Our average of how long a generator ran, over various loads, on a 250-gallon propane tank for stationary models. The Generac 7224 is part of the Generators test program at Consumer Reports.

The Generac GP5500 5939 is part of the Generators test program at Consumer ... Tanks for propane-powered portables are the 20-lb. size. Stationary models are fueled externally from a fixed propane ...