Home garage on a 13 A socket
You heat a small enclosed garage from a normal 13 A socket, and the circuit may already be busy. Stay at 2 kW. The DAHTEC BGP1506-02 states 8.33 A, a 1.60 m lead and ceramic heat for that size of room.
Construction heaters 2026: 8 electric fans compared
The best construction heaters, compared.
Top pick: TCP 2 kW ceramic heater Best value: DAHTEC BGP2305-20 2 kW yellow ceramic heater – £29.74 with 4.4 from 129 reviews; the face-down review and the missing lead length hold the score down. Updated 16.10.2026.
UK hire shops use the words construction heater for any temporary heater: an electric fan, an infrared unit, or a direct-fired or indirect-fired fuel heater. Judge them by whether a 13 A circuit can feed the stated output. At 230 V, 2 kW is about 8.7 A and 2.8 kW about 12.2 A. None of the eight states 110 V, so a yellow-socket site needs a different heater. Reviews cluster on hot plugs, short leads and early failure. The 13 A ceiling is set out in the [construction heater buying guide](/hub/portable-heaters/construction-heater/sub/construction-heater-buying-guide). They put no combustion fumes in the room, and they need a small enclosed space on 230 V. A 110 V site fan uses a yellow BS EN 60309 plug. Direct-fired diesel or puts combustion gases in the room, so keeps it to ventilated spaces. Indirect-fired diesel flues the exhaust outside; hires that class from 65 kW to 350 kW. Heating a whole site is a different job, which is why [temporary heat on a building site](/hub/portable-heaters/blog/temporary-heat-on-a-building-site) sits outside this ranking.
UK hire shops use the words construction heater for any temporary heater: an electric fan, an infrared unit, or a direct-fired or indirect-fired fuel heater.
28 products checked · 64 hrs invested · +22,100 readers
8 of 8: Best construction heaters compared
Swipe for more
1-2 of 8Best overall
Best value
6.0/10
5.3/10
8.4/10
5.9/10
8.6/10
7.6/10
6.5/10
5.7/10
∼ £34
∼ £67
∼ £30
∼ £50
∼ £47
∼ £50
∼ £67
∼ £67
5.0(2)
4.7(5)
4.4(129)
4.2(35)
4.1(87)
3.8(796)
3.7(12)
3.7(12)
Personal buying guide
Which construction heater fits?
Question 1 of 2
What supply can you use?
The best construction heaters in detail
Our view
The TCP heater is listed at £34.00 as a 2 kW, 240 V unit weighing 1.4 kg, with dimensions of 13 x 21 x 26 cm and a coverage line of 15–20 m². The title states two heat modes, overheat protection and tip-over protection, which is the only tip-over claim in this set. The star line is 5.0 from 2 reviews, and the only review text praises the instructions, the packaging and that the heater does what it says. Two reviews cannot show a fault pattern, or the lack of one. The bullets say a ceramic PTC element, the heating-element field says coil, and the item type says panel heater. Current and lead length are not stated. It is a thin record beside the feature line, useful only if you specifically need a stated tip-over switch and you can live with the clash.
Pros
- Tip-over and overheat protection both stated
- 240 V stated, at £34.00 and 1.4 kg
- Adjustable temperature and two heat modes
- The only review text praises the instructions and packaging
Cons
- 5.0 from 2 reviews, with one text on the listing
- Element field says coil while the bullets say PTC
- Current and lead length are not stated
- Item type says panel heater against a fan-style title
Best for: A small indoor room if you specifically want a stated tip-over switch and you accept that two reviews cannot show a pattern.
Less suitable: A buyer who wants a large UK review sample, a settled element type, or a 3 kW site fan.
Specifications
- Model
- TCP 2 kW ceramic heater
- Brand
- TCP
- Price
- ∼£34
- Customer rating
- 5.0/5(2)
- Heat output
- 2,000 W
- Voltage
- 240 V
- Settings
- 2 heat modes
- Element
- PTC / coil
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Weight
- 1.4 kg
Common questions
Does the listing state tip-over protection?
