Auxillary Power Unit

Auxiliary Power Unit


The ESI-built APU-B is a portable diesel engine generator set with a heat exchanger system. The heat exchanger system transfers heat through coolant to another circuit such as a truck engine. The secondary coolant circuit has integrated quick disconnects and a circulation pump to maintain coolant flow. In addition to providing heat, the unit also provides AC power for auxiliary use.

This auxiliary power unit is designed for outdoor use and has been tested in extreme arctic conditions.

Features & benefits

  • Powerful Kubota Z482 engine outputs 6 kW of continuous power
  • High quality Mecce Alte generator
  • Provides both 37,000 BTU/hr heat and AC power for auxiliary use
  • Prevents needless wear on your truck engine and reduces fuel costs
  • 13 gal secondary fluid containment


Engine Kubota Z482
Generator Mecc Alte
Engine continuous power 6 kW
Voltage 120/240V
Auxillary power 6 kW @ 60 hz
Heat output
Max from coolant 37,000 BTU/hr
Electric heat power 6 kW
Fuel consumption 0.78 gph – full load 6 kW0.44 gph – no load
Fuel type ULSD
Fuel storage External tank13 gal secondary containment
Weight & dimensions
Weight 507 lb
Dimensions Please contact salesperson for dimensions.

Model #






Highlight Specs

Continuous Three-Phase Output (KVA): 6
Output Phase: 1Ø
Rated Speed (60hz): 3600 RPM
Engine: Kubota Z482
Emission Certification: EPA Tier 4
Configuration: Packaged Enclosure