Diesel school bus heater kit for cold-weather readiness
Keep school buses reliable, comfortable, and ready for winter routes with a powerful diesel coolant heater kit designed for cold-weather operation. This Webasto 12V diesel coolant heater delivers up to 31,000 BTU (9.1 kW), includes SmarTemp 3.0 BT control, and is available with or without an enclosure box.
Benefits & Use Cases
The Webasto Thermo Pro 90 supports engine-off pre-conditioning, supplemental interior heat, and cold-start protection for buses and fleet vehicles operating in demanding climates.
Choose the standard kit for compact installation without an enclosure box, or select the enclosure box option for added mounting protection in exposed or fleet-focused installs.
- Helps pre-heat the engine coolant before cold morning routes
- Supports idle reduction, fuel savings, and accelerated defrost
- Arctic Start function helps deliver quick pre-heat in extreme cold
- Quiet, efficient operation with automatic altitude adjustment up to 11,000 ft (3,350 m)
Technical Specifications
- Fuel Type: Diesel, Diesel 1, Diesel 2, Arctic, JP8, Biodiesel (PME)
- Voltage: 12V
- Heat Output: 6,100–26,000 BTU/h control range; 31,000 BTU/h boost (1.8–7.6 kW control range; 9.1 kW boost)
- Fuel Consumption: 0.05–0.23 gal/h control range; 0.29 gal/h boost (0.2–0.9 l/h control range; 1.1 l/h boost)
- Power Consumption: 37–83 W; 90 W boost
- Max Altitude: 11,000 ft (3,350 m)
- Operating Temperature Range: -40 to 176°F (-40 to +80°C)
- Warranty: 2 Years
- Dimensions (Heater body only): 15 × 5.5 × 9.13 in (381 × 140 × 232 mm)
- Weight: 10.8 lb (4.9 kg)
- Part Numbers: 5013917C without enclosure box; 5013918A with enclosure box
- Included Controller: SmarTemp Control 3.0 Bluetooth, controller part number 5013873
Compatibility
- School buses and shuttle buses of all sizes
- Commercial trucks, light-duty trucks, and fleet vehicles
- Airport, agriculture, material handling, and off-highway vehicles
- Specialty, recreational, marine, and cold-climate vehicle applications
Kit Includes
- Thermo Pro 90 D 12V heater
- Mounting bracket
- Clamp hose 9.5–10.5 mm, 9 mm band ZP
- Fuel line
- Harness fuel pump DP42 TP90 5 m
- Tube flex SS 38 mm × 1 m with end cap
- Fuel filter
- Fuel hose 4.5 × 10.5
- Extension exhaust Ø38.1 × 178 mm
- Standpipe 4.76 × 828, 0.25 in. NPT fit
- Exhaust clamp
- Wiring harness power and switch
- Install hardware bag
- Thermo Pro 90 literature pack
- SmarTemp Control 3.0 Bluetooth
- Formed hose
- Elbow 0.75 × 0.75 copper
- Reducer elbow 1–0.75 in.
- Enclosure box included with option 5013918A only
FAQs
What is the difference between 5013917C and 5013918A?
Part number 5013917C is the Webasto Thermo Pro 90 school bus heater kit without an enclosure box. Part number 5013918A includes the enclosure box for installations that need added mounting protection.
Is this Webasto Thermo Pro 90 kit suitable for school buses?
Yes, this 12V diesel coolant heater is designed for school and shuttle buses, including applications that need engine pre-heating, supplemental interior heat, and cold-start support.
What does the SmarTemp 3.0 BT controller do?
The SmarTemp 3.0 BT controller supports programmable run times, low-voltage disconnect adjustment, maintenance reminders, and heater fault code display.
Can this heater operate at high altitude?
Yes, the Scholastic Pro 90 supports automatic altitude adjustment up to 11,000 ft (3,350 m), making it suitable for many mountain and winter-route applications.
How much diesel does the Thermo Pro 90 use?
Fuel consumption ranges from 0.05–0.23 gal/h (0.2–0.9 l/h), with boost operation up to 0.29 gal/h (1.1 l/h), depending on heat demand and operating conditions.
How should I maintain a Webasto coolant heater?
Routine seasonal checks help keep the heater reliable through winter route use and fleet operation.
Technical Specifications of the Webasto Thermo Pro 90 Diesel School Bus Heater Kit with SmarTemp 3.0 BT controller
- Fuel:
- Diesel
- Voltage:
- 12V
- Max. Heat Output:
- 31,050 BTU (9.1 kW)
- Heater model:
- Thermo Pro 90
- Max. Altitude:
- 11,000 ft (3,350 m)
Included in the kit:
Diesel school bus heater kit for cold-weather readiness
Keep school buses reliable, comfortable, and ready for winter routes with a powerful diesel coolant heater kit designed for cold-weather operation. This Webasto 12V diesel coolant heater delivers up to 31,000 BTU (9.1 kW), includes SmarTemp 3.0 BT control, and is available with or without an enclosure box.
