Quiet Diesel Parking Heater for Vans, RVs, and Work Vehicles
Stay warm through cold mornings and winter stops with fast heat-up, quiet overnight comfort, and efficient cabin heating. The Webasto Air Top Pro 25 delivers 2,400–8,500 BTU/hr (0.7–2.5 kW) of stepless heating power, automatic altitude adjustment, and broad vehicle compatibility for recreational and professional use.
Benefits & Use Cases
The Webasto Air Top Pro 25 is built for drivers, builders, and operators who need dependable heat without bulky equipment or loud overnight operation. In boost mode, it delivers up to 8,500 BTU/hr (2.5 kW) for fast warm-up, then uses stepless temperature-controlled regulation to maintain the selected cabin temperature.
Available from mid-2026. To register interest, confirm fitment, or ask about future availability, please use the contact form above.
- Wide heating range from 2,400–8,500 BTU/hr (0.7–2.5 kW) for mild nights and freezing conditions
- Constant 8,500 BTU/hr (2.5 kW) boost mode for up to 6 hours
- Whisper-quiet eco operation thanks to a new fan design and brushless EC drive
- Automatic altitude functionality up to 18,045 ft (5,500 m), with maximum heating output up to 9,843 ft (3,000 m)
- Compatible with CAN, LIN, and CI-Bus systems for modern vehicle integration
- Can be installed inside the vehicle or externally on the chassis
Technical
- Fuel Type: Diesel according to DIN EN 590; paraffinic fuel HVO/GTL according to DIN EN 15940; gasoline E0–E10 according to EN 228
- Voltage: Diesel 12V or 24V; gasoline 12V
- Heat Output: 2,400 - 6,800 BTU/hr control range with 8,500 BTU/hr boost (0.7–2.0 kW control range with 2.5 kW boost)
- Boost Duration: up to 6 hours at 8,500 BTU/hr (2.5 kW)
- Operating Temperature Range: -40 °F to 104 °F (-40 °C to +40 °C)
- Max Altitude: operation up to 18,045 ft (5,500 m); maximum heating output up to 9,843 ft (3,000 m)
- Dimensions: 12.6 × 5.0 × 4.9 in (321 × 127 × 124 mm)
- Weight: 6.5 lb (2.95 kg)
- Mechanical Interface: identical to Air Top 2000 STC
- Electrical Interface: 500 mm wiring harness with 8-pin connector and separate 1,000 mm dosing pump cable, or integrated wiring harness option
- Communication Interface: LIN, CAN, and CI-Bus
- Certifications: ECE R10, ECE R122, CE; cyber security according to ISO/SAE 21434; suitable for ADR use
Vehicle Compatibility
- Camping vehicles, camper vans, and recreational vehicles
- Trucks, light commercial vehicles, and specialty vehicles
- Buses and passenger transport applications
- Boats and marine cabin heating installations
- Construction, agricultural, and off-highway machinery
- Vehicles transporting hazardous goods where ADR suitability is required
FAQs
When will the Webasto Air Top Pro 25 be available?
The Air Top Pro 25 is expected to be available from mid-2026. This Coming Soon listing lets you register interest and confirm whether the diesel or gasoline version is right for your build.
Is the Air Top Pro 25 suitable for high-altitude travel?
Yes, the heater supports operation up to 18,045 ft (5,500 m) and maximum heating output up to 9,843 ft (3,000 m). This makes it a strong option for mountain travel and winter routes.
Can I use this heater in a camper van or RV?
Yes, the Air Top Pro 25 is designed for camping vehicles, vans, RVs, light vehicles, and other mobile applications. Confirm voltage, fuel type, and mounting location before planning the install.
What controls can be used with the Air Top Pro 25?
Webasto lists compatibility with ThermoConnect, UniControl, Telestart, MultiControl, and a digital rotary selector. It also supports LIN, CAN, and CI-Bus communication for vehicle integration.
Can the Air Top Pro 25 be installed outside the vehicle?
Yes, Webasto states the air heater can be installed inside the vehicle or externally on the chassis. Final mounting should follow the official installation guidance when released.
