Reviews for Sub Zero brand refrigerators can be found on websites operated by Good Housekeeping and Consumer Affairs. The reviews at Good Housekeeping come from the Good Housekeeping Research Institute, whereas the reviews at Consumer Affairs are penned by past and present owners.
The people at Good Housekeeping review specific models of Sub Zero refrigerators, giving at least one of them a rating of "B." The review states that the controls were easy to use but the temperatures weren't even. The model reviewed also lacked an ice maker.
The ratings at Consumer Affairs are sorted by manufacturer with the reviews for all Sub Zero refrigerators lumped together. Individual ratings vary greatly by model number and personal experience but can give shoppers insight if specific models are mentioned regularly.