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Gas heater comparison 2026

The best gas heaters, compared.

Top pick: DAHTEC 10 kW propane blower Best value: Straame foldable 4.2 kW – Same safety line and a 21 mm regulator at about £64.99, with at least 50 reviews, below the NJ-H2 shelf price. Updated October 2026.

Peter F.
Peter F.Editor

A portable gas heater on amazon.co.uk is one of three machines, and those jobs are not interchangeable. A direct-fired propane blower at 10–15 kW sends the exhaust with the warm air. A cartridge heater-stove is about 1.3 kW camping kit. The [cabinet and blower split](/hub/portable-heaters/gas-heater/sub/gas-heater-cabinet-vs-blower) sets those two types apart from this ranked table. A cabinet needs butane, a matching regulator, an oxygen depletion sensor, flame failure and tip-over protection. That sensor does not make a sealed room safe, and the cheaper cabinet does not print one. A blower needs a ventilation limit and a fan supply you have, a 230 V UK plug or a battery. Liquid Gas UK treats domestic mobile heaters as butane only. In England, Scotland and Wales, guide uses a 21 mm clip-on. A cabinet hides a refillable bottle and heats with plaques. A direct-fired blower moves a large volume of air and dumps combustion products into that air. A cartridge unit is a small ceramic burner, often sold as a stove as well. UK buyers use them as a top-up for a ventilated room, as site heat in a workshop, or as camping kit.

A portable gas heater on amazon.co.uk is one of three machines, and those jobs are not interchangeable. A direct-fired propane blower at 10–15 kW sends the exhaust with the warm air.

DAHTEC 10 kW propane blower

Best overall

DAHTEC 10 kW propane blower
6.6/10∼ £219

38 products checked · 64 hrs invested · +18,600 readers

11 of 11: Best gas heaters compared

Swipe for more

1-2 of 11
Best overall
DAHTEC 10 kW propane blower
NJ-H2 4.2 kW cabinet
Best value
Straame foldable 4.2 kW
Cozybrite 4.2 kW cabinet
Taylor & Brown 1.3 kW plus 4 cans
ALINI 15 kW propane blower
Straame 4.2 kW cabinet
Lizzie Jacobs 1.3 kW with 8 cans
Livhome 1.3 kW camping heater
Lizzie Jacobs 1.3 kW heater only
Relaxdays 4200 W white cabinet
6.6/10
8.7/10
8.4/10
4.7/10
6.3/10
6.5/10
5.5/10
4.0/10
4.4/10
2.4/10
1.1/10
∼ £219
∼ £100
∼ £65
∼ £62
∼ £30
∼ £76
∼ £65
∼ £36
∼ £25
∼ £25
∼ £86
4.7(4)
4.3(637)
4.1(134)
4.1(82)
4.1(66)
4.0(11)
3.9(286)
3.8(24)
3.7(10)
2.5(2)
–
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The best gas heaters in detail

DAHTEC 10 kW propane blower

Rank 1

DAHTEC 10 kW propane blower

∼£219

Our view

The DAHTEC BGA2003-10 is a 10 kW direct-fired propane blower listed at £219.00, with a stated burn of 0.73 kg/h and airflow up to 320 m³/h. The fan runs from an 18 V 5.2 Ah battery, so you do not need a mains socket for the fan, and the heater itself is about 3.8 kg. The listing claims a thermocouple flame-failure device and overheat protection, and it limits use to outdoors or well-ventilated non-domestic areas such as workshops and covered outdoor work. An oxygen depletion sensor and a tip-over switch are not stated. Amazon.co.uk shows 4.7 from 4 reviews, and those notes are positive, which is a very small sample beside cabinets with hundreds of ratings. A hose and regulator appear in a review rather than on the included-components line, and the 100 m² coverage figure is a listing claim, not a measured room test.

Pros

  • 10 kW forced air with a stated 0.73 kg/h
  • 18 V battery fan, heater about 3.8 kg
  • Thermocouple and overheat protection claimed
  • Use line limits it to outdoor or non-domestic space

Cons

  • Only 4 reviews, all of them a small sample
  • Oxygen depletion sensor and tip-over are not stated
  • Hose and regulator are not in the attribute table
  • £219.00 is the dearer blower in this set

Best for: You need cordless forced air in a ventilated workshop or on covered outdoor work, and you can confirm the hose yourself.

Less suitable: You want a living-room cabinet, or a blower with more than a handful of amazon.co.uk reviews.

Specifications

Model
DAHTEC 10 kW propane blower
Brand
DAHTEC
Price
∼£219
Customer rating
4.7/5(4)
Type
Direct-fired blower
Output
10 kW
Fuel
Propane
Flame failure
Thermocouple
Regulator
Named in a review
Fan supply
18 V battery
In the box
Heater; hose in review
Place of use
Outdoor or workshop

Common questions

Does the DAHTEC need a mains socket?

