Hcalory HBU1S 5kW Diesel Heater
#33 in SplitFull review
A cheap app-controlled split heater for DIY van and RV installs, though Hcalory publishes few specs for this 5 kW version.
Amazon $99.99$99.99
3.4/5
For van, truck and boat owners who want a type-approved, proven 2 kW heater with low power draw. Production has ended, so check that the seller still offers support.
- 2 kWHeat output
- 0.12 to 0.24 L/hFuel burn
- 14 to 29 WPower draw
- ECE R122Type approval
- 2 yearsWarranty
Check price at Amazon$1,295
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Newer model: the Webasto Air Top Pro 25 replaces this one (rated 3.3, #7 split). See every Webasto Air Top generation.
Discontinued: no longer sold new; the links below may show remaining or used stock.
Pros
- Type approved to ECE R122, so it can be installed and run while driving in most countries
- Draws under 30 W, easy on a house battery overnight
- Holds a set cabin temperature and can start on a timer
- Small enough to fit under a seat or bunk
Cons
- Webasto has ended production in favor of the Air Top Pro 25
- Costs over $1,000 more than clone heaters of the same size
- No altitude sensor: the standard kit is rated to about 4,900 ft
- 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 number | Air Top 2000 STC diesel (kit with SmarTemp 2.0) |
|---|---|
| Heating | |
| Heat output (maker) | 2 kW |
| Lowest output | 0.9 kW |
| Fuel burn | 0.12 to 0.24 L/h |
| Build | Split (installed) |
| Power | |
| Supply | 12V |
| Running draw | 14 to 29 W |
| Controls and safety | |
| Thermostat | Yes |
| Automatic altitude | No |
| App | No |
| Timer | Yes |
| Remote | No |
| CO shutoff | No |
| Type approval | ECE R122 |
| Build | |
| Dimensions | 12.25 x 4.78 x 4.85 in |
| Weight | 5.7 lb |
| Warranty | 2 years |
Alternatives in this type
JEABONG JB-016 8kW Diesel Heater
#34 in SplitFull review
A bare bones split heater for DIY installers in the mountains who want automatic altitude adjustment at the lowest price. The short warranty and missing specs make it a gamble.
Amazon $90$90
JEABONG JB-018 8kW Diesel Heater
#35 in SplitFull review
A cheap split kit with its own tank and automatic altitude adjustment, for DIY van and truck builds at elevation. The 3 month warranty is the catch.
Amazon $102.99$102.99
Compare
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