Guardian QuietSource 16,000 Watt Standby Generator 5243 (Discontinued by Manufacturer) 16,000-watt (LPG) / 15,000-watt (NG) generator can run 5-ton A/C unit or two 4-ton A/C units with 16 circuits of extra coverage Powered by 992 cc 30 HP Overhead Valve Industrial engine Whisper-Test technology reduces exterior noise to minimum Pre-packaged and pre-wired for easy installation Non-CARB Compliant/Not For Sale In California