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Pellet patio heater UK

Updated: 22 October 2026

You want a garden flame without hauling propane, and the tall glass tubes on amazon.co.uk look closer to a fire-pit sculpture than a gas mushroom heater. That reading is roughly right. A pellet patio heater UK burns wood pellets in an open flue, shows the fire through borosilicate glass, and gives modest radiant warmth while the fuel lasts. It is not an indoor stove and not a substitute for dressing for a cold evening. Both outdoor models are on the [pellet heating comparison](/hub/heating/pellet-heating). Peter F. checked the listings and public UK sources. There was no lab test. A qualifying purchase can earn a commission at no extra cost to you.

You want a garden flame without hauling propane, and the tall glass tubes on amazon.co.uk look closer to a fire-pit sculpture than a gas mushroom heater. That reading is roughly right.

Our top picks

ecoblaze Ecoblaze 15 kg wood pellets

Best overall

ecoblaze Ecoblaze 15 kg wood pellets
9.6/10about £10.49
View offer
onlyfire Onlyfire pellet patio heater

Rank 2

onlyfire Onlyfire pellet patio heater
8.4/10about £124.99
View offer
CTSC CTSC outdoor pellet heater

Rank 3

CTSC CTSC outdoor pellet heater
7.0/10about £79.99
View offer
On this page
  1. 1.How pellet patio heaters work
  2. 2.Safety and placement
  3. 3.Heat and runtime
  4. 4.Cleaning the glass tube
  5. 5.The two outdoor models

How pellet patio heaters work

The outdoor rows are the onlyfire glass-tube heater, 147.5 cm tall, and the CTSC heater with a 100 × 8 cm tube. Neither listing includes pellets. You supply dry fuel, typically 6 mm. Bagged choices are on best wood pellets for heating. Fuel burns in a base chamber and hot gas rises through the glass. The onlyfire listing cites about 2.8 kg, roughly 120 minutes and 4500 W. Those are seller claims. UK reviewers often report shorter sessions in wind. The flue is open, so the listings warn against gazebos, pergolas, canopies and shade sails. Use open air, as you would with a charcoal grill under a low roof.

Safety and placement

Stand the heater on paving, stone or a steel plate. Decking worries reviewers who mention embers. Add a fire mat only if the manufacturer allows it, and keep combustible furniture back from the column. Wind makes lighting harder and pushes smoke toward seats. Comments on both SKUs describe fussy starts in gusts. Point the drift away from doors and neighbours. Keep children, pets and loose clothing back, as with any open fire. Wait until the glass is cold before you move the unit or clean it. Store the bags elsewhere. Habits for an open sack are on store and feed pellets.
ecoblaze Ecoblaze 15 kg wood pellets

Testsieger

ecoblaze Ecoblaze 15 kg wood pellets
9.6/10about £10.49
View offer

Heat and runtime

Do not expect gas-patio warmth across a six-seat table. onlyfire reviews praise the look and call the heat modest. CTSC, 3.4 from 70 reviews, draws more comments that warmth goes up the flue, and this capture states no heat output for it. At close range on a still evening, owners still feel some radiation and like the light. Buy for ambience first. A fill lasts about one to two hours when the wind behaves. One onlyfire reviewer cited roughly 90 minutes against the 120-minute bullet. Cost an evening from kilograms burned and your bag price, not from the heater’s shelf price.

Cleaning the glass tube

Soot is the maintenance cost. Both review samples describe tubes turning black, awkward cleaning, and one onlyfire comment of glass breaking in the wash. Cool the tube fully and skip abrasives the manual does not list. Burn, cool, wipe, and expect some stain to return. If you hate that chore, this is the wrong product.

The two outdoor models

onlyfire B0C6XG7NDM is £124.99 at capture, 4.0 from 126 reviews, with 4500 W stated, a 2.8 kg fill and about 120 minutes claimed, in a 147.5 cm column. Reviews like the flame and fault the heat, the soot, wind lighting and missing paper instructions. CTSC B0DTH9D51B is £79.99, 3.4 from 70 reviews, with no heat figure in this capture and a shorter tube. It is the cheaper flame on a calm night, with more weak-heat comments. The taller onlyfire sheet and the larger review pool cost more. Neither is an indoor chimney. If you also burn indoors, read smoke control areas and pellets.

Common questions

Are pellets included?
No. The captured listings for the onlyfire and CTSC patio heaters do not state that pellets are included. You order bagged fuel separately and keep it dry until you load a fill. The onlyfire seller figure is about 2.8 kg per fill. The Ecoblaze 15 kg bag in this comparison is fuel, not the heater.
Can I use it under a gazebo?
No. Listing bullets warn against gazebos, covered pergolas, canopies and shade sails because the flue is open. Use open, ventilated air, the same rule you would apply to a charcoal grill under a low roof. A clean pellet does not make a covered structure safe for this type of heater.
How much heat should I expect?
Expect modest radiant warmth at close range, not gas-mushroom coverage of a dining table. Reviews rate the flame above the heat. onlyfire states 4500 W and owners still describe limited warmth, especially in wind. CTSC has no heat-output figure in this capture, and 3.4 from 70 reviews includes more comments that warmth escapes up the flue.
Will it damage decking?
Use a non-combustible base and check the ember risk before you stand the heater on decking. Paving, stone or a steel plate is the starting point. Add a fire mat only if the manufacturer allows it, and keep combustible furniture back from the column. Reviews mention fireproof bases and careful placement for this reason.
How long does a fill last?
The onlyfire listing claims about 120 minutes from a 2.8 kg fill. A UK reviewer cited roughly 90 minutes, which is plausible if the load, the pellets and the wind differ. Plan on a one-to-two-hour band per fill, then a reload and a relight if you want longer. It is not an all-night heater on one fill.
Pellet patio heater or a gas mushroom heater?
A gas mushroom heater generally wins on raw heat and on not handling bags of pellets. A pellet tower wins on a visible wood flame, and on fuel you may already store for a stove. Buy the pellet heater for ambience at close range on a still evening. Buy gas if the job is to warm a table of people.

Related pages

Pellet heating buying guide

Pellet heating

Best wood pellets for pellet stove UK: live prices

Smoke control area pellet stove UK and Defra exempt

How to store wood pellets in the UK: bags and feed

Sources

Public UK sources named below. amazon.co.uk prices, stars and review counts on these ten listings were taken from the listing files. Page updated October 2026.

  1. ENplus FAQ (UK) (retrieved 21 October 2026)
  2. ENplus consumers (UK) (retrieved 21 October 2026)
  3. Biomass Suppliers List fuel quality (retrieved 21 October 2026)
  4. GOV.UK smoke control area rules (retrieved 21 October 2026)
  5. Defra exempt appliance search (retrieved 21 October 2026)
  6. Ofgem BUS installer guidance V4.2 (retrieved 21 October 2026)
  7. MCS biomass product requirements (MCS-008) (retrieved 21 October 2026)
  8. GOV.UK buying green heating consumer guide (retrieved 21 October 2026)