An integral member company of INPS Group Inc., INPS Environmental Products Inc. (IEP), enhances the decades of rail industry presence of the INPS Group of companies with real-world rail and industrial experience.

Responsible for the first patented locomotive auxiliary power unit (APU), the IEP team also developed the methodology to earn emissions reduction credits from a mobile source. The first of its kind in North America.

Drawing upon the experience of providing heating, air conditioning, and other thermo-dynamic solutions to the construction, military and transport truck industry, including the production of thousands of locomotive APU’s and tens of thousands of truck APU’s, the IEP team, through constant research and development remains committed to the enhancement, refinement and perfection of its locomotive idle reduction, fuel savings and air conditioning technologies.