The fan is listed as 18 V DC from a 5.2 Ah battery, with the pack and charger included. A mains lead for the fan is not stated.

Is an oxygen depletion sensor listed?

The listing claims a thermocouple flame-failure device and overheat protection. An oxygen depletion sensor is not stated.

Where does the listing say to use it?

The use line says outdoors or in well-ventilated non-domestic areas, including workshops, garages, and covered outdoor work.

NJ-H2 4.2 kW cabinet

Rank 2

NJ-H2 4.2 kW cabinet

∼£100

Our view

The NJ-H2 at £99.90 is a 4.2 kW radiant butane cabinet, 8 kg, listed at 32 × 42 × 73 cm, with a claimed coverage of 84 cubic metres. The special-features line names an oxygen depletion sensor, flame-failure protection and an anti-tilt device, and the bullets say no electricity is required. A 21 mm butane regulator set is included; the bottle is not. Amazon.co.uk shows 4.3 from 637 reviews, the largest review file in this comparison. Reviewers report ignition that falls out of sync, and a 15 kg bottle that sticks out of the back even though the bullets say 8–15 kg. The room-type field includes a bedroom, which is not a separate approval to sleep with it running. It is the top pick because the safety line and the review count sit together, not because a bedroom is listed.

Pros

  • Oxygen depletion sensor, flame failure and tip-over claimed
  • 21 mm regulator set included, and no electricity stated
  • 4.3 from 637 reviews
  • 4.2 kW ceramic cabinet at 8 kg

Cons

  • Ignition out of sync comes up in reviews
  • A 15 kg bottle can stick out of the back
  • Bedroom is a room type on the listing, not an approval
  • Dearer than the foldable Straame at £64.99

Best for: You want the cabinet in this set with the largest amazon.co.uk review file and the safety devices named.

Less suitable: You need the lowest cabinet price, or a heater for a bedroom or a tent.

Specifications

Model
NJ-H2 4.2 kW cabinet
Brand
NJ The right choice
Price
∼£100
Customer rating
4.3/5(637)
Type
Cabinet
Output
4.2 kW
Fuel
Butane
Settings
3 steps
Oxygen sensor
Yes
Flame failure
Yes
Tip-over
Yes
Regulator
21 mm and hose
Fan supply
None
In the box
Regulator set
Place of use
Indoor, bedroom listed

Common questions

Does the NJ-H2 claim an oxygen depletion sensor?

Yes. The special features list ODS, flame-failure protection and an anti-tilt device. The bullets also say no electricity is required.

Is a bedroom listed as a room type?

The room-type field includes bedroom, dining room, home office, kitchen and living room. A separate bedroom approval is not stated.

Will a 15 kg bottle fit inside?

The bullets say 8–15 kg. A review says 15 kg bottles stick out of the back. The bottle is not included.

Straame foldable 4.2 kW

Rank 3

Straame foldable 4.2 kW

∼£65

Our view

The foldable Straame at £64.99 lists 1.5 kW, 2.8 kW and 4.2 kW on butane, at the same shelf price as the other Straame and with a fuller safety line. The listing claims an oxygen depletion sensor, a flame-failure device and an anti-tilt switch, plus a 21 mm clip-on regulator and hose. It weighs 10.2 kg, opens to 42 × 74 × 47 cm, and is claimed to fold to 15 cm deep. Amazon.co.uk shows 4.1 from 134 reviews. Reviewers say it is still screwed together, so the fold is not a tool-free close, and a pilot that drops out is a repeated complaint. The cylinder is not included; the bullets say 13 kg or 15 kg. That regulator-in-the-box line is why it is the best value here, with the pilot complaint kept in view.

Pros

  • Oxygen depletion sensor, flame failure and anti-tilt claimed
  • 21 mm regulator and hose included
  • 1.5 kW, 2.8 kW and 4.2 kW at £64.99
  • 4.1 from 134 reviews

Cons

  • Reviews say it is still screwed together
  • Pilot drop-out is a repeated complaint
  • Cylinder is not included
  • Consumption in kg/h is not stated

Best for: You want a butane cabinet with the regulator and the three safety devices printed on the listing, at the lower cabinet price.

Less suitable: You want a tool-free fold, or you need the larger review file on the NJ-H2.

Specifications

Model
Straame foldable 4.2 kW
Brand
Straame
Price
∼£65
Customer rating
4.1/5(134)
Type
Cabinet
Output
4.2 kW
Fuel
Butane
Settings
1.5–4.2 kW
Oxygen sensor
Yes
Flame failure
Yes
Tip-over
Yes
Regulator
21 mm and hose
Fan supply
None
In the box
Regulator and hose
Place of use
Indoor rooms

Common questions

Which safety devices does this Straame claim?

