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High Voltage Heaters designed for reliable, efficient, and responsive heating

The electric High Voltage Heater (HVH) is the ideal heating system for battery electric vehicles (BEV) and plug-in hybrids (PHEV). It converts direct current (DC) electric power into heat with high energy conversion efficiency. The HVH is offered with heat outputs of 5 kilowatt (kW), 7 kW, 10 kW and 12 kW.

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Tailored solutions for automotive manufacturers

Webasto develops and manufactures thermo systems for all well-known automobile manufacturers worldwide. 

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Tailored heating solutions for automotive manufacturers

Innovative heating layer technology

The HVH heating element, just 0.6 mm thin and 200 cm² in size, consists of a complex layer system and is firmly bonded to the heat exchanger. This allows electrical power to be converted into heat through an efficient heating process.

Innovative heating layer technology - High Voltage Heater

Benefits of High Voltage Heaters

Constant heat output

The power of the HVH is constant and independent of the coolant temperature or operating voltage.

Powertrain Care

The HVH does not produce inrush current and supports thus a stable system. This supports battery temperature management and operation within the intended operating conditions.

Optimized installation

The compact design of the HVH and its low weight allow flexible installation positions in the engine compartment. An intelligent architecture enables easy Plug & Play installation in series production. 

Product overview High Voltage Heater

  • 400 Volt High Voltage Heater

    Webasto HVH 50/70 high-voltage heater for 400 V EVs — 5–7 kW coolant heater with an efficiency of more than 95% and integrated thermal management
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    HVH 50/70 high-voltage heater on an orange technical backdrop, showcasing Webasto’s compact HV heater module with HV connectors for EV thermal management.

  • 800 Volt High Voltage Heater

    800 V High Voltage Heater (HVH) - compact DC heaters up to 12 kW for commercial EVs, rapid cabin & battery conditioning, ISO 21434 safety
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    HVH 100 Compact and HVH 120 high-voltage heaters against a technical orange backdrop, representing Webasto system thermal management for electric vehicles.

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