I reduced my annual idle time by over 70% with AUTOTHERM!! I have been a Mobile Maintenance Mechanic for Chicago International /IdeaLease, formerly Freund International/IdeaLease, in Huntley, Illinois for 5 years. In October 2003 I had an AUTOTHERM -2100 Energy Recovery System installed in my International 6 cylinder, 230 horsepower, 800 RPM Mobile Service vehicle. … Continue reading I would recommend this product to anyone who is in an industry that requires their vehicles to idle unnecessarily for any length of time.