The Firman H03652 generator features 4550 starting Watts and 3650 running watts (4100/3300 LPG). Power is supplied by our Max Pro Series 208cc FIRMAN engine which runs cool and efficient thanks to its Phoenix Fat Head Block. Our Whisper Series muffler keeps the H03652 running at a quiet 67 decibels well below the standards set by the National Parks Service, and our spark arrester has been approved by the USDA Forest Service