Nomad Gear Finder
Webasto Air Top EVO 55
Webasto Air Top EVO 55 Large RV Motorhome Diesel Furnace 12v 5.5kw 18765 BTU Heater Kit
A 12V/24V split diesel air heater that modulates from 1.5 to 5.5 kW (18800 BTU/h) with 220 m³/h of airflow, the most listed, and burns 0.18 to 0.67 L/h. It adjusts automatically for altitude, works down to -40 ℃ and is ECE R122 approved. Its output is higher than the other premium split heaters, so it suits larger motorhomes and permanent installs.
$1,925.00 as of – Details
Only 6 left in stock - order soon on Amazon
- Max heat output
- 5.5 kW
- Min heat output
- 1.5 kW
- Max heat output (BTU/h)
- 18,800 BTU/h
- Air flow
- 220 m³/h
- Brand
- Webasto
Rankings in the diesel heaters Category
How does this product compare with others in Nomad Gear Finder's diesel heaters category?
- Min heat output 1.5 kW Higher than 84% of 19 others
- Air flow 220 m³/h The highest of 6
- Fuel consumption max 0.180 gal/h 0.67 L/h The highest of 55
- Running power draw 95 W The highest of 19
- Max operating altitude 7,218 ft The lowest of 46
- Max operating altitude (m) 2,200 m Lower than 97% of 46 others
Compare this product with close matches Compare with all diesel heaters
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Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase; see our About page for more information.
Core specs
- Heater type
- Split
- Max heat output
- 5.5 kW
- Min heat output
- 1.5 kW
- Max heat output (BTU/h)
- 18,800 BTU/h
- Air flow
- 220 m³/h
Fuel
- Fuel consumption min
- 0.18 L/h
- Fuel consumption max
- 0.180 gal/h 0.67 L/h
Power
- DC input voltage
- 12V / 24V
- Running power draw
- 95 W
Physical Attributes
- Weight
- 13.00 lbs 5.90 kg
- Length
- 16.70 in. 423 mm
- Width
- 5.80 in. 148 mm
- Depth/Height
- 6.40 in. 162 mm
Altitude
- Max operating altitude
- 7,218 ft
- Max operating altitude (m)
- 2,200 m
- Altitude adjustment
- Automatic
Operating Temp Range
- Operating temp min
- -40 ℉ -40 ℃
Warranty & Certification
- ECE R122 approved
- Yes
- ECE R10 (E-mark) EMC
- Yes
Features
Details from the Webasto Air Top EVO 55 Amazon listing:
- Webasto
Similar products from other brands
Chosen for their similar specs and price:
 This productWebasto Air Top EVO 55 |
 Longroadaccess Air 4D |
 Eberspächer Airtronic M3 D4L |
 LF Bros Split T3 |
|
|---|---|---|---|---|
| Price | $1,925.00 | $1,299.99 | $1,675.00 | $189.99 |
| Model | Air Top EVO 55 | Air 4D | Airtronic M3 D4L | Split T3 |
| Popular brand | Yes | No | Yes | No |
| Heater type | Split | Split | Split | Split |
| Max heat output kW | 5.5 | 4.0 | 4.0 | 5.0 |
| Min heat output kW | 1.5 | 1.0 | 1.1 | 1.4 |
| Max heat output (BTU/h) BTU/h | 18,800 | 13,648 | 13,648 | 17,000 |
| Air flow m³/h | 220 | 168 | – | – |
| Fuel tank capacity L | – | – | – | 10.0 |
| Fuel tank capacity gal | – | – | – | 2.6 |
| Fuel consumption min L/h | 0.18 | 0.12 | 0.12 | 0.18 |
| Fuel consumption max L/h | 0.67 | 0.51 | 0.49 | 0.53 |
| Fuel consumption max gal/h | 0.180 | 0.136 | 0.129 | 0.140 |
| Thermostat mode | – | Yes | – | – |
| Timer | – | – | – | Yes |
| DC input voltage | 12V / 24V | 12V | 12V | 12V |
| Startup power draw W | – | – | 105 | – |
| Running power draw W | 95 | 57 | 37 | – |
| Brushless motor | – | – | Yes | – |
| IP rating | – | – | IP5K4K | – |
| Weight lbs | 13.00 | 11.90 | 9.92 | – |
| Weight kg | 5.90 | 5.40 | 4.50 | – |
| Length in. | 16.70 | 15.83 | 14.80 | 14.88 |
| Length mm | 423 | 402 | 376 | 378 |
| Width in. | 5.80 | 6.18 | 5.51 | 5.55 |
| Width mm | 148 | 157 | 140 | 141 |
| Depth/Height in. | 6.40 | 7.40 | 5.91 | 5.91 |
| Depth/Height mm | 162 | 188 | 150 | 150 |
| Max operating altitude ft | 7,218 | 8,202 | 18,045 | – |
| Max operating altitude (m) m | 2,200 | 2,500 | 5,500 | – |
| Altitude adjustment | Automatic | – | Automatic | – |
| Operating temp min ℃ | -40 | -45 | -40 | -40 |
| Operating temp min ℉ | -40 | -49 | -40 | -40 |
| Overheat protection | – | Yes | Yes | Yes |
| Low-voltage protection | – | Yes | Yes | – |
| Warranty | – | 2 Years | – | 1 Year |
| ECE R122 approved | Yes | Yes | Yes | – |
| ECE R10 (E-mark) EMC | Yes | Yes | Yes | – |
Data sources
Data for this product compiled from these sources:
- https://webasto-group.com/content/dam/webasto/region-specific/us/products/air-heaters/literature/909543_Air%20Top%20Evo%2040-55_SpecSheet.pdf.coredownload.inline.pdf
- https://webasto-group.com/en-us/heating/air-heaters/air-top-evo-40-55.html
- https://www.camperking.co.uk/wp-content/uploads/Air-Top-2000STC-Evo_40-55_RV_datasheet_EN.pdf
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
Specifications last updated Nov 5, 2026.