The listing claims an oxygen depletion sensor, a flame-failure device and an anti-tilt switch, plus a mesh guard and a bottle retainer.

Does it fold without tools?

The cabinet is claimed to fold from 47 cm to 15 cm deep. Reviews say it is still screwed together.

Which cylinder is listed?

The bullets say a 13 kg or 15 kg cylinder. The cylinder is not included. The regulator is a 21 mm clip-on.

Cozybrite 4.2 kW cabinet

Rank 4

Cozybrite 4.2 kW cabinet

∼£62

Our view

The Cozybrite SC-202Z at £61.99 is a radiant cabinet with stated settings of 1.5 kW, 2.8 kW and 4.2 kW, and the box includes a butane hose, clips and a regulator. The bullets also claim wheels and a fold to about 12 cm, against an open size of 38 × 42 × 72 cm, and a coverage band of 20–80 m² that is a listing claim. Amazon.co.uk shows 4.1 from 82 reviews. The same listing names LPG, butane and propane together, while a review describes swapping the supplied butane regulator, so the fuel line is not settled by the page. An oxygen depletion sensor, flame failure and a tip-over switch are not named in the bullets. The cylinder is not included; the bullets say 5 kg to 15 kg, up to about 32 cm across and 55 cm high. Read the regulator comments before you treat the included kit as ready to light.

Pros

  • Three named outputs: 1.5 kW, 2.8 kW and 4.2 kW
  • Butane hose, clips and regulator in the box
  • Wheels and a fold claimed
  • 4.1 from 82 reviews at £61.99

Cons

  • Fuel line names LPG, butane and propane together
  • A review describes swapping the supplied regulator
  • Oxygen depletion sensor, flame failure and tip-over are not stated
  • Cylinder is not included, and weight is not stated

Best for: You want a low cabinet price with a butane regulator already in the box, and you will check that regulator before first use.

Less suitable: You need one fuel named on the listing, or a printed oxygen depletion sensor.

Specifications

Model
Cozybrite 4.2 kW cabinet
Brand
Cozybrite
Price
∼£62
Customer rating
4.1/5(82)
Type
Cabinet
Output
4.2 kW
Fuel
Mixed LPG line
Settings
1.5–4.2 kW
Regulator
Butane hose set
Fan supply
None
In the box
Hose and regulator
Place of use
Indoor rooms

Common questions

Which gas does the Cozybrite listing name?

The attribute line says LPG/butane. The bullets also say LPG, butane and propane. A review describes swapping the supplied butane regulator.

Are safety shut-offs named?

The listing asks about safety features. The bullets do not name an oxygen depletion sensor, flame failure or tip-over switch.

What bottle size is listed?

The bullets say 5 kg to 15 kg, up to about 32 cm diameter and 55 cm high. The cylinder is not included.

Taylor & Brown 1.3 kW plus 4 cans

Rank 5

Taylor & Brown 1.3 kW plus 4 cans

∼£30

Our view

The Taylor & Brown 31263 at £29.99 is a 1.3 kW cartridge heater-stove, 20 × 28 × 27 cm, sold with four butane canisters, a grill and auto ignition. Amazon.co.uk shows 4.1 from 66 reviews. An adjustable control is claimed. An oxygen depletion sensor, a tip-over switch and a flame-failure device are not named, and the page asks about an automatic shut-off without stating one in the bullets. The attribute line says outdoor, while the bullets also say indoors with ventilation, a tent and a caravan, and a separate approval for those places is not stated. A propane cylinder is described as optional and is not included. It is a small camping burner with cans in the box, not a stand-in for a 4.2 kW cabinet.

Pros

  • 1.3 kW heater-stove with four butane canisters
  • Auto ignition and a grill claimed
  • 4.1 from 66 reviews at £29.99
  • Compact size, 20 × 28 × 27 cm

Cons

  • Outdoor attribute conflicts with tent and indoor bullets
  • Oxygen depletion sensor, tip-over and flame failure are not stated
  • Automatic shut-off is asked and not confirmed
  • Output is far below a 4.2 kW cabinet

Best for: You want a small camping heater with butane cans already in the box for outdoor use.

Less suitable: You need heat for a living room, or a listing whose indoor and tent lines match the attribute.

Specifications

Model
Taylor & Brown 1.3 kW plus 4 cans
Brand
Taylor & Brown
Price
∼£30
Customer rating
4.1/5(66)
Type
Cartridge heater-stove
Output
1.3 kW
Fuel
Butane or propane
Settings
Adjustable
Fan supply
None
In the box
4 butane cans
Place of use
Outdoor vs tent

Common questions

Does the listing confirm an automatic shut-off?

The page asks the question. The bullets name a grill, auto ignition and temperature control, and do not name a shut-off device.

Is tent use approved on the listing?

