Autoterm Air 2D Portable

Last updated: October 30, 2026

Autoterm Air 2D Portable
3.4/5#1 of 34 in all in one diesel heaters
3.4

For overlanders, ice fishers and boat owners who want a portable heater with a proven, type-approved core and will pay for it. Clone all-in-ones give similar heat for a fraction of the price.

  • 2 kWHeat output
  • 0.1 to 0.24 L/hFuel burn
  • 10 to 29 WPower draw
  • ECE R122Type approval
  • 2 yearsWarranty
Check price at Amazon$1,599.99

Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Type-approved Autoterm heater core, built far better than clone portables
  • No install: set it down, run the duct and exhaust, plug into 12V
  • Works at altitude up to about 13,800 ft
  • Draws only 10 to 29 W
Cons
  • About $1,600, many times the price of clone all-in-one heaters
  • Tank size is not published
  • Basic PU-5 dial has no timer or app
  • Heavy at about 25 lb

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberPlanar 2D-12-HA-Portable (Air 2D-12 in a portable case, PU-5)
Heating
Heat output (maker)2 kW
Lowest output0.8 kW
Fuel burn0.1 to 0.24 L/h
BuildAll in one
Power
Supply12V
Running draw10 to 29 W
Controls and safety
ThermostatYes
Automatic altitudeYes, to 13,780 ft
AppNo
TimerNo
RemoteNo
CO shutoffNo
Type approvalECE R122
Build
Dimensions24 x 16.5 x 19 in
Weight25.5 lb
Warranty2 years

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