Great for powering ONE 13,500 BTU air conditioners with power to spare for other electrical loads. Longest running, longest life! Patented full pressure lubrication provides instant lubrication to all vital bearings on start-up. Noise is minimized with advanced piston, camshaft and gear technologies. Designed with low oil pressure shutdown and a large automotive style oil filter. Fully enclosed generator provides a smooth and quiet operation. Retrofitable to all 30 Amp service applications. EPA and CARB certified.