The Champion Power Equipment Portable Generator is designed w/your safety & convenience in mind. Owning this rugged 12,000-Watt generator means the next time there's an outage the power in your house stays on. For projects the massive 717 cc engine has what it takes to handle the power tools and large equipment you need to get the job done. Electric start with included battery plus Cold Start Technology ensures a quick start in cold weather. CO Shield technology monitors the accumulation of carbon monoxide (CO) If CO Shield detects unsafe elevated levels of CO gas it automatically shuts off the engine. Generators must ALWAYS be used outdoors far away from occupied buildings. Meets the requirements of ANSI/PGMA G300-2018. Intelligauge monitors voltage, frequency & operating hours. At 15,000 starting & 12,000 running watts, this powerful unit can handle it all in an outage - lights sump/well pump, refrigerator, modem/router security system, window AC, furnace blower, fan, microwave and will start and run a central AC with a manual transfer switch (not included) Fill up the 10.8 Gal. tank of gasoline & enjoy up to 9-hours of power at 50% load. This unit has a low oil shut-off sensor and includes 1.5 Qt. of 10-Watt to 30-Watt engine oil so all you'll need to buy is gasoline. EPA certified and CARB compliant. Buy w/confidence - Champion Support & our nationwide network of service centers will back your purchase up with a 3-year limited warranty and free lifetime technical support.