Many fresh foods emit ethylene gas, a natural compound that hastens spoilage. Sub-Zero's refrigerators come with an anti-microbial air purification system (based on technology developed by NASA) that scrubs the air of ethylene, as well as mold, viruses and bacteria, every 20 minutes.

Sub-Zero’s microprocessor controls the interior temperature to within one degree of its setpoint. An advanced air seal around all four sides of the door prevents leaks while conserving energy.

The Sub-Zero designer series is created to be modular. Multiple units may be configured in any combination to create exactly the kitchen you envision.