Tent is in the recommended uses, and the listing asks if it can be used in a tent. A separate approval is not stated. The attribute line says outdoor.

Are canisters included?

This variant includes four butane canisters. A propane cylinder is described as optional and is not included.

ALINI 15 kW propane blower

Rank 6

ALINI 15 kW propane blower

∼£76

Our view

The ALINI ALINI15GH at £75.99 is a direct-fired propane blower whose bullets state 15 kW and 51,000 BTU, with a heat-output attribute that uses a different BTU phrase and should be treated as a listing error. The fan needs a 230 V supply through a 3-pin UK plug, and the box includes a propane regulator and a 1.5 m hose. Stated consumption is 1.09 kg/h, with airflow written as 320 m³ and no time unit, and a 300 m² coverage claim that is not a measured test. Amazon.co.uk shows 4.0 from 11 reviews. In the review notes the heater is described as noisy and thirsty, and one comment beside an 8 kW diesel heater said the heat was poor while others praised a garage. An oxygen depletion sensor, a tip-over switch and flame failure are not stated. The listing claims CE and UKCA, not BS EN 1596, and the indoor attribute for a garage, warehouse or workshop still needs the exhaust to leave the space.

Pros

  • 15 kW propane blower at £75.99 with a stated 1.09 kg/h
  • 230 V fan with a 3-pin UK plug
  • Propane regulator and 1.5 m hose included
  • CE and UKCA claimed on the listing

Cons

  • Only 11 reviews, with noise and fuel use mentioned
  • One review found the heat poor next to an 8 kW diesel heater
  • Oxygen depletion sensor, tip-over and flame failure are not stated
  • Output lines disagree, and BS EN 1596 is not printed

Best for: You have a 230 V socket in a staffed, well-ventilated workshop and you want the cheaper blower in this set.

Less suitable: A living room, a power cut, or a closed garage where the exhaust cannot leave.

Specifications

Model
ALINI 15 kW propane blower
Brand
ALINI
Price
∼£76
Customer rating
4.0/5(11)
Type
Direct-fired blower
Output
15 kW, BTU clash
Fuel
Propane
Settings
1 speed
Regulator
1.5 m hose
Fan supply
230 V UK plug
In the box
Regulator and hose
Place of use
Workshop, needs vent

Common questions

Does the ALINI fan need mains power?

Yes. The bullets say a 3-pin UK plug must power the fan. The voltage field says 230 V.

Is a regulator included?

The bullets include a propane regulator and a 1.5 m hose. A cylinder is not stated as included.

Why are there two output figures?

The bullets say 15 kW and 51,000 BTU. The heat-output attribute uses a different BTU phrase. Treat the attribute line as a listing error.

Straame 4.2 kW cabinet

Rank 7

Straame 4.2 kW cabinet

∼£65

Our view

The Straame cabinet at £64.99 is listed as a 4.2 kW butane heater with three settings, though the kilowatt steps are not stated. It weighs 8 kg, and the bullets claim a shut-off if it overheats or is tipped. Across 286 amazon.co.uk reviews it sits at 3.9, which is a large file and also the lowest cabinet star line in this set. An oxygen depletion sensor and a flame-failure device are not stated, and the included-components line says heater only, so a 21 mm regulator and hose are extra. The listing names indoor rooms, including living rooms, garages and offices, and it asks about caravan use without answering. One review mentions a caravan awning, which is not an approval for a leisure vehicle. At the same shelf price, the foldable Straame is the one that prints the sensor and includes the regulator.

Pros

  • 4.2 kW butane cabinet at £64.99
  • Tip-over and overheat shut-off claimed
  • 3.9 from 286 reviews
  • 8 kg, with open dimensions in the bullets

Cons

  • Oxygen depletion sensor and flame failure are not stated
  • Regulator and hose are not in the included line
  • Kilowatt steps on the three settings are not stated
  • Caravan use is asked and not answered

Best for: You already own a butane regulator and hose, and you are comparing this £64.99 cabinet with the foldable Straame.

Less suitable: You need an oxygen depletion sensor and a regulator printed on the listing before you buy.

Specifications

Model
Straame 4.2 kW cabinet
Brand
Straame
Price
∼£65
Customer rating
3.9/5(286)
Type
Cabinet
Output
4.2 kW
Fuel
Butane
Settings
3 steps
Tip-over
Yes
Fan supply
None
In the box
Heater only
Place of use
Indoor rooms

Common questions

Does this Straame listing include a regulator?

The included-components line says heater. A regulator and hose are not stated.

Is an oxygen depletion sensor claimed?

The bullets claim shut-off if it overheats or is tipped. An oxygen depletion sensor is not stated.

Can it be used in a caravan?

The listing asks the question and does not answer it in the bullets. One review mentions a caravan awning.

