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Heating solutions for
boats

Engine-independent cabin, engine and propulsion battery heating on sailboats, motorboats and yachts

Webasto diesel and electric heating systems for boats and yachts can be selected for different destinations, heating requirements and boat sizes. The air and water heaters and accessories have been specially developed for use on board. With heating outputs between 2 and 120 kW, there is a solution for every requirement. For retrofitting, please contact one of our installation partners in your area who specializes in boats.

Air heaters for boats

Our Air-Top models heat the air directly with a heating output of between 2 and 5.5 kW and blow it into the cabin at individually definable outlet points. To implement the ideal installation solution for the heater, the air outlets, the fresh air intake and the exhaust air, Webasto offers a wide range of stainless steel accessories. You can also combine two heaters if your heating requirements are greater. Webasto air heaters are extremely efficient and quiet. Thanks to their compact size, they do not take up much space on board. For operation, you can choose between the easy-to-understand, central MultiControl or the ThermoConnect app, which can be controlled from anywhere.

Key facts

  • Simple installation
  • Fast heating up
  • Reliable dehumidification of the cabin
Winter sunset on a yacht bow in the Baltic Sea with frost and warm cabin glow, showcasing Webasto Marine heating systems for reliable thermal comfort at sea. Webasto Marine Solutions – Winter Yacht Deck, Baltic Sea

Product overview marine air heaters

  • Air Top Pro 25

    Air Top Pro 25 diesel air heater by Webasto delivers 0.7–2.5 kW, whisper‑quiet, altitude‑ready and plug‑and‑play vehicle & marine integration
    Air Top Pro 25 compact air heater delivering rapid cabin heating and efficient integration into Webasto's thermal management and electrification systems. Webasto Air Top Pro 25 diesel heater - orange header banner
  • Air Top Evo 40/55 (Marine)

    Webasto system partner Air Top Evo 40/55 marine air heaters provide quiet, efficient 4-5.5 kW cabin heating for yachts and larger boats, compact and cold-start
    Webasto Air Top Evo 40/55 compact auxiliary air heater for vehicle cabins and cargo spaces on an orange tech background emphasizing system integration. Webasto Air Top Evo 40/55 diesel heater unit header image
  • Air Top 2000 STC (Marine)

    Air Top 2000 STC marine air heater — compact 2 kW diesel unit delivering quiet, efficient cabin heating, precise temp control, W-bus integration, easy service
    Air Top 2000 STC compact diesel air heater on orange technical background, emphasizing Webasto's vehicle thermal management and cabin heating systems. Webasto Air Top 2000 STC Diesel Air Heater – Product Header Visual

Water heaters for boats

Our water heaters come in various sizes, from 5 to 120 kW heat output. They heat the water in a radiator system, which then heats the air in the various areas on board. It is also possible to integrate a boiler into the circuit to heat water. The advantages of water heating are very even heat and the option of preheating the engine. Some appliances can be integrated into a complete A/C system.

Key facts

  • Compact size
  • Diesel or HVO as fuel
  • Efficient and low emission
  • Very quiet
  • Many installation variants
HVH Enjoy a day on the ship for the things of Spain

Product overview marine water heaters

  • Air Top 2000 STC (Marine)

    Air Top 2000 STC marine air heater — compact 2 kW diesel unit delivering quiet, efficient cabin heating, precise temp control, W-bus integration, easy service
    Air Top 2000 STC compact diesel air heater on orange technical background, emphasizing Webasto's vehicle thermal management and cabin heating systems. Webasto Air Top 2000 STC Diesel Air Heater – Product Header Visual
  • Air Top Evo 40/55 (Marine)

    Webasto system partner Air Top Evo 40/55 marine air heaters provide quiet, efficient 4-5.5 kW cabin heating for yachts and larger boats, compact and cold-start
    Webasto Air Top Evo 40/55 compact auxiliary air heater for vehicle cabins and cargo spaces on an orange tech background emphasizing system integration. Webasto Air Top Evo 40/55 diesel heater unit header image
  • Thermo Pro 50 Eco (Marine)

    Thermo Pro 50 Eco marine water heater — compact 5 kW diesel coolant heater for quiet cabin heating, hot water and engine preheating within Webasto systems
    Thermo Top Pro 50 compact hydronic heater on a technical thermal network backdrop, reflecting Webasto's expertise in vehicle heating and thermal management. Thermo Top Pro 50 diesel heater module - Webasto vehicle heating
  • Thermo Pro 90 / Thermo Pro 90 Chiller (Marine)

    Webasto Thermo Pro 90 marine coolant heaters: 1.8–9.1 kW diesel, stepless control, compact, low-noise and reliable onboard heating as Webasto system partner
    Compact auxiliary heater with integrated pump and control module on orange technical background, illustrating Webasto's vehicle thermal management capabilities. Webasto Thermo Pro 90 High-Voltage Electric Heater Header
  • Thermo Top Pro 120/150 (Marine)

    Webasto Thermo Top Pro 120/150 marine heaters — compact, quiet diesel/HVO 12/24V units delivering 12–15 kW for dependable onboard heating and integration
    Thermo Top Pro 120/150 liquid heater on technical backdrop, illustrating Webasto's high-efficiency auxiliary heating and vehicle thermal-management systems. Webasto heater unit on orange digital tech background

Heating solutions for e-boats

For battery electric boats, Webasto offers extremely efficient high-voltage heaters (HVH) with heating outputs between 5 and 12 kW. With their clever stratified heating technology, the HVHs convert direct current into heat with virtually no loss. All models are ISO 21434-compliant, but differ in terms of voltage, communication interfaces and service life. Thanks to their extremely compact design, the HVHs require very little installation space. They can heat both the cabin and the drive batteries, thus increasing their service life and range.

Key facts

  • Efficient heating layer technology
  • Extremely compact design
  • No rare earths
  • Increases battery life and range
  • Flexible installation positions
  • Long service life between 12,000 and 25,000 operating hours
HVH Webasto Marine Systems for Luxury Yacht Cruising and Comfort

Product overview heaters for e-boats

  • 400 Volt High Voltage Heater

    Webasto system partner HVH 50/70 high-voltage heater for 400 V systems delivers rapid heat-up, 5–7 kW, >95% efficiency, compact integration and precise coolant management
    HVH 50/70 high-voltage heater on orange technical backdrop, presenting Webasto's compact electric heater module with HV connectors for EV thermal management. Webasto HVH 50/70 high-voltage heater module for e-vehicles
  • 800 Volt High Voltage Heater

    Webasto 800 V High Voltage Heater (HVH) delivers up to 12 kW efficient, fast, compact cabin & battery heating for commercial EVs, ISO 26262/21434 compliant
    HVH 100 Compact and HVH 120 high-voltage heaters on a technical orange backdrop, representing Webasto thermal management solutions for electrified vehicles. Webasto HVH 800 Volt high-voltage heater module header image

Downloads

Marine - Catalog

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23 MB
Format
application/pdf
Download

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    Webasto system partner for integrated heating, cooling and thermal management for defense vehicles and shelters, ensuring mission readiness in extreme conditions
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