Home

Heating solutions for
buses

Reliable heat for front and passenger compartments in minibuses, midi buses, city buses and coaches

To ensure that every journey is safe and comfortable for drivers and passengers from start to finish, Webasto air and water heaters reliably heat all areas of the bus before and during the journey. Thanks to optional engine preheating, the buses are always ready for use so that timetables can be adhered to even in difficult climatic conditions. Webasto offers a large portfolio of extremely robust heaters. We can equip buses of all sizes and for any application, offering customizable complete solutions. Retrofitting is carried out by our installation partners in your area, which you can find using our dealer locator. In electrically powered vehicles, our powerful, compact high-voltage heaters provide the heat.

Heating solutions for fuel-powered buses

Webasto water heaters preheat the coolant circuit of the vehicle engine even before the journey begins, to ensure that the engine can be started at any time and even at temperatures well below zero degrees. This protects the engine and also reduces emissions and fuel consumption. The air in the front area is also heated by the vehicle fan. The Webasto water heaters recommended for buses are available with heating outputs between 9 and 35 kW. For quick, long-lasting warmth, our air heaters from the Air-Top range heat the interior efficiently and with the highest quality. Their heat output can be selected between 2 and 5.5 kW per device. Several devices distributed in the vehicle can be combined.

Bus on an icy road

For both the air and water heaters, Webasto offers a wide range of applications and accessories for individual original equipment and retrofit solutions. Additional hoses, distributors and air outlets ensure optimum heat distribution. The heaters can be integrated into 12 and 24 V environments and also heat with alternative fuels such as HVO and GtL. Depending on the choice of devices, various control elements are available, such as the smart ThermoConnect app. In addition to the air and water heaters, Webasto offers integrated heat exchangers for using residual engine heat to heat the vehicle interior. Various models offer heating outputs from 3.3 to 13 kW.

Key facts

  • Preconditioning the engine for a safe start
  • Arctic Start for extremely cold environments
  • Altitude adjustment up to 4,500 meters
  • Large selection of devices and accessories for individual solutions
  • Suitable for alternative fuels
  • Reduce fuel consumption and emissions
Bus heating-output simulation visualizing interior heat distribution across the passenger cabin to validate Webasto thermal management and heater performance. Webasto Bus Thermal Management Vehicle Solutions for Passenger Comfort

Product overview water heaters for buses

  • 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
    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
  • 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
    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 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
    Compact hydronic auxiliary heater on orange backdrop, illustrating a thermal-management unit within Webasto system solutions for vehicle electrification. Webasto Thermo Plus 230/300/350 Diesel Heater Header Graphic
  • Air Top Pro 25

    Air Top Pro 25 air heater: 0.7–2.5 kW boost power, whisper‑quiet operation, altitude‑ready to 5,500 m, energy‑efficient design and plug‑play vehicle 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

    Webasto Air Top Evo 40/55 diesel air heaters — 4–5.5 kW fuel‑efficient, quiet cabin heating with altitude compensation; easy install for RVs, trucks and marine
    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

    Air Top 2000 STC air heater from Webasto — compact, fuel-efficient 0.9–2.0 kW heater for vehicles, boats and cargo, flexible installation and simple maintenance
    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

Heating solutions for electrically powered buses

Our extremely efficient high-voltage heaters (HVH) with heating outputs between 5 and 12 kW ensure pleasant temperatures in electric buses. The space-saving devices convert electrical direct current into heat with virtually no losses (more than 95 percent). All models are ISO 21434-compliant, but differ in terms of voltage and communication interfaces. Electric high-voltage heaters from Webasto not only heat the front and passenger compartments, but can also provide optimum temperature control for traction batteries. This has a positive effect on their range and service life.

Key facts

  • Efficient heating layer technology
  • Extremely compact design
  • No rare earths
  • Support low voltages of 12 or 24 V
  • Heating in the high voltage range from 250 to 880 V
  • Increases battery life and range
  • Flexible installation positions
  • Long service life between 12,000 and 25,000 operating hours
  • Simple plug & play installation in series production
HVH Webasto Electric Bus Charging Solutions for Cold Climate Fleets

Product overview heaters for electrically powered buses

  • 400 Volt High Voltage Heater

    Webasto HVH 50/70 high-voltage heater for 400 V EVs — compact, >95% efficient coolant heater delivering 5–7 kW with fast heat-up and precise thermal 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

    800 V High Voltage Heater (HVH) - compact, efficient DC heaters up to 12 kW for commercial EVs, rapid cabin & battery conditioning, ISO 21434 safety
    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

Heating solutions - Catalog

Size
30 MB
Format
application/pdf
Download

Car makers

Innovate mobility

Webasto supplies automotive manufacturers globally with roof, battery & thermo systems. Explore our solutions.

g

End customers

Find your dealer

Use the Webasto Dealer Locator to find your nearest contact and easily request a tailored product offer today.

