Gas Fire Pit FAQs: Everything UK Buyers Ask Before Purchasing

Are Gas Fire Pits Legal In The UK?

Yes. Gas fire pits are fully legal for domestic use across the UK because they produce a clean, controlled flame with no sparks or embers.

Do Gas Fire Pits Give Off Enough Heat?

Yes. Quality models typically produce 40,000–60,000 BTUs, which is plenty for outdoor seating areas. Higher BTUs = stronger heat & usually a larger product. 

How Long Does A Gas Bottle Last?

Approximate burn times at medium/high flame:

• 5kg bottle: 6–8 hours
• 13kg bottle: 18–25 hours
  This varies by flame height and BTU output.

What Size Gas Bottle Do I Need?

Most gas fire pits use 13kg Patio Gas (propane). Some smaller models accept 5kg bottles, but 13kg offers much longer burn time.

Can A Gas Fire Pit Run On Natural Gas?

Only if the manufacturer provides a certified conversion kit. Many UK models are LPG-only. Never convert unless explicitly allowed.

Are Gas Fire Pits Safe?

Yes. They are one of the safest outdoor heating options. No sparks, no ash, and the flame is controlled. Check hoses and regulators regularly.

Can I Cook On A Gas Fire Pit?

I wouldn't recommend it due to the mess. Most are decorative heating appliances, not cooking devices, unless specifically designed for grilling.

But of course, if you avoid the mess, you can roast a marshmallow.

Are Gas Fire Pits Expensive To Run?
 

To refill a13kg bottle (~£35–£46) typically lasts 18–25 hours, making it cheaper than many patio heaters.

Converting to natural gas is the most cost efficient way to run your fire pit.

What Gas Do Fire Pits Use In The UK?

Most gas fire pits in the UK run on LPG (propane), typically supplied in Patio Gas bottles. Butane is not recommended, especially in colder weather, as it struggles to perform at low temperatures.

Can I Leave My Gas Fire Pit Outside All Year?

Yes, high-quality gas fire pits are designed for outdoor use year-round. For best longevity, always use a weatherproof cover when not in use and disconnect the gas bottle during long periods of inactivity.

What BTU Rating Should I Choose For My Garden?

For small patios/balconies, 40,000-45,000 BTUs is sufficient.
Medium gardens perform best at 40,000–50,000 BTUs.
Large open spaces benefit from 50,000–60,000+ BTUs for effective heat coverage.

Are Gas Fire Pits Better Than Patio Heaters?

Yes, in many cases. Gas fire pits provide radiant heat at seating level, are more visually appealing, and often cost less to run than tall mushroom-style patio heaters.

Do Gas Fire Pits Need Electricity?

No. Most gas fire pits use battery-powered ignition or manual spark systems, meaning they work without any electrical connection. This is the case with Elementi products. 

Can I Use A Gas Fire Pit On A Balcony?

Sometimes, if explicitly approved by your building management and manufacturer. Balconies are often classed as enclosed spaces, which makes gas fire pits unsafe and not compliant.

Are Gas Fire Pits Wind-resistant?

Yes. Gas flames are far more wind-stable than wood fires. Many models also support glass wind screen, which help maintain flame height and heat output in breezy conditions.

Will A Gas Fire Pit Heat Everyone Sitting Around It?

Gas fire pits provide localised warmth rather than whole-area heating. For best results, seating should be positioned evenly around the flame and within the recommended heat radius.

Can I Use A Gas Fire Pit Under A Pergola?

Generally yes, if the pergola is open-sided and you follow the manufacturer’s clearance guidelines. Never use under low fabric roofs.

Do Gas Fire Pits Work In Winter?

Absolutely. LPG burns consistently in low temperatures, so a gas fire pit works reliably year-round.

Do Gas Fire Pits Smell Or Produce Smoke?

No, LPG burns cleanly with no smoke and minimal odour.

Can I Place A Gas Fire Pit On Decking?

Yes, if the model is deck-safe and used with proper heat shielding and safety clearances.
Avoid cheap steel bowl designs that radiate downward heat.

Can Rain Damage A Gas Fire Pit?

Light rain won’t harm a good-quality fire pit, but you should always use a protective cover when not in use to protect burners and finishes.

Do Gas Fire Pits Need Ventilation?

Yes, always use them outdoors in open air. Never in enclosed spaces.

How Do You Turn On A Gas Fire Pit?

Most use a simple push-button ignition and adjustable control knob. No matches needed.

Are  Gas Fire Pits Child And Pet Friendly?

They’re safer than wood fires, but the surface can still get hot. Supervise children and pets around any open flame.

Purchasing a windscreen will drastically increase the safety. 

Do I Need Planning Permission For A Gas Fire Pit?

No, domestic gas fire pits do not require planning permission.

Can A Gas Fire Pit Be Left Burning Unattended?

Yes, but i wouldn't recommend it. Even though gas fire pits are controlled and safe, they should never be left unattended. Always turn the fire pit off when you leave the area. It is as easy as a light switch.

Do Gas Fire Pits Need Servicing?

They don’t require annual servicing like boilers, but it’s good practice to check hoses, regulators, and burner ports at least once per season to ensure safe operation.

Are Gas Fire Pits Environmentally Friendly?

Gas fire pits burn cleaner than wood, producing lower particulate emissions and no smoke. While not carbon-neutral, they are a more eco-friendly option than traditional wood fires.

Can I Customise The Flame Appearance?

Yes. Most gas fire pits allow you to use lava rock, fire glass, or ceramic logs, which change both the flame look and the overall aesthetic.

What Happens If The Flame Goes Out Suddenly?

Many modern gas fire pits include flame failure devices that automatically cut off the gas supply if the flame extinguishes unexpectedly.

Is It Safe To Use A Gas Fire Pit Near Neighbours?

Yes. Because gas fire pits produce no smoke and minimal odour, they are far less likely to disturb neighbours compared to wood-burning fire pits.

What’s The Lifespan Of A Gas Fire Pit?

With proper care, a quality gas fire pit can last 10+ years.