£2,313.50
Webasto Air Top EVO 40 4kW 12v Marine Heater Kit with MultiControl HD 7-Day Timer | 4117979A
£2,303.92
Why Butler Technik
- Expert technical knowledge across Webasto, Espar, and Victron
- Fast, reliable parts sourcing and timely shipping
- Outstanding customer service and hands-on troubleshooting
About the product
The Webasto Air Top EVO 40 is a 12 V marine air heater kit with a 4.0 kW output. It provides programmable, adjustable heating independently of the engine, including when the engine is off. Diesel consumption is 0.18 to 0.43 litres per hour, depending on conditions.
The kit includes a MultiControl HD 7-Day Timer with on-board diagnostics, electrical harnesses and connections, a 1.8 m stainless steel exhaust silencer with lagging insulation, and a copper fuel pipe system with a fuel metering pump. It also contains a fuel stand pipe, clips and screws, an installation manual, a stainless steel heater mount bracket and a stainless steel exhaust hull skin fitting.
The heater is certified for installation in passenger areas and near dangerous substances. Ducting and air outlets are not included. The heater has a 24-month warranty.
At a glance
- 12 V marine air heater with 4.0 kW output
- MultiControl HD 7-Day Timer with on-board diagnostics
- Diesel consumption: 0.18–0.43 litres per hour, depending on conditions
- Ducting and air outlets are not included
Specifications11
- Material
- stainless steel
- Dimensions
- 1.8 m exhaust silencer
- In the box
- MultiControl HD 7-Day Timer, electrical harnesses and connections, exhaust silencer with lagging insulation, fuel pipe system with metering pump, fuel stand pipe, clips and screws, installation manual, heater mount bracket and exhaust hull skin fitting
- Voltage
- 12 V
- Heat output
- 4.0 kW
- Diesel consumption
- 0.18–0.43 litres per hour, dependent on conditions
- Control
- MultiControl HD 7-Day Timer with on-board diagnostics
- Heating
- Programmable and adjustable; independent of the engine
- Installation
- Certified for installation in passenger areas and near dangerous substances
- Warranty
- 24 months
- Kit limitation
- Ducting and air outlets are not included
Price history
Price at the shop, last 80 days
The price has stayed at £2,303.92 since 19 August.