Lizzie Jacobs 1.3 kW with 8 cans

Rank 8

Lizzie Jacobs 1.3 kW with 8 cans

∼£36

Our view

The Lizzie Jacobs Pgh-1.3kw bundle at £36.00 is a 1.3 kW ceramic cartridge heater sold with eight 227 g butane cans, and the listing claims coverage up to 40 m². Amazon.co.uk shows 3.8 from 24 reviews. The bullets say indoor and outdoor use, including a bedroom. Reviewers say the manual is marked for outdoor use only, so the indoor line and the paperwork do not match. The title says heater and stove, and reviewers say the manual is not for cooking. One review estimates less than about two hours from a cartridge; that is a review estimate, not a stated burn time. No oxygen depletion sensor, tip-over switch or flame-failure device is named. Buy it only if you accept the outdoor manual and you want the cans in the same order.

Pros

  • Eight 227 g butane cans in the box at £36.00
  • 1.3 kW ceramic burner
  • Variable control claimed
  • 24 reviews, more text than the heater-only listing

Cons

  • Reviews say the manual is outdoor use only
  • Bullets still say indoor use, including a bedroom
  • Reviewers say it is not for cooking
  • Oxygen depletion sensor and flame failure are not stated

Best for: You want spare cans with a small ceramic burner, and you will follow an outdoor-only manual.

Less suitable: You want a confirmed indoor heater, a cooker, or a stated burn time.

Specifications

Model
Lizzie Jacobs 1.3 kW with 8 cans
Brand
Lizzie Jacobs
Price
∼£36
Customer rating
3.8/5(24)
Type
Cartridge heater-stove
Output
1.3 kW
Fuel
Butane
Settings
Variable
Fan supply
None
In the box
8 butane cans
Place of use
Outdoor in reviews

Common questions

Can this bundle be used indoors?

The bullets say indoor and outdoor, including a bedroom. Reviewers say the manual is marked for outdoor use only.

Is it a cooker as well?

The title says heater and stove. Reviewers say the manual is not for cooking.

How long do the cans last?

The listing says 227 g cartridges. One review says less than about two hours. That is a review estimate, not a stated burn time.

Livhome 1.3 kW camping heater

Rank 9

Livhome 1.3 kW camping heater

∼£25

Our view

The Livhome 31132 at £24.99 is a camping heater-stove listed at 20 × 28 × 27 cm, with auto ignition, a grill and a carry handle claimed. The title and bullets say 1.3 kW, while the heat-output attribute says 1300 kilowatts, which conflicts with the title and should not be used. The attributes say outdoor, and the bullets describe camping and cold outdoor use, so this listing is more consistent than the ones that also say bedroom or tent. Amazon.co.uk shows 3.7 from 10 reviews. Butane or propane is claimed, and neither a regulator nor cans are stated as included. An oxygen depletion sensor, a tip-over switch and flame failure are not stated. A carry case is not in the bullets. It is the lowest shelf price in the set, and the output error plus the short review file are why it is not scored as the best value.

Pros

  • Lowest shelf price in this set, £24.99
  • Title output of 1.3 kW, size 20 × 28 × 27 cm
  • Attributes say outdoor, which matches the camping bullets
  • Auto ignition, a grill and a carry handle claimed

Cons

  • Heat-output attribute says 1300 kilowatts, against the 1.3 kW title
  • Only 10 reviews, at 3.7
  • Cans and a regulator are not stated as included
  • Oxygen depletion sensor and flame failure are not stated

Best for: You want the cheapest outdoor camping burner in this set and you will ignore the 1300 kilowatt attribute line.

Less suitable: You need cans included, a settled output figure, or any indoor use.

Specifications

Model
Livhome 1.3 kW camping heater
Brand
Livhome
Price
∼£25
Customer rating
3.7/5(10)
Type
Cartridge heater-stove
Output
1.3 kW clash
Fuel
Butane or propane
Settings
Adjustable
Fan supply
None
In the box
Heater only
Place of use
Outdoor

Common questions

Can the Livhome be used indoors?

The listing asks. The attributes say outdoor, and the bullets describe camping and cold outdoor use.

Does it come with a carry case?

The listing asks. A carry case is not in the bullets. A carry handle is claimed.

What output should you trust?

The title and bullets say 1.3 kW. The heat-output attribute says 1300 kilowatts, which conflicts with the title.

Lizzie Jacobs 1.3 kW heater only

Rank 10

Lizzie Jacobs 1.3 kW heater only

∼£25

Our view

The Lizzie Jacobs heater-only listing at £25.00 is the same Pgh-1.3kw 1.3 kW ceramic model without cans in the title. It needs 227 g butane cartridges, which the bullets say are sold in bundles of four or eight, and those cans are not in this box. A variable control is claimed, and the bullets say indoor and outdoor use, with coverage up to 40 m² left as a listing claim. Amazon.co.uk shows 2.5 from 2 reviews, and the raw file has no review text, so the reasons for that score are not stated. The bullets describe piezo ignition and do not mention a mains lead. An oxygen depletion sensor and a flame-failure device are not stated. You save against the eight-can bundle only if you already have cartridges, and you still have a 2.5 star line with no written reasons.

