SKU: 10591464221

Autoterm 4D Diesel Air Heater 4kW 12V with Digital Controller

Sale price$854.53 Regular price$949.48
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Description

Autoterm 4D Diesel Air Heater 4kW 12V with Digital ControllerThe Autoterm 4D Diesel Heater Turns a Freezing Cab Into Somewhere You Actually Want to Sleep 4kW Diesel Heat Heats up to 120m h 12V Fires down to 45C 3 Year Warranty It's 3am and you can see your breath. The engine's off, the little fan heater's flattened your battery, and you're lying there in every layer you packed, still cold. Idling the diesel just to take the edge off feels like a mug's game, and that cheap no name heater you tried last winter

The Autoterm 4D Diesel Heater Turns a Freezing Cab Into Somewhere You Actually Want to Sleep

4kW Diesel Heat  |  Heats up to 120m³/h  |  12V  |  Fires down to -45°C  |  3-Year Warranty

It's 3am and you can see your breath. The engine's off, the little fan heater's flattened your battery, and you're lying there in every layer you packed, still cold. Idling the diesel just to take the edge off feels like a mug's game, and that cheap no-name heater you tried last winter spat fault codes and carked it.

The Autoterm 4D sorts that for good. A genuine 4kW of dry diesel heat, sipping as little as 0.21 litres an hour, running straight off your tank and a 12V feed. Set your temperature, roll over, and wake up to a warm cab instead of a cold one.

Why Tradies & Campers Rate the Autoterm 4D Diesel Air Heater

Genuine 4kW, not eBay watts

Every unit is bench-tested cold, then run for 30 minutes to check airflow temperature, emissions and CO² before it leaves the factory. It moves up to 120m³ of warm air an hour, plenty for a big motorhome, a dual-cab cabin, a shed or a boat up to 15 metres.

Sips fuel, spares your battery

On low it draws around 10W and burns roughly 0.21 L/h. It'll run all night off your existing diesel tank without flattening the cranking battery or emptying a gas bottle.

Starts when it's brutal

Reliable firing down to -45°C, with a brushless induction motor built for the long haul. That's the bit where the cheap units quietly give up.

Run it your way

Comes with the digital controller out of the box. Add the optional modem and you can fire it up from your phone by app or SMS before you've even walked back to camp.

The whole install kit's in the box

Full one-outlet kit: fuel pump, ducting, muffler, exhaust, 10m fuel hose, brackets, clamps and the lot. No chasing extra bits to get it mounted.

Autoterm 4D Specs

Model Autoterm 4D (44D)
Heat Output 1.0 - 4.0 kW
Heated Air Volume Up to 120 m³/h
Fuel Diesel
Fuel Consumption 0.21 - 0.51 L/h
Power Draw 10 - 62 W
Voltage 12V DC
Min Operating Temp Down to -45°C
Controller Digital Controller (included)
Motor Brushless induction
Weight 5.5 kg heater / 11.4 kg full kit
Best Suited To Large cabins, motorhomes, sheds, boats up to 15 m
Warranty 3 Years

What's Included

Everything you need is in the box with your Autoterm 4D Diesel Air Heater from True Gear

  • Autoterm 4D heater unit
  • Digital controller + 1.8m cable
  • Metering fuel pump + 6m cable
  • Power cable with fuses (6.5m)
  • Muffler with mounting kit
  • Exhaust pipe (1m) + heat insulation
  • Fuel hose (10m) + standpipe
  • Air intake hose + silencer
  • Mounting base plate & brackets
  • Clamps, rings & screws
  • Air intake grille & heater vent
  • Hot air ducting (1.2m)

Not Sure Which Diesel Air Heater Suits You?

Rough rule: the 4D is the one for bigger spaces, large motorhomes, dual-cab cabins, sheds, converted containers and boats up to 15 metres. If you're only heating a small camper, troopy or tinnie, the smaller Autoterm 2D will do the job on less fuel. Not sure? Give us a bell and we'll point you to the right one for your setup.

Call Us - 03 7056 6732Email Us

Autoterm 4D Manual

Download the complete Autoterm 4D Diesel Air Heater user manual and installation instructions below for full technical details and setup.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 10591464221

