Jason S Westminster , CA March 27, 2023 Appliance: Whirlpool Refrigerator WRS588FIHZ00 Whirlpool Refrigerator Wrs588fihz00: Air diffuser sounded like a helicopter. How to replace Air Diffuser. Replaced the Air Diffuser according to the AppliancePartsPros.com video. Removed cover. Removed air diffuser screw. Unplugged harness. Revered the process. All good. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes