Fuel-TypeMost outdoor gas grills are fueled by propane (i.e., liquified petroleum gas [LPG]). It’s also possible to run gas grills on natural gas, too, if that is available in your area. In many cases, it’s possible to convert propane grills to burn natural gas using a kit available from the manufacturer. The size of a grill’s cooking surface, measured in square inches, determines how much food you can cook at once. In terms of maximum temperature, most gas grills to reach between 500- and 700-degrees F.Advanced FeaturesSome grills offer extra features to help you make the most of your grill.