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4.7 ★★★★★
Based on 28 reviews
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Product Reviews
E
Verified Purchase
Emily Brown
San Leandro, US
★★★★★ 5
Great product! Worth the purchase
Color: White, Size: 2.5', Style: 2.5 ft
I just wanted a surge protected that's cheap and protects from lightning. I got this product since it was the highest rating for the price. I love this product, and it works great. I have all 6 used and it wasn't that hard to plug in the outlets as some say. It is a little harder than usually, but they don't fall out anymore! I haven't had lightning hit yet so I don't know how well it is against it, but it does come with a lifetime warranty! I just had a bad storm and it worked great, but no lightning struck the power line. I love the product for the price just don't like that it doesn't have the protected light on it (to let you know if you are still protected from lightning). Great product! Also this is a little bigger than a normal 6 outlet, but at least this one includes a surge protection!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 3, 2011
R
Verified Purchase
Ryan Seybuck
Draper, US
★★★★★ 5
Good
Color: White, Size: 10 ft (Pack of 1), Style: 10 ft
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
J
Verified Purchase
John Williamson
Lexington, US
★★★★★ 4
Better than the basic power strip
Color: White, Size: 2.5', Style: 2.5 ft
I needed to get a basic five or six outlet power strip and instead ended up with this . Since the power strip that I was going to get was for basic protection, and would be plugged into a surge suppressor anyway, I really wasn't concerned about how much protection it offered. Just having the extra outlets for additional small-to-medium electrical devices was important. While looking and comparing this with basic power strips, I decided to check the manufacturer's site to see what specs they offered, since the ones here seemed to be a bit inadequate. Here's what I found: * 555 Joule energy rating provides maximum protection of all your sensitive electronic devices * 6 Surge-protected outlets supply 2-line AC protection * 2.5-foot power cord delivers optimal, safe AC power through a 14-gauge heavy-duty cord * Filters EMI/RFI noise up to 43 dB reduction * Maximum Spike Amperage of 36,000 Amps * Lifetime Product Warranty * $15,000 Connected Equipment Warranty The pros on this unit include the price, the basic surge protection, a short but sturdy power cord, and good basic construction. It has a power/reset switch that's recessed at the top of the unit near the power cord to prevent accidental shutting down. On the negative side, like so many of these units, the outlets are too close together to put more than a couple transformer-type devices like cell phone chargers and such. Just a couple of comments on the specifications listed above to those who may be interested: if you're going to plug high-end expensive electronics into one of these, don't do it. This is an adequate but very basic unit, and you want to consider getting a better grade surge suppressor for large screen televisions, good computer systems and such. No surge protector is 100% effective, but sure that the product is listed as a transient voltage surge suppressor, and that it meets the criteria for UL 1449, the absolute minimum performance standard for surge suppressors. I'm no electrical engineer or electronics technician, but if you're going to protect an expensive jogging machine, your new 52-inch television or Apple iMac 27-inch desktop system, you need better than an under $10 surge suppressor or power strip. A friend who I will refer to as the 'cranky electronic tech' told me to look it up on the 'Net, but make sure that whatever I got for protection of "really good stuff" needed to be minimally have a UL1449 3rd Edition certification and be rated at 1400 joules of surge protection or higher, and the rest would fall into place. The that I've used for years with my large electronics is rated at 3330 Joules, and meets those specs. If you plan to use a basic surge suppressor to charge cell phones and the like with their transformer plugs, units with right-angle outlets are a better, though more costly choice. My personal choice for mid-range protection combined with outstanding quality is the , a 5-star product that I own and have reviewed here. I run two notebook computers with this, along with a few chargers. There are others if you look. If all that you're looking for is a basic surge protector with a reasonable amount of surge suppression, then this one from Belkin is a decent choice, and certainly better than the basic power strip. I actually came back recently and bought a second one this year. But if your needs call for more, then the above listed alternates may be worth a look. 4/25/2012
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Reviewed in the United States on April 26, 2012
M
Verified Purchase
Michael Bidwell
Natrona Heights, US
★★★★★ 5
It just works, and that is all that matters
Color: White, Size: 10 ft (Pack of 1), Style: 10 ft
It's a Belkin product. Do you really need to know anything more? My roommate bought a really crappy multi-outlet, it worked for the low wattage stuff, but for the higher wattage stuff the internal breaker kept popping. I bought this one, and it hasn't failed me yet.
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Reviewed in the United States on February 4, 2026
C
Verified Purchase
cruzer
Whiting, US
★★★★★ 5
price, features, 5 star
Color: White, Size: 4 ft (Pack of 1), Style: 4 ft
i cant comment on its performance as a surge protector but as a power strip its awesome. its redic cheap plenty of plug ins super thin, my other strip is twice as thick the on off switch is hidden which is great to not accidentally hit it, and with having kids around the cord length is perfect for my needs. its plug in behind a chair and a half and comes around the side and has plenty of play to move and plug and unplug the only con i can say about it which is not really a con because it wasnt designed for it. your only going to fit 1 big adapter on the end, or your going to have to give up plug ins to have more than that. but that clearly isnt the design of this strip. its about being thin, compact, hidden, and cheap. you want one that can do everything, your going to have to spend more
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2013

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