How to Switch Heating Fuels Before Winter 2026
With gas prices stable but oil rising, now's the time to review your heating fuel. Here's how to compare and switch before the cold hits.
Energy costs remain a major concern for UK households. With mains gas at 6.04p/kWh and heating oil climbing to 98p/litre, many homeowners are asking: should I switch fuels this autumn?
The answer depends on your current setup, budget, and location. Here's how to make the right choice.
Understand Your Current Fuel
First, identify what you're using now:
- Mains gas – piped to your home, widely available in towns and cities
- Heating oil – stored in a tank, common in rural areas without gas connections
- Electricity – increasingly viable with heat pumps, currently at 24.5p/kWh
- Wood pellets – renewable option at 7.2p/kWh, requires specialist boiler
Your postcodes determines availability. If you're off the gas grid, switching isn't always possible—but comparing your existing fuel supplier is still essential.
Compare Prices Across Fuels
Don't assume your current fuel is cheapest. Use these comparison tools:
- Compare mains gas suppliers
- Compare heating oil providers
- Compare electricity rates
- Compare wood pellet suppliers
Enter your postcode and annual usage (check your last bill) to see real rates. Factor in boiler compatibility—switching fuels often requires a new boiler, which costs £2,000–£5,000.
Calculate True Cost Per kWh
Prices look different when you standardise them. For example:
- Heating oil: 98p/litre ÷ 10.15 kWh per litre = 9.65p/kWh
- Wood pellets: 7.2p/kWh
- Mains gas: 6.04p/kWh
- Electricity: 24.5p/kWh
Wood and gas appear cheaper on paper—but installation, maintenance, and fuel availability vary regionally. Rural households relying on oil should note rising wholesale prices; mains gas remains the most stable option where available.
Act Before October
With winter heating season approaching, fuel suppliers often raise prices. Take these steps now:
1. Request a boiler service (£80–£120) to confirm it's working efficiently
2. Get at least two quotes if considering a boiler replacement
3. Lock in fixed-rate contracts on comparison sites—some suppliers offer autumn discounts
4. Check insulation; better insulation reduces fuel needs by 10–20%
The Bottom Line
Stay put if you're on mains gas and already on a competitive tariff. If you're paying for heating oil, review alternatives—rising crude prices make oil increasingly uneconomical. Off-grid households should explore wood pellets if space allows, or consider whether mains gas connection is feasible.
Don't wait until November when demand peaks and prices climb. Compare your options today using our tools above, and lock in savings before the heating season begins.