Inverter Firsts: EXELTECH was first in the market with true sine wave inverter, back when all the competition offered was "quasi-sine wave inverters". Now that most of them offer "true sine wave inverters" we ask you to compare performance and price to other inverters. Inverter Innovation: EXELTECH offers the best regulated AC power inverter available from any source, inverter, generator and public utility included. You can not buy cleaner power anywhere. Inverter Infinitum: EXELTECH offers more production models than any other inverter manufacturer, almost as many as all of the other inverter manufacturers combined. With over 30,000 inverter models available, if we can't solve your power inverter problem, no one can. Mission: EXELTECH was founded in 1990, based on the philosophy that efficiencies in the inverter manufacturing process through product design, coordinated with facility layout, was paramount to productivity and the key to a quality inverter product. Our mission is to provide leadership inverters and superior customer service through the merging of innovative designs with advanced manufacturing technology. Our UL File Number is E161630 Note: To schedule technical support for your after hours maintenance window, please click here.  When contacting us, please give your Company Name, Contact Name, Phone Number, Type of Maintenance, and Time of Maintenance