Webasto Air Top Evo 55
#13 in SplitFull review
For 24V trucks, buses and larger motorhomes that need a type-approved 5 kW heater with automatic altitude adjustment. It costs far more than clone heaters of the same size.
Amazon $1,697.89$1,697.89
3.1/5
A complete split kit with a big tank and remote for trucks, trailers and boats, but it is a generic clone priced well above others like it.
- 8 kW claimed (about 4 kW from its fuel burn)Heat output
- 0.2 to 0.5 L/hFuel burn
- None publishedType approval
Check price at Amazon$189.99
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Large 15 L tank runs for many hours between fills
- Remote and LCD controller included
- High altitude mode for mountain use
Cons
- Sold as 8 kW, but its fuel burn supports about 4 kW
- Costs about twice as much as near identical clones
- No published warranty or power draw
- No type approval for vehicle installs
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 | WKH-B3 |
|---|---|
| Heating | |
| Heat output (maker) | 8 kW claimed (about 4 kW from its fuel burn) |
| Fuel burn | 0.2 to 0.5 L/h |
| Fuel tank | 15 L |
| Build | Split (installed) |
| Power | |
| Supply | 12V |
| Controls and safety | |
| Remote | Yes |
| Type approval | None published |
Alternatives in this type
VEVOR XMZ-D2 2kW Bluetooth Heater
#14 in SplitFull review
A small, cheap split heater with Bluetooth control and automatic altitude adjustment, sized for cars, small vans and boat cabins.
Amazon $99.90$99.90
Webasto Air Top Evo 40
#16 in SplitFull review
For 24V trucks and buses that need a type-approved 4 kW heater with automatic altitude adjustment. The high price buys Webasto build quality and approval, not more heat.
Amazon $1,945.95$1,945.95
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