Sub Zero 7042798 Air Purification Cartridge

Refrigerators hold onto more than cold air. Bacteria, mold spores, and the ethylene gas given off by ripening produce all build up in that closed space over time. The Sub Zero 7042798 Air Purification Cartridge is the part responsible for keeping that air in check.

Same Trusted Part, Updated Number

Sub-Zero updated this cartridge's part number from 7007067 to 7042798, and it fits the exact same housing without any change to installation. If your fridge previously used the older number, this is the correct part going forward.

Air That Keeps Working, Around the Clock

The cartridge draws on microbiological purification technology to cycle the air inside your refrigerator roughly every 20 minutes. That constant turnover is what separates it from a passive filter. Instead of waiting for air to pass through once, it keeps working on the same air repeatedly throughout the day.

Where You'll Notice the Difference

Produce tends to hold its texture and color longer in a fridge with a fresh cartridge in place, since less ethylene gas means slower ripening across the whole drawer. Odors from strong foods also stay more contained rather than drifting into everything else on the shelf.

Knowing When to Replace It

A sub zero air purification cartridge replacement is generally due once a year. Performance fades gradually rather than stopping all at once, so there's rarely an obvious signal that it needs changing. Marking a date on the calendar when you install a new one is the most reliable way to stay on schedule.

Installing the New Cartridge

No tools or service call are needed. Locate the housing inside the refrigerator cabinet, remove the spent cartridge, and press the new Sub Zero 7042798 Air Purification Cartridge into place until it clicks.

Specifications