More than 20 years ago, our company's founder, Eldon Willis, developed the concept for one of the trucking industry's first auxiliary power units. His vision came from a unique perspective. For years, Eldon had served as a charter jet pilot, airplane mechanic and truck owner-operator. He observed how auxiliary power units made planes comfortable for passengers and crew on the ground and in the air. He also experienced first hand just how miserable the wilting heat of summer or the bone-chilling cold of winter can make the cab and sleeper for a truck driver. He believed the same APU technology that served the aviation industry for years offered a solution. His vision was to adapt that technology for use in Class 8 trucks and make the truck environment more comfortable for drivers.

Eldon turned that vision into reality in 1985 when he developed the first prototype for a fully-integrated APU for the Class 8 truck and installed it in his 1982 Peterbilt 359. Eldon continued fine-tuning that prototype in his spare time. Several companies agreed to beta test the APU in their trucks. Eldon continued perfecting it in his spare time, taking what he learned from the beta test units and his own experiences, until in 2001, he came up with the first Willis APU and founded Auxiliary Power Dynamics to manufacture and market the units.

Our company's mission is to build upon Eldon's vision and adapt the Willis APU with these objectives in mind:

• Make your truck's cab and sleeper environment as comfortable as possible so that you can be more productive.
• Help you avoid any unnecessary idling of your truck's main engine, thus extending your truck engine's life and significantly reducing your fuel and maintenance expenses.
• Reduce the amount of greenhouse gases your truck engine would otherwise release into the atmosphere, contributing not only to greater environmental compliance in the trucking industry, but also, more importantly, cleaner air.
• Use the same quality components in building the Willis APU that you can find under the hood of your truck. After all, if pilots expect high quality components in their airplanes, why should you settle for anything less?
• Equip the Willis APU with standard and optional features than can improve your truck's safety, efficiency and dependability.
• Continually test and refine the Willis APU to ensure that it meets and surpasses new environmental standards and customer expectations and that it becomes a new benchmark for quality products in the trucking industry.