Topics:

• The air purification icon, pure air icon, or air filter icon is missing, shown, flashing, or blinking on display
• How do you turn PURE AIR on or off?
• Does the air purification cartridge eliminate odors in the refrigerator?
• Purchase air filters for Sub-Zero refrigerator
• Reset air filter indicator on Sub-Zero
• How to use or replace air filters

Answer:

Models with an Air Purification System

Classic (BI, CL) Refrigeration, Designer (IT, IC, DET, DEC) Column, Tall, Drawer models ID-30RP and ID-36RP, and Professional Refrigeration models PRO4850 and PRO3650 are the only units that include air purification systems.

• All Freezer units do not feature air purification systems.
• It is not possible to add air purification systems to previous models (600 Series, 700 Series, etc.).
• Wine Storage units do not have air purification systems.

How the Air Purification System Works

Many fresh foods emit ethylene gas, a naturally occurring compound that hastens food ripening and spoilage. Sub-Zero refrigerators come with an air purification system (based on technology developed by NASA) that scrubs the air of ethylene and odor every 20 minutes.

• If the air purification system is turned off, the fan will not run.
• The air purifier is intended to greatly reduce, not necessarily completely kill bacteria. We have not done testing specifically with the coronavirus so cannot state the air purification would reduce or eliminate the coronavirus.
• Odor Inside a Refrigerator

How to Use the Air Purification System

Depending on model, the air purification system is activated through the settings menu, or by pressing the "PURE AIR" key on the unit control panel.

Icon Information

The air purification icon looks similar to a sheet of paper with three wavy lines going through it.

• If the icon is not present, the air purification system is turned off.
• If the icon is present and not flashing, the air purification system is turned on.
• If the icon is present and flashing, the air purification cartridge needs to be replaced.
• The example below is showing what the pure air icon looks like. The location of the icon will vary depending on the model.
  • The image below is of a Classic (BI) Product.
  • For other products, refer to the model specific replacement soltuions below.

Filter Replacement

Using the air filter is not required. No harm will be done to the Sub-Zero unit if the air filter is not replaced or not used.

• The icon flashes signaling to replace the cartridge after about 365 days or if the cartridge bulb burns out.
• Note that in Designer (formerly Integrated) units, the remaining air filter life is indicated with a percentage. 100% is full filter life, which falls to 0% as the filter is used.

Purchase Air Filters

• To purchase replacement air purification cartridges, visit the Sub-Zero Accessory Store website or call the Factory Certified Parts Distributor in your area.
  • The product serial number is required to select the right replacement filter for your product. Use Sub-Zero Serial Tag Locations for help finding the serial number.
• Refer to How to Purchase Sub-Zero Air Filters for further information on air filter part number and purchasing.

Replacement Instructions

• Classic Series (CL) Reset Air Filter
• Classic Series (BI) Air Filter Replacement
• Designer Series Air Filter Replacement
• PRO Series Air Filter Replacement
• Sub-Zero Air Purification Filter Replacement

Reset Indicator Instructions

• Sub-Zero Pure Air Icon Flashing
•  Sub-Zero Group Owner's App Water or Air Filter Life should automatically reset within a few hours of changing the filter.