Proheat 30
Powerful & Rugged Auxiliary Coolant Heater Designed for School Buses

Proheat X30 is a powerful, diesel-powered school bus pre-heating solution for quick and reliable cold weather starting. The heater becomes part of the school bus heating system, supplying added heat for passengers while reducing fuel costs and emissions from unnecessary engine idling. An integrated pump circulates heated coolant to warm the engine block, making starting easier while reducing start-up engine wear. Proheat X30 features an onboard control panel that displays heater status, while an optional digital controller for inside the bus adds convenient timer-based starting of the heater. The heater also complies with National Highway Traffic Administration standards to ensure maximum safety for bus passengers. With more than 20 years in the field, its rugged and field serviceable design has proven reliable in even the most extreme temperatures.

Proheat X30 Coolant Heater


Proheat X45 School Bus Heater

1 Engine
2 Proheat X30 Heater
3 Return to Engine
4 Supply from Proheat X30
5 Fan
Proheat Timer
Proheat Function
Controller (PFC)



An optional impact switch automatically shuts the heater off in the vent of a vehicle roll-over.



Coolant Heater Features
  • Modulating Heat Output adapts to outside temperatures to ensure consistent heat under all conditions
  • Closed Loop Combustion Control using integrated O2 Sensor for dependable, smoke free performance
  • Adaptive Smart Controls for optimum system temperature and heater longevity
  • Flexible installation and control options to fit all school bus models
  • Program entire school year on a single PFC or via desktop application and transfer to all buses via USB stick
Proheat Function Controller (PFC)
  • All new design providing timed and manual start options
  • Easy-to-read and set digital display with adjustable backlight
  • Various mounting configurations for ease of installation
  • Program entire school year on a single PFC or via desk top application and transfer to all buses via USB stick
Two Year Warranty
Proheat X30 is backed by a two year parts and labor warranty and is supported by a network of Authorized Proheat Dealers across the United States and Canada. For specific terms, you can access our warranty through this link.



Downloadable Documents