Yes. The title and special features both say tip-over protection, and a bullet says a solid base for tip-resistant use.
What element does it specify?
The bullets say a ceramic PTC element. The heating-element field says coil. The item-type name says panel heater.
What supply is stated?
240 V AC. Current and lead length are not stated. Coverage is given as 15–20 m².
Our view
The DAHTEC BGP3003-28 is a 2,800 W fan at £67.15, with settings of 35 W, 1,400 W and 2,800 W, a steel body of 24 x 22.6 x 29.4 cm and a weight of 4.16 kg. The listing current is 12.7 A, voltage is not stated, and an outlet adjustment of 0–25° is noted, along with a manual thermostat and an overheat cut-out. It shows 4.7 stars from 5 reviews. Of the three UK review texts, one describes quick heat for tinkering in a garage and doubts a double garage, one calls the heater very powerful, and one reports an electrical burning smell after a few months. No splash rating, tip-over switch, lead length or element type is stated. Five reviews and a burning-smell report are a weak reason to pay the joint-highest price in this set.
Pros
- 2,800 W with 35 W, 1,400 W and 2,800 W settings
- Thermostat, overheat cut-out and a 0–25° outlet
- 4.16 kg steel body, current stated at 12.7 A
- One review describes quick heat for garage tinkering
Cons
- 4.7 from only 5 reviews, with three texts on the listing
- One review reports an electrical burning smell after a few months
- Voltage, lead length, element and splash rating are not stated
- £67.15 beside a sample too small to show a pattern
Best for: A small indoor garage job only if you will unplug it at the first smell of burning and you already accept a 12.7 A draw.
Less suitable: A double garage, a wet site, or a buyer who wants more than five reviews before spending £67.15.
Specifications
- Model
- DAHTEC BGP3003-28 2.8 kW fan heater
- Brand
- DAHTEC
- Price
- ∼£67
- Customer rating
- 4.7/5(5)
- Heat output
- 2,800 W
- Current
- 12.7 A
- Settings
- 35 / 1,400 / 2,800 W
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Weight
- 4.16 kg
Common questions
What output does the listing state?
2,800 W, with settings of 35 W, 1,400 W and 2,800 W. The heat-output field is 62 °C, not a wattage.
Does the listing state overheat protection?
Yes. Special features and a bullet both include overheat protection, plus a manual thermostat.
Is a splash rating stated?
No. Indoor/outdoor is Indoor, and no IP code is stated.
Our view
The yellow DAHTEC BGP2305-20 is a 2 kW PTC fan in a 14.1 x 12.2 x 17.8 cm body that weighs 1.3 kg, listed at £29.74. Across 129 amazon.co.uk reviews it sits at 4.4 stars, and the reviews often praise strong heat from a very small metal shell in a camper, shed, kitchen or office. The stated draw is 8.33 A, bullets say 220–240 V, and airflow is given as 142 m³/h, with a 25 W fan step, a thermostat and an overheat cut-out. Reviewers also describe a noisy fan and a short throw of heat, and several report the heater stopping after four days, about a month or six weeks. The lead length is not stated. One UK review says it keeps running if it falls on its face, and the listing does not state a tip-over switch. It is the best value for a very small closed room, and it is the wrong size if you need a longer throw or a lead length you can read before you buy.
Pros
- £29.74 with 4.4 from 129 reviews
- Stated 8.33 A at 2 kW, inside a 13 A socket
- PTC ceramic, thermostat, overheat cut-out and a 25 W fan step
- 1.3 kg, easy to move between a shed and a small room
Cons
- 14 cm-class body; reviews say the heat does not throw far
- No tip-over switch stated; one review says it keeps running face-down
- Several reviews report failure within six weeks
- Lead length is not stated
Best for: A very small closed room, shed or home office on a normal 13 A socket, if you will not knock the heater over and you do not need a long throw of heat.
