Shop the genuine OEM Sub-Zero air purification cartridge — in stock, with free shipping and free returns. The Sub-Zero 7042798 is the current factory air filter for Sub-Zero refrigerators, replacing the old part number 7007067. Same unit, same fit — just a new number.

Why replace your Sub-Zero air filter?

Based on NASA-developed technology, the Sub-Zero air purification system scrubs the air in your refrigerator every 20 minutes, removing airborne bacteria, mold spores, and the ethylene gas that speeds up food spoilage. A fresh cartridge helps produce and perishables stay fresher, longer. Sub-Zero recommends replacing the cartridge once a year.

The 7042798 fits Classic (BI) series, Designer (IC / IT / ID) series, and other Sub-Zero models equipped with the air purification system. Replacing your water filter at the same time? Save with our water + air filter combo pack.