Diesel heater Air Top Pro 25

for boat12-24V12 V

Overview
The Air Top Pro 25 is a compact air heater engineered for commercial and specialist vehicles: motorhomes, trucks, vans, buses, special-purpose vehicles, boats, construction and agricultural machinery. It offers the widest heating output range in its class with stepless power control and a fast-acting boost mode for rapid warm-up. Redesigned components (heat exchanger, burner, blower module) improve energy efficiency while reducing power consumption and noise. The unit is suitable for interior installation or external chassis mounting. Available from mid-2026.

Key features

• Wide heating output range with stepless power control for fast warm-up and stable temperature maintenance.
• New heat exchanger, burner and blower module for increased energy efficiency, lower consumption and reduced noise.
• Quiet operation in low-output/continuous modes; dedicated eco mode for reduced noise during sleep.
• Flexible installation: interior mounting or external chassis mounting options.
• Plug & play wiring harnesses for faster, error-reduced installation while maintaining compatibility with many existing accessories.
• Connectivity and control: supports CI, LIN and CAN bus; compatible with vehicle control panels and dedicated control elements.
• Altitude-capable: automatic altitude adjustment; designed for reliable operation at high altitudes.
• Fuel variants: standard diesel and approved paraffinic fuels (HVO/GTL); gasoline variant available.

Benefits

• Broad power range — heating output approximately 0.7 kW up to 2.5 kW (boost) for versatile applications and reduced consumption.
• Improved onboard comfort — low noise in continuous range and eco mode for restful sleeping conditions.
• High-altitude performance — automatic altitude compensation; operational up to 5,500 m with full heating performance maintained to ~3,000 m.
• Easy vehicle integration — multiple bus interfaces (CI, LIN, CAN) for seamless control integration.
• Simplified installation — new plug & play harnesses speed up installation and reduce wiring errors.
• Strong heating performance — immediate comfort in boost mode with up to 2.5 kW output.

Model overview

• Air Top Pro 25 Diesel 12 V
• Air Top Pro 25 Diesel 24 V
• Air Top Pro 25 Gasoline 12 V

Downloads

• Product datasheet available for download.

Technical specifications

• Dimensions (L x W x H): 321 x 127 x 124 mm
• Weight: 2.95 kg
• Heating output range: approx. 0.7 kW up to 2.5 kW (boost)
• Rated voltage: Diesel variants: 12 V or 24 V; Gasoline variant: 12 V
• Fuel: Diesel (DIN EN 590); paraffinic fuels (HVO/GTL) (DIN EN 15940); gasoline (E0–E10 EN 228)
• Operating temperature range: -40 °C to +40 °C
• Altitude capability: automatic altitude adjustment; operational up to 5,500 m; full heating performance up to approx. 3,000 m
• Controls / interfaces: CI, LIN, CAN bus; compatible with vehicle control panels and dedicated control elements
• Installation: interior mounting or external chassis mounting options