The DuroMax XP12000HX Generator is known as the beast model of the HX series as it has 12,000 watts of power. Providing the power in a more affordable, portable package, this unit is the best choice over any stationary home standby generator. This generator is perfect for home backup as it is able to power lights, appliances, and central A/C systems with its 460cc OHV engine. With the capability to run on either gasoline or liquid propane, this unit gives users freedom to choose. Equipped with CO alert, this feature keeps your family safe from harmful engine fumes by automatically shutting off if it detects unsafe levels of carbon monoxide. A digital command center is also included that will track voltage output, operating frequency, and maintenance hours. With a push button start feature, this generator is as easy as starting your vehicle. Complying with emission standards of the Environmental Protection Agency (EPA) and California Air Resources Board (CARB), this Duromax XP11500EH generator is safe for users and the environment.