Sub-Zero 4204490 Water Filter & 7042798 Air Purification Cartridge Combo Pack

Keep your compatible Sub-Zero refrigerator's water filtration and air purification systems maintained with the Sub-Zero 4204490 Water Filter and 7042798 Air Purification Cartridge Combo Pack. This convenient replacement set includes one refrigerator water filter and one air purification cartridge, helping you replace both components in a single order. The 4204490 water filter helps reduce chlorine taste and odor and filters particulates from water, while the 7042798 air purification cartridge works with the refrigerator's built-in air purification system to help manage ethylene gas and odors. Designed for compatible Sub-Zero Classic, Designer, and selected PRO refrigerators, this combo pack offers a practical way to plan routine filter maintenance. Before ordering, confirm that your refrigerator uses both part numbers to help ensure the correct fit.

Product Details

• Brand: Sub-Zero
• Product Type: Refrigerator water filter and air purification cartridge combo pack
• Water Filter Part Number: 4204490
• Air Purification Cartridge Part Number: 7042798
• Quantity: 2 cartridges total
• Water Filter Function: Helps reduce chlorine taste and odor and filters particulates
• Air Cartridge Function: Helps manage ethylene gas and odors inside compatible refrigerators
• Water Filter Replacement Interval: Up to one year, depending on usage and the manufacturer's guidance
• Air Cartridge Replacement Interval: Approximately 12 months, following the appliance's instructions
• Compatible Appliances: Selected Sub-Zero Classic, Designer, and PRO refrigerators that use both cartridges

Key Features

Two Essential Replacement Cartridges in One Pack

This Sub-Zero refrigerator filter combo pack includes the 4204490 water filter and the 7042798 air purification cartridge. Ordering both together can simplify maintenance planning and help you avoid placing separate orders when both components are due for replacement.

Water Filtration for Better-Tasting Water

The Sub-Zero 4204490 water filter helps reduce chlorine taste and odor and filters particulates. The manufacturer's performance documentation also identifies additional contaminant reductions under specified test conditions. Refer to the official performance data for the complete list of substances and applicable reduction claims.

Air Purification for a Fresher Refrigerator Environment

The Sub-Zero 7042798 air purification cartridge works with the refrigerator's built-in system to help remove ethylene gas and odors from the refrigerator air. Ethylene is naturally released by many fruits and vegetables and can influence ripening. This system supports the refrigerator's food-storage environment but does not replace proper food handling or cleaning.

Convenient Routine Maintenance

Replacing the water filter and air purification cartridge according to the manufacturer's schedule helps maintain the intended operation of both systems. The water filter may last up to one year, while the air cartridge is generally replaced approximately annually. Actual replacement timing should follow the appliance's indicator and model-specific instructions.

Manufacturer-Specified Replacement Parts

The 4204490 and 7042798 are Sub-Zero part numbers for their respective filtration components. If you are purchasing this set as a genuine OEM combo pack, confirm the authenticity of both cartridges through your supplier documentation.

Compatibility

This combo pack is intended only for refrigerators that require both the 4204490 water filter and the 7042798 air purification cartridge.

The 4204490 water filter is listed for compatible Classic (BI, CL), Designer (IT, IC, DEC, DET), and PRO (648PRO, PRO3650, PRO4850) refrigeration models. The 7042798 air cartridge fits Sub-Zero refrigerators equipped with the corresponding air purification system.

Before ordering: Check the part numbers printed on both cartridges currently installed in your refrigerator, or consult the model and serial number through Sub-Zero's official filter guidance. Not every Sub-Zero refrigerator has an air purification system, and a compatible water filter alone does not confirm that the combo pack is suitable.

Water Filter Part Number: 4204490
Air Purification Cartridge Part Number: 7042798
Previous Air Cartridge Part Number: 7007067

Installation and Maintenance

1. Confirm that both replacement part numbers match your refrigerator.
2. Replace the water filter according to the appliance's instructions, including any required flushing procedure.
3. Install the air purification cartridge in its designated compartment using the model-specific instructions.
4. Reset the relevant filter indicator if your refrigerator requires it.
5. Record the replacement date and follow the manufacturer's recommended maintenance schedule.

Consult your Sub-Zero use and care guide for the correct installation and indicator-reset procedures.