The Webasto Thermo Top C is a compact, high-performance auxiliary coolant (water) heater designed for cars, vans, RVs, boats, and commercial vehicles. Built by the German heating experts at Webasto, it’s a reliable solution for cold-weather engine preheating, cabin heating, and defrosting—helping you stay warm and protect your engine during winter.

Key Features

Powerful Heating: Delivers around 5.2 kW of heat output (diesel version), quickly warming up engine coolant and the vehicle interior.
Fuel Options: Available in diesel (most popular) and gasoline models, compatible with 12V or 24V systems.
Compact & Easy to Install: Small footprint makes it perfect for engine bays or custom installations in campers and marine applications.
Smart Operation: Works with timers, remote controls, or vehicle integration for automatic on/off and temperature control.
Efficient & Quiet: Low fuel consumption, quiet running, and environmentally friendly combustion.
Built Tough: Excellent cold-start performance (down to -40°C), vibration-resistant, and engineered for long-term reliability.

Common Uses

Preheating car or truck engines to reduce wear and improve fuel efficiency.
Providing independent heat in RVs, motorhomes, and boats.
Keeping commercial vehicles and heavy equipment warm in harsh winter conditions.

Popular Spare Parts

Common replacement components include:

Burner head kit (with glow plug)
Gasket sets
Circulation water pumps
Fuel dosing pumps
Control unit / heat exchanger assemblies
Wiring harnesses and sensors

Genuine Webasto parts are widely available and make maintenance straightforward.

Why Choose the Thermo Top C? Trusted worldwide for quality and innovation, this heater delivers dependable performance when you need it most. Whether you’re overlanding, living in a van, or working in cold climates, the Webasto Thermo Top C keeps you comfortable and your vehicle ready to go.

Perfect for DIY enthusiasts and professional installers alike! Have questions about compatibility, installation, or specific parts? Feel free to ask in the comments. 😊