This top-of-the-line 115V AC power air conditioner features a non-ozone depleting refrigerant, overload protector, three blower speeds, water seal gasket and plug-in controls to prevent any miscellaneous wiring. The sturdy metal construction and six foam mounting pads allow for this unit to have a quieter operation as compared to other A/C units on the market. Plus, this unit has a higher cooling efficiency than other units used in today's RVs.