High-output diesel air heater for bigger rigs and cold climates
Warm large cabins fast with quiet, efficient heat - perfect for van builds, RVs, and evo sleeper truck cabs. The Air Top EVO 40 delivers up to 13,650 BTU (4 kW) with simple, glove-friendly Rheostat control and easy service using genuine Webasto heater parts.
Benefits & Use Cases - EVO 40
Cut idling, save fuel, and keep crews comfortable with dependable diesel air heat. The EVO 40 balances strong output with low noise so you can sleep, drive, or work in comfort.
- Strong 13,650 BTU heating for mid-to-large interiors and rapid warm-ups.
- Rheostat dial for quick, intuitive temperature adjustment.
- Engine-off operation reduces fuel costs and wear.
- High-altitude capability up to 18,000 ft (5,500 m) for mountain travel.
Technical Specifications
- Fuel: Diesel
- Voltage: 12V
- Heat output: 4 kW (≈ 13,650 BTU)
- Fuel consumption: 0.26–0.56 L/h (≈ 0.04–0.12 gal/h)
- Rated power draw: 15–40 W (boost ~55 W)
- Max operating altitude: 5,500 m (≈ 18,000 ft)
- Heater body dimensions: 423 × 162 × 148 mm (≈ 16.7 × 6.4 × 5.8 in)
- Part numbers: 5011170 / 5011170B
- Certifications: ECE-R10 (EMC), ECE-R122 (heater)
- Warranty: 2 years
Vehicle Compatibility
- Conversion Van
- Light Medium Duty
- Motorized RV
- Coach / Transit Bus
- Commercial Truck (incl. sleeper cabs)
- Cargo
- Off-Highway
- Municipality
- Ground Support Equipment
- Emergency & Specialty Vehicle
Kit Includes
- Webasto Evo 40 12V Diesel Heater Unit
- Electrical harnesses and connections (4.3 m / 14ft)
- Rheostat Controller
- Fuel Pump DP42 and fuel line (4m / 14ft)
- Fuel filter and mounting accesories
- Fuel Standpipe
- Mounting Plate with gasket and base seal
- Flexible Stainless Steel Exhaust hose with accessories (1.2m / 3.9ft)
- Combustion Air intake tube
- Flexible hot air ducting - 90mm (1m and .5m pieces)
- Flexibe hot air ducting - 60mm (1m)
- Air Inlet grille
- 360 degree rotating hot air vent and ducting connector
- Operation/Installation Manual
Manuals
Technical Specifications of the Webasto Air Top EVO 40 Diesel 12V Heater Kit with Rheostat Controller
- Fuel:
- Diesel
- Part Number:
- 5011170 / 5011170B
- Voltage:
- 12V
- Max. Heat Output:
- 13,650 BTU (4 kW)
- Fuel Consumption:
- 0.04 - 0.12 gal/h (0.26 - 0.56 l/h)
- Heater model:
- Air Top EVO 40
- Max. Altitude:
- 18,000 ft (5,500 m)
Included in the kit:
High-output diesel air heater for bigger rigs and cold climates
Warm large cabins fast with quiet, efficient heat - perfect for van builds, RVs, and evo sleeper truck cabs. The Air Top EVO 40 delivers up to 13,650 BTU (4 kW) with simple, glove-friendly Rheostat control and easy service using genuine Webasto heater parts.
Benefits & Use Cases - EVO 40
Cut idling, save fuel, and keep crews comfortable with dependable diesel air heat. The EVO 40 balances strong output with low noise so you can sleep, drive, or work in comfort.
- Strong 13,650 BTU heating for mid-to-large interiors and rapid warm-ups.
- Rheostat dial for quick, intuitive temperature adjustment.
- Engine-off operation reduces fuel costs and wear.
- High-altitude capability up to 18,000 ft (5,500 m) for mountain travel.
Technical Specifications
- Fuel: Diesel
- Voltage: 12V
- Heat output: 4 kW (≈ 13,650 BTU)
- Fuel consumption: 0.26–0.56 L/h (≈ 0.04–0.12 gal/h)
- Rated power draw: 15–40 W (boost ~55 W)
- Max operating altitude: 5,500 m (≈ 18,000 ft)
- Heater body dimensions: 423 × 162 × 148 mm (≈ 16.7 × 6.4 × 5.8 in)
- Part numbers: 5011170 / 5011170B
- Certifications: ECE-R10 (EMC), ECE-R122 (heater)
- Warranty: 2 years
Vehicle Compatibility
- Conversion Van
- Light Medium Duty
- Motorized RV
- Coach / Transit Bus
- Commercial Truck (incl. sleeper cabs)
- Cargo
- Off-Highway
- Municipality
- Ground Support Equipment
- Emergency & Specialty Vehicle
Kit Includes
- Webasto Evo 40 12V Diesel Heater Unit
- Electrical harnesses and connections (4.3 m / 14ft)
- Rheostat Controller
- Fuel Pump DP42 and fuel line (4m / 14ft)
- Fuel filter and mounting accesories
- Fuel Standpipe
- Mounting Plate with gasket and base seal
- Flexible Stainless Steel Exhaust hose with accessories (1.2m / 3.9ft)
- Combustion Air intake tube
- Flexible hot air ducting - 90mm (1m and .5m pieces)
- Flexibe hot air ducting - 60mm (1m)
- Air Inlet grille
- 360 degree rotating hot air vent and ducting connector
- Operation/Installation Manual
Manuals
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact support@heatso.com if you need help picking the right options or have any questions.
Shipping
- United States - 1-5 Working Days
- United Kingdom - 2-5 Working Days
- European Union - 2-7 Working Days
- Australia / New Zealand - 5-14 Working Days
- Rest of World - 5-14 Working Days
There may be a delay if the order is shipped to a PO or parcel shop address. Please note, some couriers do not offer shipping to PO boxes.
View full shipping & Delivery information
Returns
You can return or exchange goods within 14 days from the date of purchase if the item is unused and brand new in unopened packaging. You must contact us before returning any goods, though. Additional deductions might be applied as indicated in the Returns section of our Terms and Conditions.
Warranty Information
Most heaters come with 2 year warranty + optional 1 year extended Warranty available
- Parts - 1 Year Warranty
- Refrigerators - 2 Year Warranty
- AC Systems - 1 Year Warranty
- Heavy duty heating equipment (10 kW+) - 1 Year Warranty
- Other items - 1 Year Warranty
Installation, servicing and maintenance must be done in accordance with manufacturers guidelines. Failure to follow these guidelines will result in voiding your warranty.
We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us.
If you require removing and/or refitting your item, please visit a local professional or authorized specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.
Customer reviews
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Webasto Air Top EVO 40 Diesel 12V Heater Kit with Rheostat Controller
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ok
Good heater, fast shipping
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We as to air top 40
Great hearer but didn’t come with any installation instructions or wiring diagram
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ok
Good heater, fast shipping