800 Volt
High Voltage Heater

Name: 800 Volt High Voltage Heater
Brand: Webasto
SKU: 800v-hvh

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HVH 100 Compact / HVH 100 Compact+ / HVH 120: High Voltage Heater for electric vehicles

The 800 V High Voltage Heater (HVH) from Webasto is ideal for commercial electric vehicles such as trucks, busses as well as construction and agricultural machinery. It converts DC power into heat with high energy conversion efficiency. This helps reduce energy consumption during operation. The innovative technology of Webasto works with an extremely thin heating layer that is firmly bonded onto the heat exchanger, and a large contact area for heating the coolant. The HVH is designed to provide short heat-up times, precise control, and efficient operation.

The model range comprises the HVH 100 Compact, HVH 100 Compact+ and HVH 120, all of which are ISO 21434-compliant but differ in terms of voltage, communication and service life. The HVH 100 Compact offers 12 V and LIN communication, whereas the HVH 100 Compact+ and HVH 120 additionally provide CAN communication and 24 V.

HVH 100 Compact high-voltage heater — side/top views highlighting compact thermal housing, coolant ports and HV connectors for Webasto vehicle electrification.

HVH 100 Compact and HVH 100 Compact+

HVH 120

Learn more about the 800 Volt HVH series

Benefits of the 800 Volt High Voltage Heater

The HVH is designed to help maintain comfortable cabin temperatures and support vehicle range. In addition, it provides battery conditioning to manage battery temperature during operation. In addition, battery conditioning is supported.

Heating performance

With a heating output of up to 12 kW (HVH 120) and a voltage range of up to 880 V, the 800 V High Voltage Heater series is designed to provide cabin heating for commercial vehicle applications.

Layer technology

With its layer technology, the Webasto High Voltage Heater provides short heat-up times and supports efficient use of electrical energy and vehicle range.

Precise controllability

The HVHs offer precise and stepless controllability.

Reliable safety

With a reliable safety concept and certifications for automotive requirements, the HVHs offer redundant mechanisms to handle faults and guarantee safety.

Compact design

Requiring only a small installation space, the HVH from Webasto can easily be integrated into different vehicles.

International support

Webasto offers a wide range of accessories for the installation of High Voltage Heaters into different vehicles as well as an international support and service network.

Technology highlight

Innovative heating layer technology

The HVH heating element is ultra-thin and bonded directly to the heat exchanger. It converts electrical power into heat using its innovative layer technology. Its compact design and heating layer technology are designed to maintain heating performance across a range of coolant temperatures. Additionally, it avoids the use of rare earths unlike PTC elements.

Product details

All models in the HVH series fulfill high safety standards according to ISO 26262 against overheating, with functional safety levels ranging from ASIL B to D, which is the highest level. In addition, the HVH 100 Compact, HVH 100 Compact+ and HVH 120 are designed and produced to meet cyber security requirements as documented by the ISO 21434 certificate. The HVHs support a high voltage range of 250 to 880 V and low voltages of 12 and 24 V. Communication is carried out via the LIN protocol, with top models also integrating CAN communication and a main switch. The service life of these models ranges between 12,000 and 25,000 hours.

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