Less suitable: A double garage, a 110 V site, or anyone who wants a stated tip-over switch and a lead length on the listing.
Specifications
- Model
- DAHTEC BGP2305-20 2 kW yellow ceramic heater
- Brand
- DAHTEC
- Price
- ∼£30
- Customer rating
- 4.4/5(129)
- Heat output
- 2,000 W
- Current
- 8.33 A
- Voltage
- 220–240 V
- Settings
- 25 / 1,000 / 2,000 W
- Element
- PTC ceramic
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Fan-only
- 25 W
- Weight
- 1.3 kg
Common questions
How small is the stated body?
14.1 x 12.2 x 17.8 cm and 1.3 kg, in the bullets and the dimension fields. Reviews often say it is smaller than the photos suggest.
Does the listing state tip-over protection?
No. One UK review says it keeps running if it falls on its face.
What supply does it state?
The voltage field says 220 V AC and 8.33 A. A bullet says 220–240 V, 50 Hz. No lead length is stated.
Our view
The SISUPASSIE listing titles a 3,000 W ceramic fan at £49.99, with fan-only, 1,500 W and 3,000 W steps, a 1.3 m cord and a weight of 2.32 kg. It shows 4.2 stars from 35 reviews, and the Amazon reviews praise fast warm air for the size, a carry handle and a greenhouse cut-off. The specification fields do not state voltage, current, a splash rating or a room thermostat, while the indoor/outdoor field says indoor and outdoor. One UK review describes a 2,000 W heater with 1,000 W and 2,000 W settings, and another found it colder than an existing 2,000 W heater. Reviewers call it noisy against an under-40 dB bullet, and one review text is about a pendant light rather than this fan. A self-resetting thermal breaker is the overheat claim. The listing asks about unattended use and does not answer.
Pros
- 4.2 from 35 reviews, with fast-heat comments for the size
- Fan, 1,500 W and 3,000 W claimed, plus a carry handle
- Overheat protection stated as a self-resetting breaker
- £49.99 and a cord stated at 1.3 m
Cons
- No voltage, current or IP rating on the listing
- A review describes 2,000 W, not the titled 3,000 W
- Noisy against an under-40 dB bullet
- Outdoor and patio wording with no splash code
Best for: A small garage or greenhouse only if the unit you receive matches the 3,000 W title and you keep it out of rain.
Less suitable: A buyer who needs a stated voltage before paying, a patio in the wet, or anyone treating the 3,000 W line as settled.
Specifications
- Model
- SISUPASSIE 3 kW ceramic fan heater
- Brand
- SISUPASSIE
- Price
- ∼£50
- Customer rating
- 4.2/5(35)
- Heat output
- 3,000 W claimed
- Settings
- Fan / 1,500 / 3,000 W
- Element
- PTC ceramic
- Overheat cut-out
- Yes
- Fan-only
- Fan only
- Cable
- 1.3 m
- Weight
- 2.32 kg
Common questions
What output does the listing state?
The title and bullets say 3,000 W, with fan only, 1,500 W and 3,000 W. The heat-output field says 3000 with no unit. One UK review describes a 2,000 W heater.
Is a thermostat stated?
Not in the specification fields. A bullet describes a self-resetting thermal breaker. A review says it switches off at a temperature in a greenhouse.
Can the listing support outdoor use?
The indoor/outdoor field says indoor and outdoor, and bullets mention a patio. No IP rating and no voltage are stated.
