Webasto Air Top EVO 55

ualified Boat Safety Scheme (BSS) examiner for inland waterway vessel inspections
Gas Safe Registered engineer for marine LPG gas installations and safety certificates
OFTEC certified technician for marine diesel heating and oil-fired appliance servicing


The Webasto Air Top Evo 55 is a high-performance diesel air heater specifically designed for larger marine vessels up to 50 feet. As the most powerful model in the Air Top range, it is the ideal choice for offshore yachts, large narrowboats, and commercial craft that require significant heating capacity and rapid warmth distribution in extreme conditions.

Webasto Air Top Evo 55: Maximum Marine Comfort

Delivering a formidable 5.5 kW of heat output, the Air Top Evo 55 is engineered for efficiency and silence. Its advanced control system allows for precise temperature regulation, ensuring the cabin remains comfortable without the “on/off” cycling common in lesser units. The heater features a “boost” mode for rapid initial heating and an automatic altitude adjustment to maintain clean combustion at varying heights.

Like the Evo 40, the Evo 55 includes the Webasto MultiControl digital interface. This allows you to set timers, manage fan speeds, and switch between heating and ventilation modes with ease.

Professional Installation and BSS Safety

Our OFTEC-trained engineers provide expert Webasto Air Top Evo 55 installations, ensuring that every system meets the high safety standards required for the marine environment. We use marine-spec, room-sealed exhaust systems and insulated hull fittings to guarantee full Boat Safety Scheme (BSS) compliance. For technical support, we recommend consulting the Webasto Corporate Technical Portal or the OFTEC consumer guide.


Side view of a Webasto Air Top Evo 55 marine diesel air heater unit showing air intake and mounting ports.
Webasto Air Top Evo 55: A compact, 5.5kW high-performance diesel heater designed for vessels up to 50 feet.

Webasto Air Top Evo 55 Narrowboat Kit Includes:

Webasto Air Top 5 kW Diesel Heater – 12 Volt
Fuel Pump
Webasto Controller with Timer
Fuel Pick-up Pipe
Electrical harness c/w fuse holders and fuses
1m Exhaust Pipe

Optional extras:

Webasto Room Thermostat

Webasto ThermoConnect TCON 2 

2m Marine Exhaust Pipe

24mm Exhaust Skin Fitting / Hull Fitting

Marine Fuel Filter With Stop Tap

Ducting and Vents

Diesel Appliance Safety Certificate


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