Benefits & Use Cases
The Webasto Thermo Pro 90 supports engine-off pre-conditioning, supplemental interior heat, and cold-start protection for buses and fleet vehicles operating in demanding climates.
Choose the standard kit for compact installation without an enclosure box, or select the enclosure box option for added mounting protection in exposed or fleet-focused installs.
- Helps pre-heat the engine coolant before cold morning routes
- Supports idle reduction, fuel savings, and accelerated defrost
- Arctic Start function helps deliver quick pre-heat in extreme cold
- Quiet, efficient operation with automatic altitude adjustment up to 11,000 ft (3,350 m)
Technical Specifications
- Fuel Type: Diesel, Diesel 1, Diesel 2, Arctic, JP8, Biodiesel (PME)
- Voltage: 12V
- Heat Output: 6,100–26,000 BTU/h control range; 31,000 BTU/h boost (1.8–7.6 kW control range; 9.1 kW boost)
- Fuel Consumption: 0.05–0.23 gal/h control range; 0.29 gal/h boost (0.2–0.9 l/h control range; 1.1 l/h boost)
- Power Consumption: 37–83 W; 90 W boost
- Max Altitude: 11,000 ft (3,350 m)
- Operating Temperature Range: -40 to 176°F (-40 to +80°C)
- Warranty: 2 Years
- Dimensions (Heater body only): 15 × 5.5 × 9.13 in (381 × 140 × 232 mm)
- Weight: 10.8 lb (4.9 kg)
- Part Numbers: 5013917C without enclosure box; 5013918A with enclosure box
- Included Controller: SmarTemp Control 3.0 Bluetooth, controller part number 5013873
Compatibility
- School buses and shuttle buses of all sizes
- Commercial trucks, light-duty trucks, and fleet vehicles
- Airport, agriculture, material handling, and off-highway vehicles
- Specialty, recreational, marine, and cold-climate vehicle applications
Kit Includes
- Thermo Pro 90 D 12V heater
- Mounting bracket
- Clamp hose 9.5–10.5 mm, 9 mm band ZP
- Fuel line
- Harness fuel pump DP42 TP90 5 m
- Tube flex SS 38 mm × 1 m with end cap
- Fuel filter
- Fuel hose 4.5 × 10.5
- Extension exhaust Ø38.1 × 178 mm
- Standpipe 4.76 × 828, 0.25 in. NPT fit
- Exhaust clamp
- Wiring harness power and switch
- Install hardware bag
- Thermo Pro 90 literature pack
- SmarTemp Control 3.0 Bluetooth
- Formed hose
- Elbow 0.75 × 0.75 copper
- Reducer elbow 1–0.75 in.
- Enclosure box included with option 5013918A only
FAQs
What is the difference between 5013917C and 5013918A?
Part number 5013917C is the Webasto Thermo Pro 90 school bus heater kit without an enclosure box. Part number 5013918A includes the enclosure box for installations that need added mounting protection.
Is this Webasto Thermo Pro 90 kit suitable for school buses?
Yes, this 12V diesel coolant heater is designed for school and shuttle buses, including applications that need engine pre-heating, supplemental interior heat, and cold-start support.
What does the SmarTemp 3.0 BT controller do?
The SmarTemp 3.0 BT controller supports programmable run times, low-voltage disconnect adjustment, maintenance reminders, and heater fault code display.
Can this heater operate at high altitude?
Yes, the Scholastic Pro 90 supports automatic altitude adjustment up to 11,000 ft (3,350 m), making it suitable for many mountain and winter-route applications.
How much diesel does the Thermo Pro 90 use?
Fuel consumption ranges from 0.05–0.23 gal/h (0.2–0.9 l/h), with boost operation up to 0.29 gal/h (1.1 l/h), depending on heat demand and operating conditions.
How should I maintain a Webasto coolant heater?
Routine seasonal checks help keep the heater reliable through winter route use and fleet operation.
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact [email protected] if you need help picking the right options or have any questions.
Shipping
- United States - 1-5 Working Days
- United Kingdom - 2-5 Working Days
- European Union - 2-7 Working Days
- Australia / New Zealand - 5-14 Working Days
- Rest of World - 5-14 Working Days
There may be a delay if the order is shipped to a PO or parcel shop address. Please note, some couriers do not offer shipping to PO boxes.
View full shipping & Delivery information
Returns
You can return or exchange goods within 14 days from the date of purchase if the item is unused and brand new in unopened packaging. You must contact us before returning any goods, though. Additional deductions might be applied as indicated in the Returns section of our Terms and Conditions.
Warranty Information
Most heaters come with 2 year warranty + optional 1 year extended Warranty available
- Parts - 1 Year Warranty
- Refrigerators - 2 Year Warranty
- AC Systems - 1 Year Warranty
- Heavy duty heating equipment (10 kW+) - 1 Year Warranty
- Other items - 1 Year Warranty
Installation, servicing and maintenance must be done in accordance with manufacturers guidelines. Failure to follow these guidelines will result in voiding your warranty.
We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us.
If you require removing and/or refitting your item, please visit a local professional or authorized specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.
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