Sub-Zero Air Purification Cartridge-7042798

The Sub-Zero 7042798 is the air purification cartridge used in Sub-Zero refrigerators with a built-in air purification system. It replaces the older part number 7007067. It's a small cartridge, and it's the only air filter in the unit, so replacing it on schedule keeps your fridge smelling clean and helps slow ethylene-driven spoilage.

• OEM: This is a genuine Sub-Zero part (7042798).

Quick facts

Product Overview

Your Sub-Zero air purification system draws refrigerator air through this cartridge to reduce odors and ethylene gas. Ethylene is released by many fruits and vegetables, and it speeds up ripening and spoilage in nearby produce. Sub-Zero describes the system as scrubbing the air about every 20 minutes using technology based on NASA research.

Over time the cartridge wears out. When it does, odors can linger and the "Change Air Purifier" indicator will appear.

This is an air filter. If you need a water filter, see the Sub-Zero 4204490 refrigerator water filter.

Compatibility: Will This Fit My Refrigerator?

It fits Sub-Zero refrigerators that have an air purification system, including these series:

• Classic Series (BI)

• Designer Series (IT, IC)

• PRO Series

• Next Classic Series (CL)

Not compatible: Sub-Zero models without an air purification system, such as the legacy 648PRO.

Is it the same as 7007067? Yes, for replacement purposes. Sub-Zero lists 7042798 as the direct replacement for 7007067. If your manual or old cartridge says 7007067, this is the current part. We also list the Sub-Zero 7007067 air purification cartridge separately.

Not sure? Look for the Pure Air control or the "Change Air Purifier" message, or open the air filter access door on the inside back wall. Contact us with your model number and we'll confirm the fit before you order.

Product Specifications

Key Features and Benefits

• Targets ethylene and odors. Helps keep produce fresher and fridge air cleaner.

• Direct replacement for 7007067. No guessing which number to order.

• No tools needed. It pops in and out of the housing by hand.

• Easy to stock up. Choose a 2-pack or 3-pack for the coming years.

• Pair it with a water filter. Replace both on the same day. See the Sub-Zero 4204490 and 7042798 combo pack.

What Does This Filter Reduce?

It won't repair a dirty fridge or rescue old food. Clean shelves and good storage habits still matter.

How to Install the Filter

Exact steps vary by series, so check your manual if anything looks different.

1. Find the air filter access door on the inside back wall, usually between the top shelves. Remove a shelf if it blocks the door.

2. Open the cover and pop out the old cartridge.

3. Unpack the new cartridge and insert it with the connector pointing downward. The Sub-Zero logo doesn't need to face out.

4. Close the cover until it clicks.

5. Reset the indicator. On Classic and Designer models, press and hold Pure Air for five seconds. On PRO and Next Classic models, touch Refresh when prompted.

Tip: Reset even if you replaced the cartridge before the light started flashing.

When Should You Replace the Filter?

Replace it about every 12 months, or when the air purification indicator flashes. A steady light is normal. Replace sooner if you notice persistent odors or produce spoiling faster than usual.

Sub-Zero notes that your refrigerator is not damaged if you skip replacement. Replacing on time simply keeps odor and ethylene control working. For the full story, see our guide to the Sub-Zero air purification cartridge.

What's Included?

• 1 Sub-Zero 7042798 air purification cartridge (per pack)

• 2-pack and 3-pack options available

Shipping, Returns and Support

Free shipping in the USA. See our return and refund policy before you order. Questions? Email info@frostwaterfilter.com.

Frequently Asked Questions

What does the Sub-Zero 7042798 replace?
It replaces the older Sub-Zero part number 7007067.

Will it fit my refrigerator?
It fits Sub-Zero refrigerators with an air purification system, including Classic (BI), Designer, PRO, and Next Classic (CL) series. It does not fit models with no air purification system.

How often should I replace it?
About once a year, or when the indicator light flashes.

How do I install it?
Open the air filter access door, pop out the old cartridge, insert the new one with the connector down, and close the cover. Then reset the indicator.

Do I need to reset the indicator?
Yes. On Classic and Designer models, hold Pure Air for five seconds. On PRO and Next Classic models, touch Refresh.

What does it filter?
It reduces ethylene gas and food odors inside the refrigerator.

Is it the same as a water filter?
No. It cleans air only. Browse our Sub-Zero refrigerator water filters for water and ice filters.

Will my fridge still work if I don't replace it?
Yes. Sub-Zero says the unit isn't harmed, but odor and ethylene control will be reduced.