Our view
The DAHTEC BGP1506-02 puts 2 kW of ceramic heat into a small closed room at a stated 8.33 A, which leaves more spare on a 13 A socket than the 2.8 kW and 3 kW rows. It weighs 1.55 kg, measures 21 x 16 x 21.7 cm, and the listing states a 1.60 m lead with settings of 25 W, 1,000 W and 2,000 W. Across 87 amazon.co.uk reviews it sits at 4.1 stars, and the first 50 texts include a garage, a workshop, a greenhouse, an aviary and a shipping container. Bullets claim noticeable warmth in about 3 seconds, with a manual thermostat and an overheat cut-out. Buyers still call the cable short and the body smaller than the photos, and some report a unit dead on arrival or failed within a week. No splash rating and no tip-over switch are stated, and one greenhouse user disliked the fan running only while the element heated. It is the top pick for a small workshop or garage when you want that stated lead, though the yellow 2 kW listing costs less and has more reviews.
Pros
- 2 kW ceramic at a stated 8.33 A, with a 25 W fan step
- 4.1 from 87 reviews, including garage, workshop and container use
- Lead stated at 1.60 m
- Thermostat and overheat cut-out stated
Cons
- £46.75, dearer than the yellow 2 kW at £29.74
- Reviews of a short cable and a body smaller than the photos
- Some units failed within a week
- No splash rating and no tip-over switch stated
Best for: A small enclosed garage, workshop or greenhouse on a 13 A socket, when you want a stated lead and can live with a compact ceramic fan.
Less suitable: A draughty double garage, outdoor rain, or a buyer whose only aim is the lowest price in this set.
Specifications
- Model
- DAHTEC BGP1506-02 2 kW ceramic fan heater
- Brand
- DAHTEC
- Price
- ∼£47
- Customer rating
- 4.1/5(87)
- Heat output
- 2,000 W
- Current
- 8.33 A
- Voltage
- 220 V
- Settings
- 25 / 1,000 / 2,000 W
- Element
- Ceramic
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Fan-only
- 25 W
- Cable
- 1.60 m
- Weight
- 1.55 kg
Common questions
What are the three settings?
25 W fan only, 1,000 W and 2,000 W, plus a manual thermostat. The element field says ceramic.
How long is the lead?
1.60 m, in a bullet. One review describes it as about a couple of feet.
Is it only a site heater?
The highlight line says industrial blower for home, garage and greenhouse. Room types also include bathroom, motorhome, tent and workshop. Indoor/outdoor says Indoor.
Our view
The Benross 42450 is a yellow 3 kW industrial fan at £49.99, with 1,500 W and 3,000 W heat plus a 40 W fan mode, a tilt and a stated current of 13.64 A. Across 796 amazon.co.uk reviews it sits at 3.8 stars, and several of the first 50 say a small closed garage warms if you run the heater before you work. One of those reviews timed a small insulated workshop of about 770 cubic feet from 6°C to 15°C in 25 minutes, while another could not heat a wooden garage. The same sample describes hot plugs, hot sockets and hot extensions, which on a wall socket is a fault. The title says IPX4 waterproof, the indoor field says Indoor, and IPX4 is a splash code rather than a hose. Bullets claim a dual overheat cut-out; reviewers still mention a loud fan, a short lead, missing knobs or a unit that failed within weeks. The dimension field reads 10.6 x 9.4 x 12.2 cm beside 3.6 kg, so treat that line as the listing’s figure.
Pros
- 3.8 from 796 reviews, the largest sample in the set
- 1,500 W, 3,000 W and a 40 W fan, plus a tilt
- IPX4 stated, with a thermostat and a claimed dual overheat cut-out
- £49.99 and a one-year defect warranty
Cons
- Listing current is 13.64 A, above a 13 A fuse
- Hot plug and hot socket reviews
- Title says waterproof; the code is splash only and the field says Indoor
- Dimension field of 10.6 x 9.4 x 12.2 cm sits oddly beside 3.6 kg
Best for: A small closed garage on a dedicated, sound 230 V socket, if you will stop at once when the plug or socket warms.
Less suitable: A shared 13 A circuit, an extension reel, rain, or anyone who reads waterproof as hose-proof.