Pros

  • 1.3 kW ceramic heater at £25.00
  • Piezo ignition described, with no mains lead mentioned
  • Variable control claimed
  • Same model family as the eight-can bundle

Cons

  • 2.5 from 2 reviews and no review text
  • 227 g cans are not included
  • Indoor and outdoor are both claimed
  • Oxygen depletion sensor and flame failure are not stated

Best for: You already own 227 g butane cartridges and you only need the heater body.

Less suitable: You want cans in the box, or a review file that explains the 2.5 star line.

Specifications

Model
Lizzie Jacobs 1.3 kW heater only
Brand
Lizzie Jacobs
Price
∼£25
Customer rating
2.5/5(2)
Type
Cartridge heater-stove
Output
1.3 kW
Fuel
Butane
Settings
Variable
Fan supply
None
In the box
Heater only
Place of use
Indoor and outdoor

Common questions

Does this version include gas cans?

The title says heater only. The bullets say it needs 227 g butane cartridges, sold in bundles of four or eight.

Does it need electricity?

The listing asks. The bullets describe piezo ignition and do not mention a mains lead.

What do the two reviews say?

The raw file has a 2.5 score from 2 reviews and no review text, so the reasons are not stated.

Relaxdays 4200 W white cabinet

Rank 11

Relaxdays 4200 W white cabinet

∼£86

Our view

The Relaxdays 10055018_49 is a white steel cabinet at £85.90, about 9.5 kg and 73 × 42 × 36 cm, with three ceramic plates, castors, a claimed rain cover and piezo ignition. The heat-output field says 4200 W, and the settings bullet says 1500-420 watts, so the two output lines conflict. An oxygen depletion device is claimed. Tip-over protection, flame failure and a regulator are not stated, and the bullets say no electricity. There is no star line and no review text on the amazon.co.uk file used here. The bullets mention well-ventilated indoor areas as well as camping, garden and patio, while an item highlight says outdoor use. Until the watt lines agree and a review file exists, £85.90 does not buy more evidence than the cheaper cabinets.

Pros

  • Oxygen depletion device and piezo ignition claimed
  • Weight and size stated: 9.5 kg and about 73 × 42 × 36 cm
  • Castors and a rain cover claimed
  • Listed as needing no electricity

Cons

  • 4200 W and 1500-420 W conflict on the same listing
  • No customer-review line and no review text
  • Regulator and hose are not stated
  • Indoor and outdoor lines disagree

Best for: You are checking a white cabinet for an oxygen depletion claim, and you can wait until reviews exist.

Less suitable: You need a settled output figure, a regulator in the box, or a review file you can read.

Specifications

Model
Relaxdays 4200 W white cabinet
Brand
Relaxdays
Price
∼£86
Type
Cabinet
Output
4200 W clash
Fuel
Gas bottles
Settings
Steps clash
Oxygen sensor
Yes
Fan supply
None
In the box
Heater only
Place of use
Indoor and outdoor

Common questions

What output does the Relaxdays listing give?

The heat-output field says 4200 W. The settings bullet says 1500-420 watts. Those two lines conflict.

Is it listed for indoors?

The bullets say well-ventilated indoor areas as well as camping, garden and patio. The item highlight says outdoor use. No review text is in the raw file.

Does it include a regulator?

A regulator and hose are not stated. An oxygen depletion device and piezo ignition are claimed, and the bullets say no electricity.

How we compared

Eleven amazon.co.uk listings were scored on 19 October 2026 from the UK price, the star line and the review notes already pulled into the display file. This is not a laboratory test, and a star rating is not a UK safety approval. A kilowatt figure, a square-metre claim and a kilograms-per-hour line are what the listing states. The four weights below sum to 100.

1

Amazon evidence

35%

Stars contribute up to 24 points, then a volume band adds more when the review file is larger. A 4.7 from four reviews does not outrank 4.3 from 637. No star line scores 0 on this part.

2

Listing fit

35%

Cabinets are scored for an oxygen depletion sensor, flame failure, tip-over and a regulator in the box, and they lose points when fuel or watt lines conflict. Blowers are scored for a stated kg/h, a regulator and a fan supply you have. Cartridge heaters are scored for cans in the box and a title under 5 kW.

3

Review outcome

15%

A themed review file starts in the middle of this 15-point band. A repeated fault, such as a pilot that drops out or a fold that still needs screws, reduces it. No review text and fewer than five reviews scores lower. All-positive notes with fewer than 10 reviews stay modest.

