A:Answer Thank you for reaching out to us, Brooklynboy! Your new, high-efficiency refrigerator may introduce unfamiliar sounds. These sounds normally indicate your refrigerator is operating correctly. Some surfaces on floors, walls, and kitchen cabinets may make these sounds more noticeable. During defrost cycles, water dripping onto the defrost heater may cause a hissing or sizzling sound. After defrosting, a popping sound may occur. However, we would like to gain more insight pertaining to your additional noise concern. At your convenience, please reach out to us at 1-800-374-4432 Monday-Friday 8:30 am-8 pm EST. -Ciara