Briggs & Stratton 40450 10000-watt Home Standby Generator System with 200-Amp Automatic Transfer Switch Includes 200 amp automatic transfer switch with flexible indoor/outdoor installation 10 kW with Symphony II power management can manage a home, up to 4,200 sq. ft. with a 3-Ton air conditioner saving you thousands less than a previously required 20 kW Closer placement options as close as 18 in. from your home per the National Fire Protection Agency 37 standard Comprehensive 5-year parts, labor, and travel limited warranty