Specifications
- Model
- Benross 42450 3 kW industrial fan heater
- Brand
- Benross
- Price
- ∼£50
- Customer rating
- 3.8/5(796)
- Heat output
- 3,000 W
- Current
- 13.64 A
- Voltage
- 220 V
- Settings
- 1,500 / 3,000 W
- Element
- Stainless steel
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Fan-only
- 40 W
- Splash rating
- IPX4
- Weight
- 3.6 kg
Common questions
What current does the Benross listing state?
13.64 A at 220 V. That figure is above 13 A. Reviews describe hot plugs and hot sockets.
What does the listing say IPX4 covers?
The title says IPX4 waterproof and a bullet says IPX4 waterproof certified. Indoor/outdoor says Indoor. No test method is quoted on the listing.
Is assembly required?
A bullet says only the support bracket. Included components are fan and cable. Some reviews say the instructions do not show the build, or that knobs were missing.
Our view
The black DAHTEC BGP3007-28 is a 2.8 kW coil fan at £67.15, in a steel body of 19.8 x 23 x 31 cm that weighs 4.1 kg, with airflow stated at 495 m³/h. Settings are a 30 W fan, 1,860 W and 2,800 W, the listing current is 12.73 A at 220 V, and the bullets give a 1.60 m lead plus IP24. It shows 3.7 stars from 12 reviews, and the four UK review texts are the same as the silver listing, so this is one sample. One text says it dried plaster and then warmed a double garage, another calls it noisy, a third says the circuit started tripping and that the output did not feel like 2.8 kW, and a fourth found little heat from about two feet away in a cold room. The coil bullet says this type takes about 5–10 minutes to feel comparable with ceramic. IP24 is splash protection, the indoor field says Indoor, and no tip-over switch is stated.
Pros
- IP24 stated, with a thermostat and an overheat cut-out
- 30 W fan, 1,860 W and 2,800 W, airflow stated at 495 m³/h
- Steel body, 4.1 kg, lead stated at 1.60 m
- One review describes plaster drying, then a double garage
Cons
- 3.7 from 12 reviews, and the four texts match the silver listing
- A review says the circuit trips and disputes the 2.8 kW output
- Coil warm-up stated at about 5–10 minutes
- 12.73 A is tight on a 13 A socket, and no tip-over switch is stated
Best for: A small enclosed site room or garage where you want a steel 2.8 kW fan and you can give it a socket of its own.
Less suitable: A busy 13 A circuit, a buyer counting the silver listing as extra reviews, or a room that needs heat in the first minute.
Specifications
- Model
- DAHTEC BGP3007-28 2.8 kW fan heater, black
- Brand
- DAHTEC
- Price
- ∼£67
- Customer rating
- 3.7/5(12)
- Heat output
- 2,800 W
- Current
- 12.73 A
- Voltage
- 220 V
- Settings
- 30 / 1,860 / 2,800 W
- Element
- Coil
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Fan-only
- 30 W
- Splash rating
- IP24
- Cable
- 1.60 m
- Weight
- 4.1 kg
Common questions
What IP rating does the listing state?
IP24, in a bullet. The indoor/outdoor field still says Indoor.
How is the 2,800 W split?
30 W fan only, 1,860 W and 2,800 W. The element field says coil, and a bullet says this type takes about 5–10 minutes versus ceramic.
What current does the listing state?
12.73 A at 220 V AC. The cable is stated as 1.60 m.
Our view
The silver DAHTEC BGP3007-28 carries the same model number, £67.15 price and stated specification as the black listing: 2.8 kW, a 30 W fan step, 1,860 W and 2,800 W, IP24, 12.73 A and a 1.60 m lead. The colour field says Silver. The four review texts match the black ASIN, so the 3.7 from 12 is not a second group of silver-only buyers. Those texts include a portable build, a plaster-then-garage story, noise, a tripping circuit and weak heat in a cold room. Airflow is stated at 495 m³/h, the body at 19.8 x 23 x 31 cm and 4.1 kg, with a manual thermostat and an overheat cut-out. The coil note of about 5–10 minutes is unchanged, and nothing in the silver listing adds a tip-over switch. Buy it for the finish only after you have already accepted the black listing’s limits.
