Membership maintenance. Performed full system inspection. Unable to flush drain line due to glued clean out. Checked all wiring. Blower wheel is heavily impacted with biological growth. Biological growth also found on evaporator coil/plastics and wiring to motor. Evaporator coil is eroding/rusting due to salt water in the air. Rust buildup beginning to clog drain pan. Condensing unit is also corroded/rusted. Took compressor and outdoor fan motor amp draw. Tested capacitor. Temperature split low 10°. Checked refrigerant pressures and temperatures. Major efficiency loss due to dirty fan and coil. Spoke to the customer about these recommendations for cleanings. Performed and clean on blower motor assembly. Evaporator coil. Vacuum drain line and clean out T. Installed pure air XUV light to prevent bio-growth from coming back.