10-year total cost. Heat pumps (with the BUS grant) are competitive for longer time horizons.
When Electric Heating Makes Sense
| Situation |
Why electric can work |
| Well-insulated new build flat |
Low heat demand means the cost difference is small |
| Rarely-used rooms |
Heating only when needed (no boiler idle losses) |
| Off-gas-grid property |
Avoids expensive oil or LPG — heat pump ideal |
| Holiday let or second home |
No boiler maintenance, no gas safety certificate needed |
| Supplementary heating |
Top up a room cheaply with a panel heater |
| No space for a boiler or cylinder |
Electric heaters need no external infrastructure |
| Solar panels + battery |
Use free solar electricity for heating daytime |
When Gas Heating Is Better
| Situation |
Why gas wins |
| On the gas grid |
Gas is the cheapest fuel for heating |
| Older, less insulated home |
High heat demand makes gas savings significant |
| Multiple bathrooms needing hot water |
Combi or system boiler delivers hot water efficiently |
| Budget-constrained |
Gas boiler is cheapest to install |
| Family home with high usage |
Running costs matter more with high demand |
Heat Pumps — The Middle Ground
| Advantage |
Explanation |
| Running costs similar to gas |
COP of 3.0+ means 1 kWh of electricity produces 3 kWh of heat |
| Government grant available |
BUS provides £7,500 towards installation |
| No gas needed |
Works on electricity only |
| Lower carbon |
Especially as the grid gets greener |
| Longer lifespan |
20–25 years vs 12–15 for a gas boiler |
| Cooling in summer |
Some models reverse to provide cooling |
| Disadvantage |
Explanation |
| Higher upfront cost |
Even with grant, more expensive than gas boiler |
| May need radiator upgrades |
Heat pumps work at lower temperatures |
| Needs outdoor space |
External unit required |
| Less effective in poorly insulated homes |
Best with good insulation (EPC C or better) |
| Hot water needs a cylinder |
No instant hot water like a combi boiler |
Future of UK Home Heating
| Development |
Status |
| New build gas boiler ban |
From 2025 — new homes must have low-carbon heating |
| Existing home gas boiler ban |
No ban confirmed — government encourages switching |
| Boiler Upgrade Scheme |
Extended to 2028 (£7,500 for heat pumps) |
| Clean Heat Market Mechanism |
Requires boiler manufacturers to sell a proportion of heat pumps |
| Hydrogen for heating |
Trials ongoing but unlikely to be widespread before 2035 |
| Heat networks |
Growing in new developments and urban areas |
| Electricity prices |
Expected to fall relative to gas as renewables expand |
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