Frigette has been a leading mobile air conditioning supplier for 50 years. The Frigette Truck APU is the smallest, most fuel efficient diesel generator in the market today. Features include 12,000 BTU's of A/C, 10,000 BTU's of heating, 60 amps of DC battery charging and 3300 watts of household electrical power. You can have it all! The lightweight, compact and specially designed box can be used as a functional step box and can also go behind the fairings of many trucks too. No inverters required, just plug your electrical household appliance into the 2-duplex sockets provided. Frigette uses only Kubota diesel, liquid cooled engines known for their long life, fuel efficiency and affordable parts. Helps save thousands of dollars annually from wasteful idling practices that are being legislated with fines.