GEARLASSO DH002 Diesel Heater
#4 in All in oneFull review
A cheap all-in-one heater with app control and a two year warranty, for tents and small vans, with real output closer to 3.6 kW.
Amazon $121.99$121.99
The GEARLASSO DH002 Diesel Heater is the better diesel heater overall, rated 3.2 to 2.9. The GEARLASSO DH002 Diesel Heater leads on warranty. The Sunster TP B2 wins on controls and safety. The GEARLASSO DH002 Diesel Heater costs $46 less ($121.99 vs $167.99).
Sunster TP B2
#18 in All in oneFull review
A portable heater for tents, garages and vans with WiFi control, a thermostat and a CO shutoff at a mid price. Treat it as about a 4 kW heater, not 8 kW.
Amazon $167.99$167.99
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the GEARLASSO DH002 Diesel Heater for warranty (2-year warranty vs 1-year warranty).
- Choose the Sunster TP B2 for controls and safety (holds a set temperature, CO shutoff, automatic altitude, app, timer vs holds a set temperature, app; no CO sensor).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every all in one diesel heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | GEARLASSO DH002 Diesel Heater | Sunster TP B2 |
|---|---|---|
| Overall rating | 3.2/5 | 2.9/5 |
| Value 25% | 81 $34 per kW ($121.99, 3.6 kW); 8 kW claimed, more than its fuel burn can supply | 70 $45 per kW ($167.99, 3.7 kW); 8 kW claimed, more than its fuel burn can supply |
| Type approval 20% | 0 no type approval published | 0 no type approval published |
| Controls and safety 15% | 62 holds a set temperature, app; no CO sensor | 100 holds a set temperature, CO shutoff, automatic altitude, app, timer |
| Power draw 15% | 50 power draw not published (neutral score used) | 50 power draw not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 0 1-year warranty |
| Low setting 10% | 50 down to 1.4 kW | 0 down to 2.1 kW (from its lowest fuel burn) |
Specifications
| GEARLASSO DH002 Diesel Heater | Sunster TP B2 | |
|---|---|---|
| Heating | ||
| Heat output (maker) | 8 kW claimed (about 3.6 kW from its fuel burn) | 8 kW claimed (about 3.7 kW from its fuel burn) |
| Lowest output | 1.4 kW | - |
| Fuel burn | 0.15 to 0.45 L/h | 0.26 to 0.46 L/h |
| Fuel tank | 5 L | 5 L |
| Build | All in one | All in one |
| Power | ||
| Supply | 12V/24V/110V | 12V/24V/110V/240V |
| Controls and safety | ||
| Thermostat | Yes | Yes |
| Automatic altitude | - | Yes, to 18,050 ft |
| App | Bluetooth | Bluetooth/WiFi |
| Timer | - | Yes |
| Remote | Yes | Yes |
| CO shutoff | No | Yes |
| Type approval | None published | None published |
| Build | ||
| Noise | - | 35 dB |
| Weight | - | 19.9 lb |
| Warranty | 2 years | 1 year |
| Released | - | 2026-08 |