About WPS
Product Information
Product Support
Cost and Financing
Parts Finder
Contact Us
Dealer Portal
Request A Quote
Willis Power Systems, LLC
2950 N. Martin Springfield, MO 65803
Toll Free: (800) 825-4631
Phone: (417) 831-2520
FAX: (417) 831-0030

Willie Compact APU

Our new compact APU, the Willie™, responds to the need for a smaller, lighter, and more powerful APU that assures compliance with anti-idling laws. It was specifically designed to be an off-the-shelf, affordable compact. Yet it is also so powerful that it is capable of meeting the true comfort needs of all drivers.

Click here to read our specifications sheet and our manuals. Request a quote here or contact sales@willisapu.com.

Willie™ Advantages
  • More Affordable
  • Smaller Size
  • Lower Weight
  • Easier installation with adequate training

Willie™ Performance

  • 30,000 BTU’s of cooling
  • Up to 28,000 BTU’s of heating for the cab and sleeper
  • Electronic controls with programmable features
  • Powerful diesel engine