Autoterm Air 2D

Last updated: October 30, 2026

Autoterm Air 2D
3.5/5#3 of 36 in split diesel heaters
3.5

For van and boat owners who want a type-approved 2 kW heater for less than Webasto or Espar. Add a timer panel if you want it warm before you wake.

  • 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$949.99

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

Pros
  • Type approved to ECE R122 at a much lower price than Webasto or Espar
  • Works at altitude up to about 13,800 ft
  • Simple PU-5 dial holds a set temperature
  • Two-year warranty, three with a certified install
Cons
  • Basic PU-5 dial has no timer or app
  • Still about $950, several times the price of clone 2 kW heaters
  • Needs a proper install with fuel standpipe and exhaust

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 numberAir 2D-12 (Planar 2D-12) with PU-5
Heating
Heat output (maker)2 kW
Lowest output0.8 kW
Fuel burn0.1 to 0.24 L/h
BuildSplit (installed)
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
Dimensions12.2 x 4.7 x 5.7 in
Weight6.4 lb
Warranty2 years

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