Technical Specifications of the Webasto Air Top Pro 25 Heater
- Fuel:
- Diesel
- Heater Model:
- Air Top Pro 25
- Max. Heat Output:
- 8,500 BTU (2.5 kW)
- Voltage:
- 24V
- Max. Altitude:
- 18,000 ft (5,500 m)
- Voltage:
- 12V
Included in the kit:
Quiet Diesel Parking Heater for Vans, RVs, and Work Vehicles
Stay warm through cold mornings and winter stops with fast heat-up, quiet overnight comfort, and efficient cabin heating. The Webasto Air Top Pro 25 delivers 2,400–8,500 BTU/hr (0.7–2.5 kW) of stepless heating power, automatic altitude adjustment, and broad vehicle compatibility for recreational and professional use.
Benefits & Use Cases
The Webasto Air Top Pro 25 is built for drivers, builders, and operators who need dependable heat without bulky equipment or loud overnight operation. In boost mode, it delivers up to 8,500 BTU/hr (2.5 kW) for fast warm-up, then uses stepless temperature-controlled regulation to maintain the selected cabin temperature.
Available from mid-2026. To register interest, confirm fitment, or ask about future availability, please use the contact form above.
- Wide heating range from 2,400–8,500 BTU/hr (0.7–2.5 kW) for mild nights and freezing conditions
- Constant 8,500 BTU/hr (2.5 kW) boost mode for up to 6 hours
- Whisper-quiet eco operation thanks to a new fan design and brushless EC drive
- Automatic altitude functionality up to 18,045 ft (5,500 m), with maximum heating output up to 9,843 ft (3,000 m)
- Compatible with CAN, LIN, and CI-Bus systems for modern vehicle integration
- Can be installed inside the vehicle or externally on the chassis
Technical
- Fuel Type: Diesel according to DIN EN 590; paraffinic fuel HVO/GTL according to DIN EN 15940; gasoline E0–E10 according to EN 228
- Voltage: Diesel 12V or 24V; gasoline 12V
- Heat Output: 2,400 - 6,800 BTU/hr control range with 8,500 BTU/hr boost (0.7–2.0 kW control range with 2.5 kW boost)
- Boost Duration: up to 6 hours at 8,500 BTU/hr (2.5 kW)
- Operating Temperature Range: -40 °F to 104 °F (-40 °C to +40 °C)
- Max Altitude: operation up to 18,045 ft (5,500 m); maximum heating output up to 9,843 ft (3,000 m)
- Dimensions: 12.6 × 5.0 × 4.9 in (321 × 127 × 124 mm)
- Weight: 6.5 lb (2.95 kg)
- Mechanical Interface: identical to Air Top 2000 STC
- Electrical Interface: 500 mm wiring harness with 8-pin connector and separate 1,000 mm dosing pump cable, or integrated wiring harness option
- Communication Interface: LIN, CAN, and CI-Bus
- Certifications: ECE R10, ECE R122, CE; cyber security according to ISO/SAE 21434; suitable for ADR use
Vehicle Compatibility
- Camping vehicles, camper vans, and recreational vehicles
- Trucks, light commercial vehicles, and specialty vehicles
- Buses and passenger transport applications
- Boats and marine cabin heating installations
- Construction, agricultural, and off-highway machinery
- Vehicles transporting hazardous goods where ADR suitability is required
FAQs
When will the Webasto Air Top Pro 25 be available?
The Air Top Pro 25 is expected to be available from mid-2026. This Coming Soon listing lets you register interest and confirm whether the diesel or gasoline version is right for your build.
Is the Air Top Pro 25 suitable for high-altitude travel?
Yes, the heater supports operation up to 18,045 ft (5,500 m) and maximum heating output up to 9,843 ft (3,000 m). This makes it a strong option for mountain travel and winter routes.
Can I use this heater in a camper van or RV?
Yes, the Air Top Pro 25 is designed for camping vehicles, vans, RVs, light vehicles, and other mobile applications. Confirm voltage, fuel type, and mounting location before planning the install.
What controls can be used with the Air Top Pro 25?
Webasto lists compatibility with ThermoConnect, UniControl, Telestart, MultiControl, and a digital rotary selector. It also supports LIN, CAN, and CI-Bus communication for vehicle integration.
Can the Air Top Pro 25 be installed outside the vehicle?
Yes, Webasto states the air heater can be installed inside the vehicle or externally on the chassis. Final mounting should follow the official installation guidance when released.
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact [email protected] 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.