Pros
- Same stated spec as the black BGP3007-28, in silver
- IP24, thermostat, overheat cut-out and a 30 W fan step
- 1.60 m lead and 495 m³/h stated
- Steel body at 4.1 kg
Cons
- Review texts are duplicated from the black ASIN
- 3.7 from 12, including a trip and disputed output
- £67.15 for a shared evidence set
- No tip-over switch stated
Best for: A buyer who wants this silver finish and has already read the black listing’s four review texts.
Less suitable: Anyone treating the two colour listings as 24 independent reviews, or a draughty bay on a tight 12.73 A draw.
Specifications
- Model
- DAHTEC BGP3007-28 2.8 kW fan heater, silver
- Brand
- DAHTEC
- Price
- ∼£67
- Customer rating
- 3.7/5(12)
- Heat output
- 2,800 W
- Current
- 12.73 A
- Voltage
- 220 V
- Settings
- 30 / 1,860 / 2,800 W
- Element
- Coil
- Thermostat
- Yes
- Overheat cut-out
- Yes
- Fan-only
- 30 W
- Splash rating
- IP24
- Cable
- 1.60 m
- Weight
- 4.1 kg
Common questions
How does this differ from the black BGP3007-28?
The colour field says Silver. Model, price, output, IP24 and the four review texts match the black listing.
What IP rating is stated?
IP24, in a bullet. Indoor/outdoor says Indoor.
What do the shared reviews complain about?
Noise, a circuit that trips, output that did not feel like 2.8 kW, and weak heat in a cold room.
How we compared
We scored eight amazon.co.uk electric fan heaters listed for garages and small site rooms. Shelf prices and star lines are the figures captured on 15 October 2026. The total is not a lab test and not a best-sellers rank. It adds the star line, review volume, the stated socket and controls, a reading of the UK reviews, and a price band.
1
Star rating
25%Up to 25 points from the amazon.co.uk star line: the rating divided by 5, multiplied by 25, rounded half up. A high star line on two reviews is not the same evidence as a lower line on hundreds.
2
Review volume
20%Up to 20 points from the review count. The silver BGP3007-28 shares the black listing’s four review texts, so that volume is capped and is not counted as a second sample.
3
Socket and controls
25%Up to 25 points for a stated current, a 220–240 V line, a thermostat, an overheat cut-out, tip-over protection, a fan-only step with a wattage, a splash code, a consistent element description and a stated lead length.
4
Review sentiment
15%Up to 15 points from the UK review signals: fast heat in a small room, noise, short leads, early failures, hot plugs, and a heater that keeps running if it falls.
5
Price
15%Up to 15 points from the first matching amazon.co.uk price band on 15 October 2026, so a low shelf price only scores fully when the review sample is large enough.
Independent review
Last updated: 16.10.2026
8 sources checked
Construction heater buying guide
A construction heater on a hire list can be electric, infrared or fuel-fired. This page ranks only portable electric fans. The decision is the socket, the size of the closed room, and whether the reviews show a hot plug or an early failure. Stars are not a safety test. None of these eight runs on 110 V, and none is a dryer for an open shell.
What is a construction heater?
UK hire shops use “construction heater” for any temporary heater: an electric fan, an infrared unit, or a direct-fired or indirect-fired fuel heater. The eight amazon.co.uk listings kept here are only portable electric fans of 2 kW or 2.8–3 kW, from £29.74 to £67.15 on 15 October 2026, sold for garages and small site rooms. They put no combustion fumes in the room, and they need a small enclosed space on 230 V. A 110 V site fan uses a yellow BS EN 60309 plug.
