Espar Airtronic S3 D2L
#1 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
The Espar Airtronic S3 D2L is the better diesel heater overall, rated 3.5 to 3.0. The Espar Airtronic S3 D2L leads on type approval, warranty and power draw. The VEVOR XMZ-D2 2kW LCD Diesel Heater wins on value. The VEVOR XMZ-D2 2kW LCD Diesel Heater costs $1,155.10 less ($94.90 vs $1,250).
Prices were last checked November 3, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
VEVOR XMZ-D2 2kW LCD Diesel Heater
#16 in SplitFull review
A small, cheap split heater for cars, truck cabs and boat cabins, with a credible 2 kW rating and a 12V or 24V supply.
Amazon $94.90$94.90
Which should you buy?
- Choose the Espar Airtronic S3 D2L for type approval (type approved (ECE R122) vs no type approval published), warranty (2-year warranty vs 1-year warranty) and power draw (up to 27 W running vs up to 40 W running).
- Choose the VEVOR XMZ-D2 2kW LCD Diesel Heater for value ($47 per kW ($94.90, 2 kW) vs $568 per kW ($1,250, 2.2 kW)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every split diesel heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Espar Airtronic S3 D2L | VEVOR XMZ-D2 2kW LCD Diesel Heater |
|---|---|---|
| Overall rating | 3.5/5 | 3.0/5 |
| Value 25% | 2 $568 per kW ($1,250, 2.2 kW) | 80 $47 per kW ($94.90, 2 kW) |
| Type approval 20% | 100 type approved (ECE R122) | 0 no type approval published |
| Controls and safety 15% | 65 holds a set temperature, automatic altitude; no CO sensor | 45 holds a set temperature, timer; no CO sensor |
| Power draw 15% | 73 up to 27 W running | 44 up to 40 W running |
| Warranty 15% | 50 2-year warranty | 0 1-year warranty |
| Low setting 10% | 96 down to 0.8 kW | 83 down to 1 kW (from its lowest fuel burn) |
Specifications
| Espar Airtronic S3 D2L | VEVOR XMZ-D2 2kW LCD Diesel Heater | |
|---|---|---|
| Heating | ||
| Heat output (maker) | 2.2 kW | 2 kW |
| Lowest output | 0.8 kW | - |
| Fuel burn | 0.1 to 0.27 L/h | 0.12 to 0.26 L/h |
| Fuel tank | - | 10 L |
| Build | Split (installed) | Split (installed) |
| Power | ||
| Supply | 12V | 12V/24V |
| Running draw | 6 to 27 W | 40 W |
| Starting draw | 90 W | - |
| Controls and safety | ||
| Thermostat | Yes | Yes |
| Automatic altitude | Yes, to 13,120 ft | No |
| App | - | No |
| Timer | - | Yes |
| Remote | - | Yes |
| CO shutoff | No | No |
| Type approval | ECE R122 | None published |
| Build | ||
| Dimensions | 12.2 x 4.5 x 4.8 in | 13.4 x 4.5 x 5.5 in |
| Weight | 5.5 lb | 11 lb |
| Warranty | 2 years | 1 year |
| Released | 2021 | - |