Home and Small Business Standard 5 Year Warranty - Extended Warranty Available -13KW, 17KW and 20KW Air Cooled -25KW, 30KW, 36KW and 40KW Liquid Cooled -ONAN 5.5KW, 6.5KW Prime -Nat Gas/ Propane fuel -Remote monitoring capable -Fully Automatic Operation Call for information or to schedule a site visit.