Best for
- A home garage on a normal 13 A socket, staying at 2 kW if the circuit is already busy
- A small workshop that can dedicate a sound 230 V socket
Not ideal for
- A site that only has 110 V
- Heating a whole building shell
Mistakes to avoid
- 1
Using a small ceramic as a building dryer
These fans are for a small enclosed room. Coverage lines mix square metres and square feet and are seller claims, not a heat-loss calculation. An open shell needs a hired drying setup.
- 2
Reading IPX4 as rain-proof
IPX4 is splash only, not a hose. IP24 adds protection against solids over 12.5 mm. “Waterproof” on the Benross title overclaims the code, and the SISUPASSIE states outdoor use with no IP number.
- 3
Putting 3 kW on an extension reel
A 13 A socket tops out near 3,000 W. The Benross listing states 13.64 A, and reviews describe hot plugs and hot sockets. One high-power appliance per socket, no reel, and switch off when you leave.
What to weigh up
Supply and the 13 A ceiling
HighA 13 A socket tops out near 3,000 W. At 230 V, 2 kW is about 8.7 A and 2.8 kW about 12.2 A. The two DAHTEC 2 kW models state 8.33 A, which leaves spare on a domestic socket. The black and silver BGP3007-28 state 12.73 A, tight on a 13 A fuse, and one shared review says the circuit started tripping. The Benross 42450 states 13.64 A, above a 13 A fuse, and reviews in that sample of 796 describe hot plugs, hot sockets and hot extensions. A hot plug is a fault.
Element, controls and the room
HighCeramic listings claim heat in seconds. The BGP1506-02 bullets claim noticeable warmth in about 3 seconds. The 2.8 kW coil listing, the BGP3007-28, says this type takes about 5–10 minutes. The TCP bullets say PTC while the element field says coil, so that line is not settled. Prefer a thermostat and an overheat cut-out. Only the TCP states tip-over protection. The yellow BGP2305-20 does not, and one UK review says it keeps running if it falls on its face.
Which option suits you?
Three typical situations, each with a recommendation from this comparison.
Small workshop with its own socket
You can give a small closed workshop a sound 230 V socket of its own. The Benross 42450 is the 3 kW listing with 3.8 from 796 reviews. Read the hot-plug reviews first: the listing current is 13.64 A.
Very small room, lowest price
You want the lowest price in this set for a very small closed room, shed or home office, and you will not knock the heater over. The yellow DAHTEC BGP2305-20 is £29.74, with 4.4 from 129 reviews and a stated 8.33 A draw.
Common questions about construction heaters
Which construction heater is the top pick in 2026?
The DAHTEC BGP1506-02 is the top pick. It is a 2 kW ceramic fan at £46.75, with a stated 8.33 A draw, a 1.60 m lead, and 4.1 stars from 87 amazon.co.uk reviews. The score is an editorial total, not a lab test. It suits a small enclosed garage or workshop on a 13 A socket. It is a poor fit for a draughty double garage, or if you only want the lowest price.
How much does a construction heater cost?
On 15 October 2026 the eight amazon.co.uk listings ran from £29.74 to £67.15. Under £40: the yellow DAHTEC BGP2305-20 and the TCP at £34.00. About £45 to £75: the BGP1506-02 at £46.75, plus Benross and SISUPASSIE at £49.99. The 2.8 kW DAHTEC fans sit at £67.15. At the Ofgem average of 26.32p per kWh, 2 kW is about 53p an hour and 3 kW about 79p, before the thermostat cycles.
What should I check before I buy a construction heater?
Check the stated current against a 13 A socket. At 230 V, 2 kW is about 8.7 A and 2.8 kW about 12.2 A. A hot plug is a fault, and an extension reel is not a fix. Match the heater to a small closed room. Prefer a thermostat and an overheat cut-out. Read an IP code as splash protection, not a hose. Treat stars as a sample: 4.4 from 129 reviews tells you more than 5.0 from 2.
Will a 2–3 kW fan heat a double garage?
