Fire Pit Fuel UK: What to Burn, What It Costs and What's Legal

Fire Pit Fuel UK: What to Burn, What It Costs and What's Legal

Posted by Amy Hall on 27th Oct 2026

Fire Pit Fuel UK: What to Burn, What It Costs and What’s Legal

Hand-drawn fire pit fuel title card

The best fuel for a UK fire pit is the one your pit was built for, and that you are allowed to burn where you live. For most steel or cast iron wood-burning pits that means dry, well-seasoned logs. If you live in a smoke control area, or you simply want less smoke, it means an authorised smokeless fuel or a gas or bioethanol pit. This guide takes each fuel in turn, so you can match it to your pit, your garden and your neighbours.

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TL;DR

  • Dry wood is the best all-round choice for a traditional pit. Look for the Ready to Burn label, which signals wood with 20% moisture or less.
  • Check for a smoke control area first. In one, you can only burn authorised fuels, or burn wood on a Defra-approved appliance.
  • Coal and cheap charcoal can overheat thin metal pits. Check your manufacturer’s fuel instructions before you buy a bag.
  • Gas and bioethanol are the low-smoke options, but they cost more to run, and gas may need professional installation.
  • Never burn rubbish, painted or treated wood, and never leave a fire unattended.

Table of Contents

1. Start with your pit, not the fuel

Before comparing fuels, look at what you own or plan to buy. A pit is designed around one fuel type, and the wrong choice can damage it or make it unsafe.

  • Open steel or cast iron bowls are made for logs, and sometimes charcoal.
  • Chimeneas are also built for wood, and many suit smokeless fuel. Our guide to choosing between a chiminea and a fire pit explains the differences.
  • Gas pits run on propane or natural gas and need the right regulator and hose.
  • Bioethanol burners only take liquid bioethanol. Liquid fuels and accelerants should only go in a pit specifically designed for them.

The manufacturer’s instructions are the final word. If a booklet says wood only, that is what you burn. If you are still choosing a pit, our overview of fire pit types and their fuels shows where each one works best.

2. Wood: the classic choice, if it is dry

Wood gives you the crackle, the scent and the glow most people picture when they think of a fire pit. It is also good for grilling, and Husqvarna’s fire pit guide notes that wood is cheaper than gas and offers the sights and smells of a traditional campfire.

What matters most is how dry it is. Defra’s practical guide to open fires explains that wet wood makes more smoke and harmful particles, and gives less heat. It says dry wood should hold 20% moisture or less, and that buying fuel with the Ready to Burn label is the simplest way to be sure.

Kiln-dried or seasoned logs

Kiln-dried logs are the easiest option. They light quickly and burn cleanly, and fire and rescue guidance from Mid and West Wales says they reduce sparks and smoke. Freshly cut or damp logs from a garden pile will hiss, smoulder and annoy the neighbours. If you season your own, split the logs, stack them off the ground under cover, and give them a good while to dry.

Split firewood stacked under a simple cover

What never goes on the fire

Use clean, untreated wood only. Painted, coated or pressure-treated timber, plastics, rubber and household waste can release toxic chemicals, according to the fire and rescue service guidance. Woking Borough Council gives the same warning about coated materials and rubbish. Old pallets and fence panels are common culprits, because you often cannot tell how they were treated.

3. Charcoal and coal: heat with a catch

Charcoal is the cook’s fuel. It lights easily, gives a steady heat and suits a grill grate over the pit. Our fire pit cooking guide covers timings and recipes, and our charcoal versus gas barbecue comparison helps if you are weighing up a barbecue as well.

The catch is temperature. Fitzpatrick’s fuel guide points out that charcoal produces substantial heat, which can be a problem for cheaper pits with thinner metal. It also says coal burns at a very high temperature and can damage fire pits. If your pit has thin walls, stick to wood unless the maker says otherwise.

A practical tip: whichever fuel you use, never pile it above the rim, and let the pit cool fully before you move it or cover it.

4. Smokeless fuel: what it is and what it needs

Smokeless fuel is a manufactured or naturally low-smoke solid fuel, such as anthracite or smokeless briquettes. No fuel is completely smokeless, but authorised ones produce far less smoke than logs or house coal. They suit chimeneas and some pits, and they are the usual answer if you live in a smoke control area.

Two checks matter:

  1. Is the fuel authorised? GOV.UK’s smoke control rules list authorised fuels such as anthracite, semi-anthracite, gas and low volatile steam coal. Look for the approval on the bag.
  2. Is your pit designed for it? Smokeless fuel burns hot, and it often needs a grate so air can reach the fuel from below. A shallow bowl may not suit it.

We go deeper on this in our guide to smokeless fire pits and how they work.

5. Gas and bioethanol: the low-smoke options

Gas

A gas fire pit gives you instant flames and no ash. The trade-off is installation. Husqvarna’s guide notes that a gas pit needs professional plumbing, which could add to the cost, when it is connected to a mains supply. Bottled propane models are simpler, but you still need to store and change cylinders safely.

Bioethanol

Bioethanol burns with no smoke or ash, and it is convenient: you pour it in, light it and snuff it out. The heat is gentler than a log fire, so these pits are better for atmosphere than for warming a large group.

