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Patio heater for a gazebo

Updated: 21 October 2026

You have a 3 × 3 m gazebo and the sides are half down. A patio heater for a gazebo has to be an electric lamp the structure can carry, with the fabric outside the clearance in that heater’s manual. A bottled-gas mushroom under the same roof is a different risk, and Liquid Gas UK’s line is outdoor only. The electric shortlist is the [patio heater comparison](/hub/portable-heaters/patio-heater). Fuel on an open lawn is the [electric versus gas](/hub/portable-heaters/patio-heater/sub/patio-heater-electric-vs-gas) page. Peter F. used the listings and the public UK gas guidance. A qualifying purchase can earn a commission at no extra cost to you.

You have a 3 × 3 m gazebo and the sides are half down. A patio heater for a gazebo has to be an electric lamp the structure can carry, with the fabric outside the clearance in that heater’s manual.

Our top picks

Harrier Harrier 2000 W patio heater

Best overall

Harrier Harrier 2000 W patio heater
8.2/10about £48.99
View offer
Donyer Power Donyer Power HCH502

Alternative

Donyer Power Donyer Power HCH502
7.5/10about £83.99
View offer
Knightsbridge Knightsbridge HEOD1309BK

Alternative

Knightsbridge Knightsbridge HEOD1309BK
7.9/10about £40.04
View offer
On this page
  1. 1.Electric under a cover, gas only in open air
  2. 2.What a single lamp can do in a small gazebo
  3. 3.Hanging, wall, or a tower under the roof
  4. 4.Clearance, and when to stop

Electric under a cover, gas only in open air

Under a cover, use an electric lamp when the manual allows that mount. These electric heaters do not make carbon monoxide. They can still ignite fabric if the head is too close. Liquid Gas UK says LPG patio heaters are for outdoor use, not an enclosed space, a tent, or a marquee. Sides down on a gazebo are the enclosed case. Open the sides or take the gas heater onto the lawn. Carbon monoxide is colourless and odourless. If you suspect it, get everyone into fresh air and call 0800 111 999. A pergola with no sides still needs the gas manual to allow that roof. Landlords who supply a gas heater need a Gas Safe check at least every 12 months. The socket and the lead are on the how to use page.

What a single lamp can do in a small gazebo

One electric lamp warms the people in the beam. Reviewers put the Donyer HCH502, 800 W or 2,000 W at £83.99, in a gazebo such as 3 × 3 m. Amazon.co.uk shows 4.1 from 284 reviews. They describe a strong orange light at full power, and a pull cord that tears. IP24 suits a roof that keeps rain off the lamp. The Harrier, £48.99 with 4.4 from 342 reviews, is a 2,000 W IPX4 tower, and reviews include use under a wooden gazebo. The 1.8 m lead often fails to clear the base. The Knightsbridge is 1,300 W with a 1.8 m minimum height and a 3 m UK plug. One review used two in a 6 m by 3 m gazebo, which is two loads. The SOUTHEATIC PHE-1500B is listed for a covered patio or gazebo at IP34, £79.99, with 4.3 from 17 reviews. On an open lawn, in a breeze, reviewers describe the same lamp as a disappointment.
Harrier Harrier 2000 W patio heater

Testsieger

Harrier Harrier 2000 W patio heater
8.2/10about £48.99
View offer

Hanging, wall, or a tower under the roof

Hang a lamp when the beam can take the chain and the manual allows it. The HCH502 includes a 1 m chain and suggests a hang around 70.9 inches, about 1.8 m. The Knightsbridge wants 1.8 m minimum, a wall or a 20–60 mm pole, and it weighs 282 g. Several Pro Breeze reviewers say the instructions say indoor use only, against an IP65 title. A tower aims with a tilting head. The Harrier tilts from 0 to 45 degrees and needs level paving and that short lead. The Donyer tower claims fall protection, and its voltage field says 110 V, so the plate comes first.

Clearance, and when to stop

Keep fabric, ribbons, and a plastic roof outside the clearance in the manual. A magazine figure of two or three feet is not a UK legal clearance for every lamp. If the manual is silent, do not guess a gap and drape the valence over the guard. Leave a splash-rated heater under the roof only if the manual allows it and rain cannot blow in. If the gazebo cannot carry the fixing, or the manual forbids the cover, stop. An electrician fits the outdoor socket. Gas Safe is the call for a landlord’s LPG heater or any piped supply.

Common questions

Can I put a patio heater under a gazebo?
Yes, when it is an electric lamp and the manual allows that structure and that height. Reviewers in this set describe the Harrier under a wooden gazebo and the Donyer HCH502 in a 3 × 3 m gazebo. The clearance is the figure in that manual. A gas heater under the same roof is only possible if the sides are effectively open air and that gas manual permits the cover.
Is gas safe if the gazebo sides are down?
No. Liquid Gas UK says LPG patio heaters are outdoor only, not for an enclosed space, a tent, or a marquee. Sides down trap the products of combustion. Carbon monoxide has no smell. Get people outside and call 0800 111 999 if you suspect it. Use an electric lamp instead, and still keep fabric off the head.
Will one electric lamp heat a 3 × 3 m gazebo?
It can warm the people sitting in the beam, which is what HCH502 reviewers describe for a gazebo of about that size. It will not feel like a gas heater across an open lawn, and a second chair outside the beam stays cool. Two Knightsbridge lamps in a 6 × 3 m gazebo are two circuits to think about, not a single bigger flame.
How close can the lamp be to the fabric?
Use the distance in that heater’s manual. The Knightsbridge states 1.8 m minimum mounting height. Other models in this set do not share one legal gap, and a magazine’s two to three feet is not a UK rule you can copy onto every bar. If the manual forbids a cover, do not hang the lamp there.
Should it hang or stand, and can it stay out all winter?
Hang it if the beam can take the chain and the manual allows a hang. Stand the Harrier if you need to aim a tower and the 1.8 m lead reaches. A splash rating such as IP24 or IP34 assumes a sheltered spot, not a winter of wind-blown rain. Take it in, or keep it only where the manual’s weather line still matches the roof you have.

Related pages

Patio heater buying guide

Patio heater

Best patio heater if the lead and the IP code agree

Electric vs gas patio heater for the site you have

How to use a patio heater: lead, RCD socket and cost

Sources

Public UK sources for plugs, weather codes, LPG and the hourly arithmetic. Listing prices, stars and review counts are from amazon.co.uk on 19 October 2026.

  1. Ofgem — Changes to the energy price cap, 1 October to 31 December 2026 (retrieved 19 October 2026)
  2. Electrical Safety First — Patio heaters (retrieved 19 October 2026)
  3. Electrical Safety First — Ratings of electrical appliances (retrieved 19 October 2026)
  4. legislation.gov.uk — Electrical Equipment (Safety) Regulations 2016, regulation 35 (retrieved 19 October 2026)
  5. Liquid Gas UK — CGS 04 (August 2020) (retrieved 19 October 2026)
  6. HSE — Carbon monoxide FAQ (retrieved 19 October 2026)
  7. Energy Saving Trust — Summer energy saving (retrieved 19 October 2026)
  8. BSI — BS EN 60335-2-30:2009+A13:2022 (retrieved 19 October 2026)