The best gas greenhouse heaters, compared.
Top pick: Bimson Power 15 kW – Same 4.7 star ratio as the DAHTEC, with 24 ratings at about £119.99, for a ventilated workspace that already has a socket. Best value: Not awarded – No other listing has a lower price and a score of at least 50. The DAHTEC is £219.00, and the £169.99 row has no star line. Updated October 2026.
A gas greenhouse heater burns bottled LPG and leaves the combustion products in the same air as the plants unless it has a flue. The Royal Horticultural Society treats electricity as the first choice when a professional can install a supply, and gas or paraffin as the fallback where there is no socket, because burning them releases water, ethylene and carbon monoxide and you have to ventilate. Purpose-built greenhouse heaters are about 2 kW to 4 kW. How a 2–4 kW heater differs from these blowers is in the [gas greenhouse heater buying guide](/hub/heating/gas-greenhouse-heater/sub/gas-greenhouse-heater-buying-guide). On amazon.co.uk the phrase covers two different tools. Those are shop prices, not amazon.co.uk prices, and those heaters are not in this set. Electric heaters, camping stoves and indoor cabinet heaters were dropped as the wrong product. They are sold for garages and workshops and only additionally named for a greenhouse. Gas suits H2 or hardier plants only if the house is open, not tender crops in a sealed house. A 10–15 mm roof-vent crack is a retailer’s practice for a 2 kW heater, not a rule for a 10 kW, 15 kW or 30 kW blower.
A gas greenhouse heater burns bottled LPG and leaves the combustion products in the same air as the plants unless it has a flue.
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Personal buying guide
Question 1 of 2
Where will the heater stand?
The Bimson Power 15 kW, part BP-G15T, is a propane blower listed at £119.99 with a stated output of 7–15 kW and a coverage claim of up to 300 m³. Across 4.7 from 24 amazon.co.uk ratings, the notes describe garages, a workshop, and a barn, and they say the space has to stay ventilated. The fan is corded: the bullets name a pre-fitted 13 A plug, and reviews say it will not run where there is no socket. A propane hose and regulator are in the box, while the bullets also name butane, so the winter fuel is not a free swap. The only cut-out in the special-features line is overheat protection, and no oxygen-depletion sensor is named. Recommended uses include garage, greenhouse, and home, but that home line does not make a sealed room safe, and reviews say not to point the outlet at anything flammable. In this set it is the top pick when a socket is already there and someone will keep the space open.
Pros
Cons
Best for: A ventilated garage, workshop, or barn that already has a 13 A socket, with someone present while it runs.
Less suitable: A small closed glasshouse, an allotment with no mains, or overnight use in a sealed house.
Specifications
Common questions
Does this listing name a greenhouse?
Yes. Recommended uses include garage, greenhouse, and home, and the bullets name greenhouses among other spaces. Reviews describe garages, a workshop, and a barn, and say the space must be ventilated.
Does the fan need mains power?
The power-source field says corded electric, and the bullets say a pre-fitted 13 A UK plug. Reviews say it will not run where there is no socket. The cylinder is separate.
What safety cut-out is named?
Special features include overheat protection. No oxygen-depletion sensor is named in the listing data. Reviews say not to point the outlet at anything flammable.
The DAHTEC BGA2003-10 is a 10 kW propane blower listed at £219.00, with 4.7 from four amazon.co.uk ratings. The fan runs from an included 18 V, 5.2 Ah battery, so the airflow does not need a mains lead at the heater, though a review describes a three-pin charger and the heat still comes from a propane bottle. The listing states 0.73 kg/h, airflow up to 320 m³/h, a coverage field of 100 m², IPX4, and a weight of about 3.8 kg. It names a thermocouple that shuts the gas if the flame goes out, plus overheat protection, and it says to use the heater only outdoors or in well-ventilated non-domestic areas. The reviews describe garages, not a crop house. Four ratings are too few to treat 4.7 as a settled score, and a review lists a hose and regulator while the bullet names the battery and charger. It is the one to look at when you cannot plug in a fan and the space stays open, and it is a poor match for a small sealed glasshouse.
Pros
Cons
Best for: An outdoor or well-ventilated non-domestic space where you cannot run a mains fan lead.
Less suitable: A sealed greenhouse, a seedling house, or anyone reading four ratings as a large sample.
Specifications
Common questions
Is it for a greenhouse?
Greenhouse is one of the recommended uses. The same listing says use it only outdoors or in well-ventilated non-domestic areas. Reviews describe garages, not a crop house.
Does the fan need a mains socket?
The fan runs from an 18 V, 5.2 Ah battery, and the battery and charger are included. A review describes a three-pin charger. The heat still comes from a propane bottle.
What cut-outs does the listing name?
It names a thermocouple that shuts the gas if the flame goes out, and overheat protection. It also prints IPX4. No oxygen-depletion sensor is named.
The Bimson Power 30 kW, part BP-G35T, is listed at £169.99 with a stated output of 12–30 kW and a coverage claim of up to 700 m³. The file has no star line and no review text, so there is no amazon.co.uk account of how it behaved in a greenhouse or a barn. The bullets claim up to six hours on a 13 kg bottle at full load, the shortest full-load claim in this set, and they include a propane hose and regulator while stating that the butane regulator is not included. Spark ignition and a pre-fitted 13 A plug appear in the bullets, but the power-source field says propane and does not mention the plug, so both lines stay unresolved. The listing weight is 7.17 kg, and the named cut-out is overheat protection. Recommended uses again include garage, greenhouse, and home, with a bullet that says well-ventilated areas. You would look at it only for a large open workspace, and you would be buying a listing that has not been reviewed.
Pros
Cons
Best for: A large ventilated workshop, if you accept an unreviewed listing and you already have a 13 A socket.