Dealer Locator for end customers Webasto Talent Acquisition – Targeted Recruitment Visual

Further vehicle solutions

  • Passenger cars

    Webasto system partner providing roof systems, battery systems and efficient heating solutions for passenger cars to enhance safety, comfort and sustainability
    Open panoramic sunroof in a passenger car interior with two people, showcasing Webasto as system partner providing openable roofs for urban mobility. Webasto panoramic roof: open-air comfort, daylight and style
  • Light commercial vehicles

    Heating and cooling solutions for light commercial vehicles: fuel and HV heaters, transport refrigeration for cabin comfort, cargo protection and range extension
    Webasto system partner delivering integrated thermal and HVAC solutions for light commercial vans, highlighting cabin and battery thermal management for OEMs. Webasto Commercial Vehicle Solutions – Van Thermal Management
  • Recreational vehicles

    Webasto system partner for RV heating and cooling solutions for motorhomes & camper vans, diesel and electric heaters plus rooftop A/C for all-season comfort
    Scenic fjord campsite with multiple motorhomes showcasing Webasto vehicle solutions for recreational vehicles, emphasizing heating, battery and roof systems. Webasto Motorhome Solutions for Norwegian fjord campsite comfort
  • Bus

    Webasto system partner for buses — heaters, rooftop & integrated A/C plus HEPA filters for comfort, air quality and efficient e‑bus thermal management
    Integrated thermal management and HVAC systems for light commercial vehicles, showcasing Webasto as a system partner with engineering overlays. Webasto system partner delivering integrated thermal solutions for vans
  • Truck

    Engine-independent truck heating and air-conditioning - Webasto system partner supplying fuel and HV heaters plus standalone A/C for cabin comfort and efficiency
    Logistics semi-trailer at dock, highlighting Webasto as system partner for integrated HVAC, electric heating and thermal management in commercial vehicles. Webasto Commercial Vehicle Solutions – Truck Thermal Management
  • Specialty vehicles

    Webasto system partner for heating, air-conditioning and HEPA filter solutions for emergency and rescue vehicles to ensure reliable starts, cabin comfort and clean air
    Webasto thermal management ambulance concept illustrating integrated HVAC, interior climate control and system partner solutions for emergency vehicles. Webasto Emergency Vehicle Climate and Air Filtration Systems
  • Agricultural machinery

    Webasto system partner for agricultural heaters & A/C: fuel and HV heaters plus rooftop or integrated A/C for cab comfort, engine preheat, battery management
    Blue tractor with red harrow in field positions Webasto as system partner for agricultural vehicles, highlighting thermal systems and electrification solutions. Webasto Vehicle Solutions – Agricultural Tractor Illustration
  • Construction machinery

    Webasto system partner for heating, air-conditioning and HV battery systems for construction machinery, maximizing uptime, cabin comfort and electrification
    Mobile crane at bridge construction showcasing Webasto climate and thermal management systems for heavy commercial vehicles, demonstrating integrated solutions. Webasto Commercial Vehicle HVAC & Thermal Systems – Crane Truck
  • Marine

    Webasto system partner for marine heating, A/C and roof systems for boats & yachts — HVAC solutions for reliable thermal comfort & efficiency
    White-hulled sailboat with teak deck on turquoise sea exemplifying Webasto's marine vehicle solutions and system partnership in electrification. Webasto Marine Solutions Aerial View of Luxury Sailing Yacht
  • Defense

    Thermal management for defense vehicles and shelters — Webasto as system partner delivering heating, modular cooling and filtration for readiness
    Webasto vehicle solutions for defense showcasing integrated thermal management and containerized climate systems for armored vehicles and mobile shelters. Webasto Military Vehicle Thermal Management and Shelter Solutions