Espar Airtronic S3 D2L
#2 in SplitFull review
For van, truck and boat owners who want a quiet, type-approved 2 kW heater that works at high altitude. It costs much more than clones but is built to run for thousands of hours.
Amazon $1,250$1,250
3.5/5
For van and truck owners who want a type-approved 2 kW heater with low power draw and a timer. The newer Airtronic S3 D2L now does the same job for less.
- 2.2 kWHeat output
- 0.1 to 0.28 L/hFuel burn
- 6 to 31 WPower draw
- ECE R122Type approval
Check price at Amazon$1,315
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Newer model: the Espar Airtronic S3 D2L replaces this one (rated 3.5, #2 split). See every Espar Airtronic 3 generation.
Pros
- Type approved to ECE R122 for vehicle installation
- Sips 6 W on low, so it runs all night on a small battery
- Adjusts itself for altitude up to about 9,800 ft
- 7-day timer and thermostat controller included
Cons
- Over $1,300 for 2.2 kW
- Replaced by the Airtronic S3 D2L, which is quieter and costs less on Amazon
- Needs a proper install with fuel standpipe and exhaust
The Espar Airtronic 2 family
Every Espar Airtronic 2 model we rank, smallest first. Ratings compare each against its own type.
| Model | Heat output | Rating | Price |
|---|---|---|---|
| Espar Airtronic S2 D2L (this one) | 2.2 kW | 3.5/5 | $1,315 |
| Espar Airtronic M2 D4L | 4 kW | 3.4/5 | $1,675 |
| Espar Airtronic M2 D4R | 4 kW | 3.2/5 | $1,849.99 |
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 number | Airtronic S2 D2L 12V (25.2721.05.0000) |
|---|---|
| Heating | |
| Heat output (maker) | 2.2 kW |
| Lowest output | 0.8 kW |
| Fuel burn | 0.1 to 0.28 L/h |
| Build | Split (installed) |
| Power | |
| Supply | 12V |
| Running draw | 6 to 31 W |
| Starting draw | 100 W |
| Controls and safety | |
| Thermostat | Yes |
| Automatic altitude | Yes, to 9,840 ft |
| App | No |
| Timer | Yes |
| Remote | No |
| CO shutoff | No |
| Type approval | ECE R122 |
| Build | |
| Dimensions | 12.2 x 4.5 x 4.8 in |
| Weight | 6 lb |
| Released | 2018-07 |
Alternatives in this type
Autoterm Air 2D
#3 in SplitFull review
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.
Amazon $949.99$949.99
Espar Airtronic M3 D4L
#5 in SplitFull review
For larger vans, trucks and boats that need a type-approved 4 kW heater that works anywhere, including high mountain passes. It costs far more than clones but is built for years of daily use.
Amazon $1,675$1,675
Compare
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