Less suitable: A 6×8 ft glasshouse, any closed house, or a buyer who wants UK review evidence before they pay.
Specifications
Common questions
Can the listing be used in a greenhouse?
The recommended-use field says garage, greenhouse, and home. The bullets also say well-ventilated areas. There are no reviews in the saved listing to show how it behaved in a greenhouse.
Which regulator is in the box?
The bullets say a propane hose and regulator are included, and that the butane regulator is not included. The fuel field says propane.
Does it need a mains socket?
The bullets say a pre-fitted 13 A UK plug. The power-source field says propane and does not mention the plug. Both lines are on the listing.
Three amazon.co.uk listings are kept. The score on each row is the star ratio only: stars divided by 5, times 100. A 4.7 average becomes 94. Where the listing file has no star line, the score is 0. That 0 means the file is empty. It is not a measured failure. Review volume, a thermocouple, IPX4 and a battery fan are not added into the number. On a tie, the larger rating count wins, then the lower price. There is no laboratory test of a glasshouse. Weights sum to 100.
Amazon star ratio
60%The published score is the amazon.co.uk star average divided by 5, times 100. The Bimson 15 kW and the DAHTEC both become 94 from 4.7. The 30 kW file has no star line, so the score stays 0.
Review count on a tie
25%When two scores match, the larger amazon.co.uk rating count decides the top pick. Twenty-four ratings outrank four. The count is not added into the 94.
Shelf price on a tie
15%If the star ratio and the rating count still match, the lower shelf price wins. A lower price with no star line does not earn a best-value badge, and a higher price at the same stars does not either.
A gas greenhouse heater on a UK listing is not automatically a seedling heater. Purpose-built models are about 2 kW to 4 kW. The three rows here are 10 kW, 15 kW and 30 kW propane blowers that also name a greenhouse. Read the fan’s power source, the fuel and regulator, and the ventilation line before the kilowatt figure. A star average is not a flue test. A coverage line is not a measured glasshouse result. If the house must stay closed, leave this set.
A gas greenhouse heater burns bottled LPG and, unless it has a flue, leaves the combustion products in the same air as the plants. On amazon.co.uk the phrase covers two different tools. UK gardening shops describe purpose-built greenhouse heaters of about 2 kW to 4 kW, with a thermostat and an oxygen depletion device. Greenhouse Stores lists an Eden 2 kW at £140 and a Regal 4 kW at £279. Those are shop prices, not amazon.co.uk prices, and those heaters are not in this set.
These three listings name a greenhouse and also name a garage or a workshop. They are 10 kW, 15 kW and 30 kW blowers. A 6×8 ft glasshouse wants about 2–4 kW of purpose-built heat, and those heaters are not in this set.
UK propane is about 37 mbar and butane about 28–30 mbar. Do not fit one cylinder to the other regulator. Both Bimson bullets name butane as well as propane. The 30 kW box does not include a butane regulator.
Unflued combustion stays in the house. Reviews on the 15 kW say it is not for a sealed room. The DAHTEC listing says outdoors or a well-ventilated non-domestic area. Do not point the outlet at plants or fleece. An oxygen depletion device is not a carbon monoxide alarm.
Choose the job before the watts. A small glasshouse wants about 2–4 kW of purpose-built propane heat, with a thermostat and an oxygen depletion device. A ventilated barn wants a blower. Do not default to 15 kW or 30 kW for a 6×8 ft house. The Royal Horticultural Society treats electricity as the first choice when a professional can install a supply. Gas or paraffin is the fallback where there is no socket, because burning them releases water, ethylene and carbon monoxide.
Both Bimson models need a 13 A socket for the fan. The 15 kW power-source field says corded electric, and reviews say it will not run where there is no socket. The 30 kW bullets claim a pre-fitted 13 A plug, while the power-source field says propane and does not mention the plug. Only the DAHTEC 10 kW runs the fan from an included 18 V, 5.2 Ah battery. That battery is finite, a review describes a three-pin charger, and the heat still comes from a propane bottle. Named cut-outs differ.
Three typical situations, each with a recommendation from this comparison.
You already have a 13 A socket and you will keep a garage, workshop or barn open while the heater runs. The Bimson Power 15 kW is the top pick at about £119.99, with 4.7 from 24 ratings. Reviews say it is not for a sealed room.
The space is outdoors or a well-ventilated non-domestic area, and you cannot run a mains lead to the fan. The DAHTEC 10 kW runs the fan from an included 18 V battery. The sample is four ratings, and the charger still needs a socket somewhere.
You want the highest stated output, 12–30 kW, and you will accept a listing with no amazon.co.uk star line. The Bimson Power 30 kW is about £169.99. The bullets still claim a 13 A plug, and there is no review text to show how it behaved.
The top pick is the Bimson Power 15 kW at about £119.99. It shares a 4.7 star ratio with the DAHTEC 10 kW and has the larger file, 24 ratings against four, at the lower price. Reviews describe garages, a workshop and a barn, and they say the space has to stay open. The fan needs a 13 A plug. No best-value badge is placed: the other scored listing is £219.00, and the £169.99 listing has no star line. This is not a ranking of 2–4 kW greenhouse heaters, and those heaters are not in this set.
Bimson Power 15 kW
Same 4.7 star ratio as the DAHTEC, with 24 ratings at about £119.99, for a ventilated workspace that already has a socket.
Not awarded
No other listing has a lower price and a score of at least 50. The DAHTEC is £219.00, and the £169.99 row has no star line.
Editorial
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.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources named below. amazon.co.uk prices, stars and review counts on these three listings were taken from the listing files read on 20 October 2026. Page updated October 2026.
This page contains affiliate links to amazon.co.uk (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 taken from those listings. We did not run a lab test.
