The Cummins RS20AC 20kw Quiet Connect Generator is yet another generator in this series that comes with reliable, quiet power. This unit also comes with a transfer switch to make switching from standard power to the generator easier. This generator is strong enough to power a 5-ton AC unit while still being exceptionally quiet.
You can run this unit on LP or Natural gas, just choose when you buy. It is also EPA and CARB certified. The RS20AC also offers exercise modes that help make it even more efficient. You can choose when your generator will run and save power, and the unit will crank the engine without starting it to run self-diagnostics.