Thermo King has added ‘Closed Loop Cooling’ to the list of available options for its TriPac Hybrid Auxiliary Idle Reduction and Temperature Control System (APU). The new option offers reduced installation complexity and emergency tractor alternator backup. The TriPac runs independently of the tractor’s cooling system.

For drivers who frequently operate in warm climates – above 32 F — or simply prefer that the TriPac system not tie into the truck engine’s coolant, the system will still provide battery charging and cab comfort they want. Its emergency alternator backup means the it can supply voltage for temporary operation of the truck in case of charging system failure. Closed Loop Cooling can be ordered with the TriPac system or as an aftermarket option from Thermo King dealers.