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 are compact, powerful and easy to install. 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 deliver powerful heating output while fitting into compact spaces.

Reliable warmth

Different models ensure efficient heating of small and large interior spaces, even under extreme conditions.

Easy to install

The different vehicle-specific installation kits available simplify the installation process for almost all common vehicle models.

Thermo E+ 200/320

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

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Webasto Thermo Plus 230/300/350 Diesel Heater Header Graphic
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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Webasto Thermo Top Evo Smart diesel heater header image
Thermo Top Pro 50

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

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Thermo Top Pro 50 diesel heater module - Webasto vehicle heating
Thermo Top Evo

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

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Webasto Thermo Top Evo and Thermo Pro 50 Eco heater header
Thermo Pro 90

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

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Webasto Thermo Pro 90 High-Voltage Electric Heater Header
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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Webasto heater unit on orange digital tech background
Thermo plus 230/300/350

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

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Webasto Thermo Plus 230/300/350 Diesel Heater Header Graphic

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Air heaters

Explore the range of air heaters from Webasto, offering quick, efficient heating for various vehicles with low fuel consumption.

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Heating

Integrated heat exchangers

Integrated heat exchangers using engine residual heat to efficiently 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.

Air heaters / Integrated heat exchangers
Integrated air-conditioning / Rooftop air-conditioning

Water heaters