Phillips & Temro Industries, a portfolio company of Audax Group, has completed the acquisition of Idle Free Systems, Inc., which is headquartered in Madison, Wisconsin, and provides idle-elimination auxiliary power unit (APU) solutions for over-the-road, day cab, and work truck markets.

The acquisition of Idle Free Systems expands PTI’s presence in both thermal systems and driver comfort.

Butch Sumpter, CEO of PTI, said, “This acquisition is an outstanding fit for PTI. Idle Free Systems is a highly innovative provider of complete, year-round idle elimination solutions for heavy duty and work trucks. We look forward to working with the Idle Free Systems team to create further value for our customers.”

Robert Hopton, CEO of Idle Free Systems, said, “This is an exciting development for our employees and customers. PTI’s engineering and technical resources as well as the global reach will enable us to continue to grow the company. I look forward to working with Butch Sumpter and the broader PTI team.”