Frigidaire 5300265301 Room Air Conditioner Filter Dryer. This filter dryer (part number 5300265301) is for room air conditioners. Filter dryer 5300265301 filters refrigerant that travels through the sealed-system of the room air conditioner. A service technician should do this repair because it involves recovering and recharging refrigerant in the sealed refrigerant system. FRIGIDAIRE, WHITE-WESTINGHOUSE, KENMORE, GIBSON, KELVINATOR, CARRIER, WESTINGHOUSE, UNIVERSAL/MULTIFLEX (FRIGIDAIRE).