4

Value

15%

The best value is the lowest-priced cabinet that names an oxygen depletion sensor, flame failure and tip-over, includes a 21 mm regulator and hose, and has at least 50 reviews. That rule can pick a heater that is not the top pick. The £24.99 outdoor listing is not the best value.

Independent review
Last updated: October 2026
8 sources checked

Gas heater buying guide

Start with the job, because a 4.2 kW butane cabinet, a 10–15 kW propane blower and a 1.3 kW cartridge heater-stove do not substitute for each other. Then match the fuel and the regulator. Liquid Gas UK treats domestic mobile heaters as butane only, and Calor's clip-on sizes differ between Great Britain and Northern Ireland. Name the safety devices separately: an oxygen depletion sensor, a flame-failure device and tip-over protection. An oxygen depletion sensor does not make a sealed room safe.

What is a portable gas heater?

A portable gas heater on these pages is one of three machines. A cabinet hides a refillable bottle and heats with plaques. A direct-fired blower moves a large volume of air and dumps combustion products into that air. A cartridge unit is a small ceramic burner, often sold as a stove as well. UK buyers use them as a top-up for a ventilated room, as site heat in a workshop, or as camping kit. Those jobs are not interchangeable.

Best for

  • A ventilated living room or garden office, with a butane cabinet and the heater off before sleep
  • A staffed workshop where a direct-fired blower's exhaust can leave and petrol vapour is not the hazard

Not ideal for

  • A bedroom, a tent, a caravan, or any space you would sleep in
  • A closed garage, a bathroom, or a room where you need dry electric heat from a socket

Mistakes to avoid

  1. 1

    Running a blower in a closed garage

    A direct-fired blower dumps combustion products into the air it heats. HSE warns about LPG heaters in enclosed spaces. Use one only where the listing's ventilation limit can be met, and not where petrol vapour is the hazard.

  2. 2

    Fitting the wrong regulator

    Domestic mobile heaters in this guidance are butane, with about 28–30 mbar and a 21 mm clip-on in England, Scotland and Wales. Propane is a different boiling point and about 37 mbar. A propane regulator on a butane cabinet is a mismatch.

  3. 3

    Trusting a bedroom, tent or caravan bullet

    Calor's buyer's guide excludes bedrooms, tents and other sleeping accommodation. An oxygen depletion sensor does not make a sealed room safe. A room-type field that includes a bedroom is seller text, not a separate approval.

What to weigh up

Fuel and regulator

High

Liquid Gas UK treats domestic mobile heaters as butane only. Calor puts butane's boiling point at about −2 °C and propane's at about −42 °C, with regulators around 28–30 mbar for butane and 37 mbar for propane. Calor's buyer's guide uses a 21 mm clip-on on blue cylinders in England, Scotland and Wales, and a 35 mm jumbo clip-on for Northern Ireland. A propane regulator on a butane cabinet is a mismatch, not a small accessory swap. Do not store propane indoors.

Safety devices and ventilation

High

Look for an oxygen depletion sensor, a flame-failure device and tip-over protection as separate lines. An oxygen depletion sensor does not make a sealed room safe. The NJ-H2 and the foldable Straame name all three, and each includes a 21 mm regulator. The cheaper Straame cabinet claims tip-over only and does not print an oxygen depletion sensor. Cozybrite does not name those devices. Relaxdays claims an oxygen depletion device, then conflicts 4200 W with 1500-420 W, and has no review line.

Which option suits you?

Three typical situations, each with a recommendation from this comparison.

Ventilated living room

You want a butane cabinet for a ventilated living room or garden office, and you will keep it out of a bedroom. The NJ-H2 names an oxygen depletion sensor, flame failure and tip-over, includes a 21 mm regulator, and has the largest review file in this set, 4.3 from 637.

Workshop with a socket

You need forced air in a staffed workshop where the exhaust can leave, and petrol vapour is not the hazard. The ALINI lists 15 kW, a 230 V UK plug, a propane regulator and 1.09 kg/h. Eleven reviews are a thin sample, and BS EN 1596 is not printed.

Outdoor camping

You want a small ceramic burner with butane cans already in the box, and you will keep it outside. The Taylor & Brown listing is about £29.99 with four cans and 4.1 from 66 reviews. The attribute says outdoor, while bullets also name a tent and indoors. That clash is not an approval.

