A good generator is quiet and reliable ... Some may not operate efficiently on high-ethanol fuels. Propane/natural gas: Many dual fuel generators and home back-up generators run on propane.

The generator’s weight, to the nearest pound, when fully fueled. (Propane tanks are separate, and natural-gas models are fueled externally.) Weight for stationary models, which stay where ...

Running the generator with propane or natural gas will reduce its volume a bit, though it only hits a relatively quiet 74 decibels when running at load on gas, which is roughly the same volume as ...

When shopping for a tri-fuel generator, consider criteria such as power output, fuel efficiency, portability, starting ease, ...

The generator’s weight, to the nearest pound, when fully fueled. (Propane tanks are separate, and natural-gas models are fueled externally.) Weight for stationary models, which stay where ...