A Sub-Zero refrigerator costs as much as it does because it contains two compressors instead of one, has tighter seals than other refrigerators, has an integrated design option, uses a patented air filtration system and has a microprocessor control system. As of 2015, a Sub-Zero refrigerator costs $7,500 or more.
Sub-Zero refrigerators are known for their high-quality and innovative design as well as advanced technology. Sub-Zero refrigerators are also taller than most other refrigerators, which can add design appeal. The significant cost of a Sub-Zero refrigerator also goes along with its respected name in the high-end appliance industry. Sub-Zero is likely the most well-known brand of luxury refrigerators.