Water heaters

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Webasto water heaters provide warmth and comfort for a variety of vehicles, including cars, trucks, light commercial vehicles, camping vehicles, specialty vehicles, boats and machinery. These heating systems feature a compact design and provide heating output for a range of applications. They are connected to the vehicle's coolant circuit and circulate warm air into the vehicle via the air outlets in the dashboard.

Cutaway of a vehicle's auxiliary coolant heater and routed heating circuit, highlighting cabin heat delivery and integration in Webasto thermal management.

Water heater in a car

Cutaway RV illustrating compact heater installation with coolant routing and cabin heat outlets; demonstrates Webasto thermal management integration for RVs.

Water heater in a recreational vehicle

Transparent transporter showing Webasto water heater and ducting, demonstrating system-level thermal management and cabin heating integration.

Water heater in a light commercial vehicle

Integrated Webasto water heater and heating circuit in a midibus, showcasing system-level thermal management for cabin heating, comfort and OEM integration.

Water heater in a bus

Cutaway of a truck highlighting an auxiliary water heater and cabin airflow to illustrate Webasto's integrated thermal management for commercial trucks.

Water heater in a truck

Cutaway of Webasto vehicle water-heating and thermal-management in an ambulance, featuring heater unit, fluid lines and patient-compartment climate control.

Water heater in an ambulance

Tractor cutaway highlighting Webasto system water heater and coolant lines integrated into engine and cab heating circuit for off-road thermal management.

Water heater in a construction vehicle

Product overview

Benefits of water heaters

Compact size

Webasto parking heaters are characterized by an ultra-compact design in their respective heating class. They combine a compact design with heating output for a wide range of applications

Versatile heating

Different models are designed to provide heating for small and large interior spaces across a range of operating conditions.

Easy to install

The different vehicle-specific installation kits available simplify the installation process for a wide range of common vehicle models.

Thermo E+ 200/320

Webasto Thermo E+ 200/320 water heater for heavy-duty vehicles — engine pre-heating and cabin heating with low fuel use and -40°C reliability

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Thermo Top Evo Smart

Thermo Top Evo Smart parking heater — compact 12V system up to 5 kW, comfort heating, part-load efficiency, biofuels compatible and DIN 21434 certified

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Thermo Top Pro 50

Thermo Top Pro 50 coolant heater, 24V diesel unit delivering up to 5 kW for professional applications; quiet operation and LIN/analog

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Thermo Top Evo

Thermo Top Evo parking heater: fast, compact, cabin pre‑heating up to 5 kW for cars & RVs; supports engine preheat and integrates with vehicle systems

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Thermo Pro 90

Webasto Thermo Pro 90 parking heater supplies 1.8–9.1 kW of fast coolant and cabin preheating for large commercial vehicles, high‑altitude capable

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Thermo Top Pro 120/150

Thermo Top Pro 120/150 - Webasto 12/15 kW parking heaters for buses, trucks and marine; 12/24 V, -40°C rated, altitude adjustment to 3,500 m, HVO compatible

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Thermo plus 230/300/350

Webasto Thermo Plus 230/300/350 parking water heaters provide up to 35 kW engine pre-heating and quiet cabin heating for heavy-duty vehicles

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Air heaters

Explore the range of air heaters from Webasto, offering quick heating for various vehicles

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Heating

Integrated heat exchangers

Integrated heat exchangers using engine residual heat to heat cabins of minibuses, commercial and construction vehicles, by Webasto as system partner

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Excavator and wheel loader at dusk on a construction site, illustrating heavy-duty applications for Webasto battery, HVAC and thermal-management solutions.

Cooling

Rooftop air-conditioning systems

Webasto system partner rooftop air-conditioning systems — energy-efficient HVAC for buses, commercial vehicles and RVs, 2-22 kW cooling, optional heating

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Intercity coach with rooftop air-conditioning unit driving through countryside, demonstrating Webasto's commercial vehicle HVAC and roof-system integration.

Cooling

Integrated air-conditioning systems

Integrated air-conditioning systems for minibuses & commercial vehicles — efficient, durable cooling with flexible installation from Webasto, system partner

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Passenger entering climate-controlled minivan with luggage, demonstrating Webasto integrated air-conditioning and thermal management for passenger transport.

Water heaters