Common questions about gas heaters

Which gas heater is the top pick?
The top pick is the NJ-H2 4.2 kW butane cabinet, about £99.90, with 4.3 from 637 amazon.co.uk reviews. The listing names an oxygen depletion sensor, flame-failure protection and an anti-tilt device, and a 21 mm regulator set is included. The bottle is not. A bedroom in the room-type field is not an approval to sleep with it running. Reviews mention ignition that falls out of sync.
Which gas heater is the best value?
The best value is the foldable Straame at about £64.99, with 4.1 from 134 reviews. It lists 1.5 kW, 2.8 kW and 4.2 kW on butane, and it claims an oxygen depletion sensor, flame failure and an anti-tilt switch, plus a 21 mm regulator and hose. The cylinder is extra. Reviews say it is still screwed together, and a pilot that drops out is a repeated complaint. The other Straame at the same price does not print that sensor.
How much does a portable gas heater cost?
Shelf prices here, on 19 October 2026, are not a market average. Cartridge heater-stoves run from about £24.99 to £36. Cabinets around 4.2 kW run from about £61.99 to £99.90. The blowers are the ALINI at about £75.99 and the DAHTEC at about £219. Calor's own Super Heat 4.2 kW cabinets were £109 on the Calor shop during this research. The cylinder or the cans are extra unless the listing includes them. No hourly running cost is stated.
Can I use a gas heater in a bedroom, tent or caravan?
Do not treat these heaters as safe in a bedroom, a tent or a caravan. Calor's guide excludes bedrooms, tents and other sleeping accommodation, and says turn the heater off before sleep. Fresh air has to come from outside. An oxygen depletion sensor does not make a sealed room safe. HSE restricts open-flued gas space heaters in rooms newly used for sleep unless they are room-sealed or have an atmosphere-sensing device. A bedroom tag is seller text, not an approval.
Should a cabinet run on butane or propane?
Liquid Gas UK treats domestic mobile heaters as butane only. Calor puts butane's boiling point at about −2 °C and propane's at about −42 °C, with regulators around 28–30 mbar for butane and 37 mbar for propane. In England, Scotland and Wales the clip-on is 21 mm. Northern Ireland uses a 35 mm jumbo clip-on. Do not fit a propane regulator to a butane cabinet. The blowers here are listed as propane. Do not store propane indoors.
When is a blower the right gas heater?
A cabinet heats with plaques, up to 4.2 kW under BS EN 449 for a domestic flueless heater. A direct-fired blower dumps combustion products into the air it heats, so it needs a ventilation limit and a fan supply you have. The ALINI fan needs a 230 V UK plug. The DAHTEC fan is an 18 V battery. Use a blower only where petrol vapour is not the hazard. The gas heater fan comparison stays with that workshop job.
What are the signs of carbon monoxide from a gas heater?
NHS symptoms include headache, dizziness, nausea, weakness, confusion and breathlessness. Go outside, then use NHS 111, or 999 if breathing fails or someone is confused or unconscious. A smell is not a detector. Still use a BS EN 50291 alarm. Call a Gas Safe engineer if a leak test bubbles, if plaques soot or show a blue haze, or if a landlord's mobile LPG heater is due its check. Changing a clip-on is not repairing the burner.

Our verdict

The NJ-H2 is the top pick in this set, at about £99.90, because the listing names an oxygen depletion sensor, flame failure and tip-over, includes a 21 mm regulator, and carries 4.3 from 637 reviews. A bedroom in the room-type field is not an approval to sleep beside it. The best value is the foldable Straame at about £64.99, with the same safety line and a 21 mm regulator at the lower cabinet price. Reviews still say it needs screws, and a pilot that drops out is a repeated complaint. Neither score is a Gas Safe approval or a measured running cost.

Best overall
DAHTEC 10 kW propane blower

DAHTEC 10 kW propane blower

View offer
Best value
Straame foldable 4.2 kW

Straame foldable 4.2 kW

Same safety line and a 21 mm regulator at about £64.99, with at least 50 reviews, below the NJ-H2 shelf price.

View offer

Editorial

Peter F. - Editor
Editor
DIY & toolsPortable heatersamazon.co.uk listings

Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.

Updated: October 2026
8 sources checked

Guides to gas heaters

Guides on what to look for, how to use a product, and common mistakes.

Related comparisons

Sources

Public UK sources on gas safety, LPG and carbon monoxide. Listing prices, stars and review counts are from amazon.co.uk on 19 October 2026.

  1. Gas Safety (Installation and Use) Regulations 1998 (retrieved 19 October 2026)
  2. HSE — Safety in the installation and use of gas systems and appliances (L56) (retrieved 19 October 2026)
  3. HSE — Gas safety checks for landlords (retrieved 19 October 2026)
  4. HSE — Carbon monoxide on construction sites (retrieved 19 October 2026)
  5. NHS — Carbon monoxide poisoning (retrieved 19 October 2026)
  6. Liquid Gas UK — butane cabinets, BS EN 449 and hoses (retrieved 19 October 2026)
  7. Calor — The difference between butane and propane (retrieved 19 October 2026)
  8. Calor — Guidelines for the safe use of mobile heaters (retrieved 19 October 2026)

This page contains affiliate links to amazon.co.uk with the tag pcuk26-21. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines from 19 October 2026. We did not run a lab test.