A coverage line, or a 3 kW title, is not proof that a double garage will warm up. Benross reviewers sometimes warm a small closed garage and often cannot lift a draughty one. One shared BGP3007-28 review describes a double garage; another found little heat from about two feet away. Coverage figures mix square metres and square feet and are seller claims. An open building needs a hired drying setup.
Can I use one of these on a 110 V site?
No. None of the eight states 110 V. A site fan on a yellow BS EN 60309 plug is a different product: hire ranges put about 1.5 kW on 16 A and about 3 kW on 32 A. A 110 V site, or a whole shell, is the wrong job for this set. For a larger electric unit, see the industrial space heater comparison. Use a competent person for 110 V.
Does IPX4 mean the heater is waterproof?
No. IPX4 is splash only, not a hose, and IP24 is solids over 12.5 mm plus splash. The Benross title says IPX4 waterproof, which overclaims the code, and the indoor field says Indoor. The BGP3007-28 states IP24 and still says Indoor. The SISUPASSIE mentions a patio and states no IP number. A splash code is not a reason to leave these heaters out in rain.
Electric fan or a fuel-fired site heater?
These eight are electric fans for a small enclosed room on 230 V, with no combustion fumes. Direct-fired diesel or LPG puts gases in the room, so Travis Perkins keeps that class to ventilated spaces. Indirect-fired diesel flues the exhaust outside; Aggreko hires that class from 65 kW to 350 kW. Site guidance prefers electrical heat over LPG because of carbon monoxide. Gas Safe applies where gas work is in a home or covered premises.
Our verdict
These eight construction heaters are electric fans for a small enclosed room, not dryers for an open building and not 110 V site machines. The top pick is the DAHTEC BGP1506-02: the highest score, a stated 8.33 A draw, a 1.60 m lead and 4.1 from 87 reviews. The best value is the yellow DAHTEC BGP2305-20 at £29.74, with 4.4 from 129 reviews, held back because one review says it keeps running face-down and the lead length is not stated. If the plug or socket runs hot, stop and call an electrician.
Best value
View offer
DAHTEC BGP2305-20 2 kW yellow ceramic heater
£29.74 with 4.4 from 129 reviews; the face-down review and the missing lead length hold the score down.
Editorial
Editor
amazon.co.uk listingsPublic UK sourcesPortable heaters
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: 16.10.2026
8 sources checked
Guides to construction heaters
Guides on what to look for, how to use a product, and common mistakes.
Construction heater buying guideHow the 13 A ceiling, output, element and IP rating decide a small electric fan.Best construction heaterWhich listing fits a person, and who should buy none of these eight.How to use a construction heaterWhere to place a fan you already own, how to start it, and when to switch it off.Construction heater for a garageWhether 2–3 kW can make a UK garage workable, including reviews that stayed cold.Electric or fuel construction heaterElectric fans against direct-fired and indirect-fired heat, and when the job goes to hire.
Related comparisons
Sources
Public UK sources last checked on 15 October 2026. Prices and star ratings are from the amazon.co.uk listings captured the same day.
- Ofgem: Changes to the energy price cap between 1 October and 31 December 2026 (retrieved 15.10.2026)
- The Workplace (Health, Safety and Welfare) Regulations 1992, regulation 7 (retrieved 15.10.2026)
- HSE: Temperature in the workplace, the law (retrieved 15.10.2026)
- HSE CIS59: welfare heat on construction sites (retrieved 15.10.2026)
- HSE: Carbon monoxide in construction (retrieved 15.10.2026)
- GOV.UK: Electrical Equipment (Safety) Regulations 2016 (retrieved 15.10.2026)
- Electrical Equipment (Safety) Regulations 2016, regulation 35 (retrieved 15.10.2026)
- Travis Perkins: How to use construction site heaters (retrieved 15.10.2026)
This page contains affiliate links. If you buy through them we may earn a small commission, at no extra cost to you. The scores are an editorial reading of amazon.co.uk listings and public UK sources. We do not run a lab.