Proheat X45 Plus
Powerful & Rugged Auxiliary Coolant Heater for Easy Cold Weather Starts


Proheat X45 Plus is a powerful, diesel-powered engine pre-heating solution for quick and reliable cold weather starting. An integrated pump circulates heated coolant to warm the engine block, making starting easier and reducing start-up engine wear. Proheat X45 Plus features an onboard control panel that displays heater status, while an optional digital timer for the cab adds convenient timer-based starting of the heater. Proheat X45 Plus can also direct heat to the truck cab for driver comfort while reducing fuel costs and emissions from unnecessary engine idling. With more than 20 years in the field, its rugged and field serviceable design has proven reliable in even the most extreme temperatures.


X45 Plus Truck Kit


Dual-Purpose Auxiliary Heater

Proheat X45 Plus is powerful enough to supply heat for both engine and driver needs. Engine pre-heating helps eliminate problems with cold-weather starts, allowing drivers to depart faster. With the addition of an optional heat exchanger, Proheat X45 Plus can heat the sleeper cab for added driver comfort. And its low amperage design is a small draw on the starting battery, ensuring it is not excessively drawn down when the heater is used.

X45 Plus Truck Application


1 Timer (Optional)
2 Heat Exchanger (Optional)
3 Proheat Heater
4 Exhaust
5 Fuel Pick-Up
6 Coolant Return
7 Heated Engine
8 Electrical Connection
9 Warmed Coolant
10 Heated Cab Air


Cut Operating Costs


By installing Proheat X45 Plus, fleets and operators can save thousands of dollars each year by eliminating the need to idle the truck’s engine to prevent engine freezing and to provide heat for driver comfort. Engine idling puts unnecessary hours on the engine, increasing engine wear and overall vehicle emissions. Proheat X45 Plus uses substantially less fuel than an idling truck engine while still keeping both the engine and driver warm.

How many hours do your trucks idle for cab comfort and engine pre-heating in a typical year? Since Proheat X45 Plus burns 90% less fuel than a truck engine, trucks that idle unnecessarily for hundreds of hours will typically pay for a Proheat X45 Plus in about a year. Compare your truck heating needs to the sample fuel and cost savings calculations in Table below.


Fuel Used per Hour Idling Truck Engine 1.0 gallons 3.8 litres
Fuel Used per Hour by Proheat X45 Plus 0.1 gallons 0.4 litres
Fuel Savings per Hour Using Proheat X45 Plus 0.90 gallons 3.4 litres
Heat Required per Year 20 weeks
Heat Required per Week 5 days
Time per Rest Period 8 hours
Total Time per Year Requiring Heat
(Line 4 x Line 5 x Line 6)
800 hours
Yearly Total of Fuel Saved Using Proheat
X45 Plus (Line 3 x Line 7)
720 gallons 2720 litres
Price of Fuel $2.00 $1.00
10  Yearly Total Fuel Costs Saved Using
Proheat X45 Plus (Line 8 x Line 9)




Coolant Heater Features
  • 45,000 BTU (13kW)
  • Electronic controller has flexible control options for more applications
  • Integrated coolant pump
  • Mounting options for
    all truck configurations
  • Two year parts and labor warranty
New Features
  • Next generation PCM controller
  • J1939 CAN bus
  • New operating modes to save battery power and fuel
  • USB2.0 Datalink connection
  • Field programmable controller
Timer Features
  • Timed or manual start of X45 Plus heater from inside the truck cab
  • Easy-to-read digital display
  • Programmable, multi-event 7-day timer
  • Surface-mount design
Two Year Warranty
Proheat X45 Plus 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.