Sub-Zero 7042798 Air Purification Cartridge Replacement

Looking for the right replacement air purification cartridge for your Sub-Zero refrigerator? This page helps you identify the correct cartridge for models using the 7042798, 7007067, and other compatible Sub-Zero air filtration systems, so you can stop guessing and get back to fresher food and a cleaner-smelling refrigerator.

Find the Right Sub-Zero Air Purification Cartridge

Not sure which cartridge your Sub-Zero refrigerator needs? Here is a quick comparison to help you identify the correct replacement before ordering.

Always confirm the part number printed on the existing cartridge or inside the refrigerator compartment before ordering. Sub-Zero air cartridge housing designs differ across model generations and are not universally interchangeable.

Compatible Sub-Zero Refrigerator Models

The 7042798 and 7007067 air purification cartridges are compatible with a range of Sub-Zero refrigerator configurations including:

• Sub-Zero BI-36U
• Sub-Zero BI-42S
• Sub-Zero BI-48S
• Sub-Zero PRO 48
• Sub-Zero B136S
• Sub-Zero Classic Series refrigerators
• Sub-Zero Designer Series refrigerators
• Sub-Zero Integrated Series refrigerators
• Sub-Zero Built-in Series refrigerators

Always verify compatibility against your specific refrigerator model number before ordering. This list is representative and not exhaustive across all Sub-Zero configurations.

Why Choose a Sub-Zero Air Purification Cartridge Replacement?

Replacing the air purification cartridge on schedule is one of the simplest ways to keep your Sub-Zero refrigerator performing at its best. Here is what a fresh cartridge delivers:

• Continuously reduces food odors from stored produce, dairy, and leftovers inside the refrigerator compartment
• Targets ethylene gas released by ripening fruits and vegetables that accelerates spoilage in nearby produce
• Reduces flavor cross-contamination between strongly scented and delicate food items stored together
• Activated carbon filtration works at the source rather than simply masking odors
• Tool-free snap-in installation that takes seconds to complete with no specialist knowledge required
• 12 month service life for a straightforward annual replacement schedule aligned with Sub-Zero maintenance recommendations

Sub-Zero 7042798 vs 7007067 Air Purification Cartridge

 

Are the 7042798 and 7007067 the same cartridge?

No. Both use activated carbon filtration to reduce internal refrigerator odors and ethylene gas, but they have distinct housing formats designed for different Sub-Zero model generations. They are not interchangeable.

Which cartridge fits which refrigerator?

The 7042798 fits select newer Sub-Zero refrigerator configurations. The 7007067 fits an earlier generation of Sub-Zero models. The quickest way to confirm which one the refrigerator needs is to check the part number printed on the existing cartridge currently installed in the unit.

How to check the current cartridge part number:

The part number is printed directly on the cartridge itself. The housing is typically located along the upper rear wall inside the fresh food compartment. Remove the existing cartridge and check the label before ordering to avoid a mismatch.

What happens if the wrong cartridge is ordered?

An incorrectly ordered cartridge will not seat properly in the housing and will not deliver effective air filtration. In some cases it may appear to fit but leave gaps at the housing connection that allow unfiltered air to bypass the cartridge entirely. Always order by part number, not by appearance.

How Often Should You Replace a Sub-Zero Air Purification Cartridge?

Replace the Sub-Zero 7042798 or 7007067 air purification cartridge every 12 months regardless of usage level. Unlike water filters that track gallon capacity, air cartridges reach adsorption capacity based on time and exposure rather than measurable throughput. Waiting for noticeable odors before replacing means the cartridge has already been operating past its effective service life for some time.

How to Install a Sub-Zero Air Purification Cartridge

1. Locate the air cartridge housing inside the Sub-Zero refrigerator, typically along the upper rear wall of the fresh food compartment
2. Press the release tab to disengage the old cartridge from the housing slot
3. Pull the old cartridge straight out
4. Remove the new cartridge from its packaging
5. Slide the new cartridge firmly into the housing until it snaps securely into place
6. No flushing or water line reset is required after installation
7. Note the installation date and schedule the next replacement at the 12 month mark

Shop Sub-Zero Air Purification Cartridge Replacement

Ready to replace your Sub-Zero air purification cartridge? Make sure you have the correct part number confirmed before ordering to avoid a mismatch.

Shop Sub-Zero 7042798 Air Purification Cartridge from purefridgewater.

FAQs

Is the Sub-Zero 7042798 the same as the 7007067?

No. They are separate part numbers designed for different Sub-Zero model generations with distinct housing formats. Check the part number on your existing cartridge before ordering to confirm which one your refrigerator requires.

How do I know if my Sub-Zero refrigerator uses the 7042798 or 7007067 cartridge?

The quickest way is to remove the existing cartridge and check the part number printed on its label. Alternatively, locate the refrigerator model number inside the fresh food compartment and cross-reference it against the compatibility list for each cartridge before ordering.

Does replacing the air cartridge really make a difference to food freshness?

Yes. A fresh activated carbon cartridge continuously reduces ethylene gas and airborne odor compounds inside the refrigerator. Produce stored near a fresh cartridge spoils more slowly because ethylene buildup , the primary driver of accelerated ripening , is being actively reduced rather than allowed to accumulate.

Can I use an aftermarket air cartridge instead of the Sub-Zero 7042798 or 7007067?

Aftermarket cartridges may physically fit the housing but activated carbon quality and adsorption capacity vary widely between manufacturers. A cartridge with lower carbon density or poor housing seal quality will not deliver the same consistent odor and ethylene reduction as a certified replacement rated specifically for Sub-Zero air filtration systems.

My refrigerator still smells after replacing the cartridge , what should I check?

A new cartridge reduces airborne odor compounds but does not remove odors embedded in refrigerator surfaces or food containers. Wipe down interior surfaces, remove any spoiled food, and allow 24 to 48 hours for the new cartridge to reach full adsorption capacity before concluding there is an issue with the cartridge itself.

Where can I find my Sub-Zero refrigerator model number to confirm compatibility?

The model number label is typically located inside the fresh food compartment along the upper door frame or side wall. On some built-in Sub-Zero models it may also appear behind the base grille at the front of the unit.