Sub Zero 7042798 Air Cartridge and 4204490 water Filter Combo Pack

The 7042798 is the current production part number for the Sub-Zero air purification cartridge, directly replacing the older 7007067 code. Both fit the same refrigerators and perform identically. This combo pack pairs the updated 7042798 with the 4204490 water filter for Sub-Zero owners who want to cover both water quality and interior air quality in a single order. The 4204490 handles drinking water and ice at the dispenser. The 7042798 handles microbiological purification inside the compartment, scrubbing the air of mold, viruses, bacteria, and ethylene gas using a system based on NASA-developed technology.

What Is Included in This Combo Pack

4204490 Water Filter: The water filtration component for Sub-Zero Classic BI and CL series, Designer IT, IC, DEC, and DET series, and Pro 648PRO, PRO3650, and PRO4850 refrigerators. NSF 42 certified, reducing chlorine taste and odor, sediment, and heavy metals through activated carbon block filtration. Rated for 12 months or 750 gallons.

7042798 Air Purification Cartridge: The current production part number, directly replacing the older 7007067. Both are the same unit and fit the same refrigerators. Uses advanced technology to remove contaminants too small for standard filters, including mold, bacteria, and viruses, and reduces ethylene gas that accelerates food spoilage. Recommended replacement every 6 months.

Why Choose the Sub-Zero 4204490 and 7042798 Combo Pack

This combo pack suits Sub-Zero owners whose refrigerators use the current 7042798 part number rather than the older 7007067 code, and who want to cover both water and air filtration in a single order. Here is what each component specifically handles:

4204490 Water Filter:

• Chlorine taste and odor
• Sediment, rust, and particulates
• Heavy metals including lead and mercury
• Scale formation inhibition in dispenser lines
• Chloramines

7042798 Air Purification Cartridge:

• Mold, viruses, and bacteria, contaminants too small for conventional filters
• Ethylene gas that causes produce to ripen and spoil faster
• Food odors from strong-smelling items like onions, garlic, and fish
• Interior air scrubbing every 20 minutes through the microbiological purification system

Combo Pack Specifications

4204490 Water Filter:

• Certification: NSF 42, ANSI certified
• Filter Capacity: Up to 750 gallons
• Filter Life: Up to 12 months
• Flow Rate: 0.66 to 0.78 GPM
• Operating Temperature: 33 to 100 degrees Fahrenheit
• Working Pressure: 35 to 120 PSI
• Dimensions: 11.5 inches L x 2.13 inches diameter
• Installation Type: Grille-mount, quarter-turn twist-and-lock, tool-free
• Brand: Sub Zero

7042798 Air Purification Cartridge:

• Part Number: 7042798, replaces 7007067
• Color: Black
• Weight: 7.68 ounces
• Dimensions: 2.5 x 3.5 x 4.5 inches
• Replacement Interval: Every 6 months
• Installation Type: Snap-in, tool-free
• Air Scrubbing Cycle: Every 20 minutes
• Technology Base: NASA-developed microbiological purification system
• Brand: Sub Zero

Installation Guide for Both Components

Both components install without tools.

4204490 Water Filter:

1. Lift the grille assembly at the top right of the refrigerator
2. Twist the old filter a quarter-turn counterclockwise to release it
3. Pull the filter straight out and discard
4. Line up the new filter with the locking tabs aligned to the filter head
5. Push the filter in until it stops and twist a quarter-turn clockwise to lock
6. Discard the first full bucket of ice to flush air from the water line
7. Reset the electronic monitoring system per the refrigerator user guide

7042798 Air Purification Cartridge:

1. Locate the air purification compartment inside the refrigerator
2. Grasp the bottom of the cover and rotate upward to open
3. Pull the old cartridge straight out and discard
4. Insert the new 7042798 cartridge securely into the compartment
5. Press and hold the Pure Air button on the dispenser control panel for 5 seconds to reset the flashing indicator

When to Replace Both Components

4204490 Water Filter:

• Every 12 months or 750 gallons, whichever comes first
• Water picks up a faint chlorine taste or odor
• Dispenser flow drops noticeably below normal
• Electronic monitoring system signals a replacement

7042798 Air Purification Cartridge:

• Every 6 months regardless of usage
• Food odors become noticeable between grocery trips
• Produce spoils faster than expected
• Pure Air indicator activates on the refrigerator control panel

Key Benefits

• 7042798 is the current production part number, directly replacing the older 7007067 on the same refrigerators
• NASA-developed microbiological purification system scrubs interior air every 20 minutes
• Targets mold, viruses, and bacteria too small for conventional filters
• Compatible with Sub-Zero Classic BI, Designer IT, IC, ID-30RP, and ID-36RP, and PRO3650 and PRO4850 series
• Both components install without tools in under two minutes each
• Pure Air button 5 second reset required after 7042798 installation

FAQs

Is the 7042798 the same as the 7007067 air purification cartridge?

Yes. The old part number was 7007067 and the new part number is 7042798. They are the same unit and will fit the same refrigerators. Sub-Zero updated the part number during production. Either code can be used to confirm compatibility with the specific refrigerator model.

Do all Sub-Zero refrigerators have an air purification system?

No. Only Classic series BI, Designer IC, IT, ID-30RP, and ID-36RP series, and PRO3650 and PRO4850 units have air purification systems. Designer Drawer models ID-30R and ID-36R do not have air purification systems and one cannot be added. Confirm the refrigerator has an air purification slot before ordering this combo pack.

Why is there carbon dust on the outside of the 7042798 cartridge?

Carbon dust on the exterior is a normal result of the shipping process. It does not affect the performance of the unit and can be wiped away with a paper towel before installation. An audible rattle from the cartridge is also normal.

How do I reset the Pure Air indicator after installing the 7042798?

After installing the new air purifier, press and hold the Pure Air button on the refrigerator control panel for 5 seconds to reset the flashing icon. Skipping this step leaves the indicator active even after a successful installation.

Can this combo pack be used in Sub-Zero NGI models?

Yes. The 7042798 is compatible with Sub-Zero BI-Series and NGI models. Always confirm both the water filter code and air cartridge code on the current components before ordering to verify compatibility with the specific unit.