Running cost varies with burner size and flame setting. Grand Designs Magazine gives a UK example of about £4 an hour, at £5 a litre, when 8 litres lasts 10 hours. Treat that as a guide, since your fuel price and burner will differ. As a rough working rule, check the burner’s stated consumption on its product page, then multiply by your litre price.

Only pour bioethanol into a cold, fully extinguished burner. Never top up while a flame or hot surface is present.

6. Fuel compared at a glance

Fuel Smoke Best for Watch out for
Dry or kiln-dried wood Low if dry, high if wet Atmosphere, grilling Smoke control areas, damp logs
Charcoal Low once lit Cooking Heat can stress thin metal
Smokeless fuel Much lower than logs Chimeneas, smoke control areas Pit must suit it, authorised only
Gas None, no ash Instant, tidy heat Professional plumbing for mains
Bioethanol None, no ash Patios, low-effort evenings Higher cost per hour, gentler heat

7. Are fire pits banned in the UK?

No. There is no general ban on garden fire pits in the UK. What exists is a set of rules about smoke and nuisance, and they vary by where you live.

Smoke control areas are the main one. GOV.UK explains that in these areas you must not emit smoke from a chimney, and that unauthorised fuels are not allowed. Defra’s guide adds that controlled fuels such as wood may only be burned on Defra-approved appliances there, and says your local authority can confirm whether your address is covered. Ask your council before you buy.

Fire pit rules inside and outside smoke control areas

Outside those areas, you can burn wood, but councils can still act on persistent smoke that bothers neighbours. Being considerate is the practical rule: dry fuel, sensible timing, and a word with next door if you plan a long evening.

8. Safety rules that prevent accidents

Most fire pit accidents come from ordinary evenings going slightly wrong. Devon and Somerset Fire and Rescue Service says most of the summer fires it attends happen at everyday social occasions, when people get distracted.

  • Never leave the fire unattended. Surrey Heath Borough Council gives this advice, and it applies to every fuel.
  • Keep a clear zone around the pit. Our fire pit safety guide explains the distances we recommend and how to buy sensibly.
  • Use a spark screen with wood. Husqvarna notes that screens help stop embers flying.
  • Take care on decking. Heat and embers can mark or ignite timber, so see our advice on a safe fire pit on decking.
  • Keep water or a suitable extinguisher nearby, and keep children and pets back from the pit.

If you are unsure whether your garden layout is safe for a fire, ask your local fire and rescue service for advice before lighting up.

9. Matching fuel to your garden

Here is how we would choose, by situation:

  1. Smoke control area, want real flames: an authorised smokeless fuel in a pit or chiminea made for it, or a gas or bioethanol pit.
  2. Outside a smoke control area, want a traditional fire: kiln-dried or Ready to Burn logs in a wood-burning pit.
  3. Mainly cooking: charcoal, in a pit with thick enough walls and a grill grate.
  4. Small patio or balcony with close neighbours: bioethanol or gas, for no smoke and no ash.
  5. Rented property: check the tenancy, then choose a freestanding pit and a clean fuel. Check the lease or ask the landlord before any fire.

If you want to compare heat output more widely, our guide to outdoor heating options and the fire pit size guide will help you pick a pit that warms your space.

10. Our view on fire pit fuel

We sell chimeneas, fire pits and the accessories around them, and we hear the same question again and again: why does my fire smoke so much? Nine times in ten it is the fuel, not the pit. Damp logs smoulder, and the smoke builds up.

Our advice is simple. Buy dry fuel, store it under cover, and read the instruction booklet before the first fire. Choose a pit that fits the fuel you actually want to burn, rather than hoping the two will get along. If you are new to this, start with kiln-dried logs or an authorised smokeless fuel in a pit that suits it, and build confidence from there. A calm, well-run fire is worth far more than a big, smoky one.

— Peter

11. Choosing a pit or chiminea to suit your fuel

Once you know your fuel, the right pit follows. Our chimeneas and heating range includes cast iron and steel chimeneas, such as the Gardeco Toledo cast iron chimenea in bronze and the pot belly steel chimenea. Orders over £70 come with free delivery, next-day delivery options are available, and returns are accepted within 14 days. A chimenea cover helps protect yours through the wet months.

FAQ

What is the best fuel for a fire pit in the UK?

For most wood-burning pits, kiln-dried or Ready to Burn logs are the best choice, because they burn cleaner and give more heat than damp wood. If you live in a smoke control area, use an authorised fuel or a pit approved for burning wood. Always follow your pit’s manufacturer instructions.

Can I use smokeless fuel in a fire pit?

Often yes, if the fuel is authorised and the pit is designed for it. Smokeless fuel burns hotter than wood and may need a grate, so a thin or shallow bowl may not cope. Check the manual, or ask the retailer before you buy.

How long does 1 litre of bioethanol last?

It depends on the burner size and flame setting, so check the product’s stated consumption. As a guide, Grand Designs Magazine cites 8 litres lasting 10 hours, which works out at around an hour and a quarter per litre. Small, low flames last longer than large ones.

Are fire pits banned in the UK?

No, there is no general ban. The rules that matter are smoke control areas, where only authorised fuels or approved appliances are allowed, and nuisance laws for smoke that disturbs neighbours. Ask your local council whether your address is in a smoke control area.

Sources

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