Log Burner vs Gas — UK 2026 Cost & Running Comparison
Log burner vs gas fire vs gas central heating. The economics, the experience, and when each makes sense for UK homes in 2026.
Short answer
A log burner is roughly comparable to mains gas per kWh (6-9p/kWh wood vs 10-12p/kWh gas in 2026), but the comparison isn't straightforward. The log burner heats one room very well; central heating heats the whole house. Most UK owners use both: log burner for the main living space, gas central heating for the whole-house background.
Direct comparison
| Factor | Log burner | Gas fire |
|---|---|---|
| Install cost | £2,800-£5,500 typical UK | £500-£2,500 |
| Running cost per kWh | ~6-9p (kiln-dried wood) | ~10-12p (UK gas 2026) |
| Annual fuel cost (regular use) | £400-£770 wood | £300-£600 gas (room heated) |
| Maintenance | £60-£90/yr sweep + chimney check | £100/yr safety check (Gas Safe) |
| Lighting time | 20-30 min to full heat | Instant |
| Storage required | 3-4m³ wood store outdoors | None |
| Whole-house heating | Single room only | Whole house (with central heating) |
| Off-grid resilience | Yes — works in power cuts | Depends on boiler/system |
| Aesthetic / experience | Real flame, real wood | Effect flame (artificial) |
| CO2 footprint | Carbon-neutral if sustainable | Fossil fuel emissions |
Calculate your log burner install cost
UK 2026 typical: £2,800-£3,800 for a mid-range install. Use the calculator for a personalised estimate.
Open the calculator →When a log burner makes more sense than gas
- You value the "event" of operating it: for UK owners who enjoy the ritual of lighting, tending, and experiencing a real fire, the log burner is irreplaceable
- Off-grid resilience matters: the 2022-23 energy crisis made many UK homeowners aware that gas systems fail in power cuts; log burners don't
- You can self-source wood: free wood from arborists, fallen trees, sawmill offcuts, or Freegle/Freecycle dramatically improves the economics
- You want aesthetic warmth: real flames, real wood smoke (subtle when operated correctly), real ritual — gas-effect fires don't replicate this
- Rural / poorly-served gas areas: where main gas supply is unreliable or unavailable, log burners offer actual heating independence
When gas makes more sense
- Whole-house heating matters more than the room: gas central heating warms upstairs, kitchen, hallway — log burners only heat the room they're in
- Lower install cost: gas fires £500-£2,500 vs log burners £2,800-£5,500
- You can't source wood: petrol-station wood at £11/bag makes the running cost worse than gas
- Instant heat needed: gas fires turn on immediately; log burners need 20-30 minutes to reach operating temperature
- No storage space: 3-4m³ of wood storage outdoors is non-trivial. Flats and small properties may struggle
- You don't want maintenance: gas fires need annual Gas Safe checks but no chimney sweeping
Hybrid approach — what most UK owners do
The pragmatic UK 2026 setup:
- Gas central heating as primary whole-house heating, particularly for upstairs and morning warm-up
- Log burneras supplementary heating in the main living space — used most evenings through winter, when you'd otherwise turn the gas thermostat higher
- Net effect: gas runs at a lower set point (saving ~£150-£400/year on gas) while the log burner delivers the ambient warmth in the room you're actually in
This is the Energy Saving Trust's estimated 10% savings scenario — and matches r/DIYUK owner consensus on the practical economics.
Pair with these guides
- Log burner running cost — the full annual breakdown: firewood, sweep, consumables. Annual running cost →
- What size log burner do I need — the room vs whole-house decision starts with sizing. Sizing guide →
- Best wood for log burners — per-kWh wood cost depends heavily on where you source it. Firewood guide →
Frequently asked questions
Is a log burner cheaper to run than gas?
Per kWh: roughly comparable. Log burner ~6-9p/kWh using kiln-dried wood at £140/m³. Mains gas ~10-12p/kWh in 2026. For the room it's in, a log burner can be ~30% cheaper per kWh than gas. But gas heats the whole house; a log burner only heats one room properly.
Should I replace my gas boiler with a log burner?
Almost certainly no. Log burners are excellent zonal heating for one room but won't reliably heat upstairs or through closed doors. UK owners consistently report keeping the central heating boiler as primary heating and the log burner as supplementary 'feature room' heating. Replacing the boiler entirely with a log burner is uncomfortable for whole-house operation.
How much does a log burner save vs gas?
Energy Saving Trust estimates a wood burner used as primary room heating can save ~10% on overall heating bills. Specific savings depend on how much you replace gas with wood vs supplement. Typical UK owner: saves £150-£400/year off their gas bill during winter months.
Gas fire vs log burner — pure heating economics?
Gas fire is cheaper upfront install (£500-£1,500 vs £2,800-£5,500 for log burner). Lower running cost per kWh at 2026 prices is marginal. Gas wins on ease (no wood storage, no lighting). Log burner wins on aesthetic, off-grid resilience, and the 'event' of operating it.
How much would a log burner save me per year?
Typical UK regular use: £400-£770/year in wood costs offsets £600-£1,200/year in saved gas heating (room you'd otherwise heat with gas). Net saving ~£200-£500/year. Add the ~£2,800-£3,800 installation cost amortised over 15-20 years and the financial case is modest at best.