Find replacement filters for your Sub-Zero refrigerator or undercounter ice maker. This collection includes water filters, air purification cartridges and selected combinations for appliances that use both types. Choosing the correct replacement helps you maintain the filtration system fitted to your appliance.
Compare Sub-Zero Water and Air Filters
Use the table below to identify the main filter types and related product listings. Water filters and air cartridges have different functions, so choose the type required by your appliance.
| Product |
Part Number |
Filter Type |
Important Details |
| Sub-Zero Refrigerator Water Filter |
4204490 |
Water filter |
Twist-in cartridge for selected Classic, Designer and PRO models |
| Sub-Zero Refrigerator Water Filter |
7023812 |
Water filter |
Push-in style used in selected Classic built-in models; check the appliance's serial number |
| Sub-Zero UC-15 Ice Maker Water Filter |
7012333 |
Water filter |
Designed for the compatible UC-15I undercounter ice maker; 7042803 is the newer part reference |
| Sub-Zero Air Purification Cartridge |
7042798 |
Air filter |
Fits selected refrigerator models; confirm compatibility before ordering |
| Sub-Zero Air Purification Cartridge |
7007067 |
Air filter |
An earlier air cartridge reference associated with 7042798; check your appliance requirements |
| Sub-Zero Water Filter and Air Cartridge Combo |
4204490 + 7042798 |
Combined listing |
Includes a water filter and an air cartridge |
| Sub-Zero Water Filter and Air Cartridge Combo |
4204490 + 7007067 |
Combined listing |
Includes a water filter and an air cartridge |
Part numbers and replacement references can change over time. The 7023812 has been superseded by 7045454 in applicable systems, while 7012333 has been superseded by 7042803 for the compatible UC-15I ice maker. Confirm the correct replacement for your appliance before purchasing.
Benefits of Sub-Zero Refrigerator Water and Air Filters
Improve Water Taste and Odour
A compatible water filter helps reduce chlorine taste and odour in drinking water. Some filter systems also reduce other specified contaminants, depending on the cartridge and its verified performance claims.
Support Your Refrigerator's Water System
The correct water filter helps maintain the intended fit and operation of your refrigerator's filtration system. Replacing it according to the recommended schedule also helps address reduced water flow caused by a filter that has reached its service limit.
Help Maintain Refrigerator Air Quality
An air purification cartridge serves a different purpose from a water filter. The correct cartridge supports the refrigerator's air treatment system and helps manage certain unwanted substances in the refrigerator's air.
Make Filter Replacement More Convenient
Keeping the correct replacement part number on hand makes routine maintenance easier. A single cartridge suits an individual replacement, while a compatible combo listing can be convenient when your appliance requires both a water filter and an air cartridge.
How to Choose the Right Sub-Zero Filter
Start with the part number printed on your current cartridge. The 4204490 is a twist-in water filter, while the 7023812 is a push-in style used in selected models. The 7012333 is associated with the UC-15I undercounter ice maker.
For air filtration, check whether your appliance requires 7042798 or uses the earlier 7007067 reference. Do not assume that every Sub-Zero refrigerator uses the same air cartridge.
If you cannot find the number on your existing filter, check your appliance's model and serial number in the user manual or the manufacturer's parts information. This is particularly important for older refrigerators, where the correct replacement may depend on the serial number.
When Should You Replace Sub-Zero Filters?
Follow the replacement interval provided for your specific filter and refrigerator. Many Sub-Zero water filters require replacement when the appliance's filter indicator appears or at the interval stated in the user guide. Water use and local water conditions can affect how soon a cartridge reaches its service limit.
Air purification cartridges have their own maintenance schedule, so check the instructions for the relevant cartridge. After installing a new water filter, follow the appliance's flushing instructions before using the filtered water or making ice.
Frequently Asked Questions
Which water filter fits my Sub-Zero refrigerator?
The correct filter depends on your appliance model and, in some cases, its serial number. Common references include 4204490 and 7023812, but they use different fittings. Check your existing cartridge before ordering.
Are Sub-Zero 4204490 and 7023812 interchangeable?
No. They are different filter designs. The 4204490 is a twist-in filter, while the 7023812 is a push-in style used in selected models. Confirm compatibility with your appliance.
Is the 7012333 filter used in every Sub-Zero refrigerator?
No. The 7012333 is associated with the UC-15I undercounter ice maker. The newer replacement reference for the applicable system is 7042803. Check your ice maker's model details before buying.
What is the difference between 7042798 and 7007067?
Both are associated with Sub-Zero air purification cartridges, and 7042798 is listed as a replacement reference for 7007067 in applicable systems. Check your refrigerator's requirements to confirm which part to order.
Can I replace the water filter and air cartridge together?
Yes, if your appliance uses both types and the combination contains the correct parts. The 4204490 + 7042798 and 4204490 + 7007067 listings combine a water filter with an air cartridge. Confirm the compatibility of each part before choosing a set.
Find Your Sub-Zero Filter Replacement
Check the number on your current cartridge and match it to your refrigerator or ice maker model. Compare the available water filters, air purification cartridges and combination listings to choose the right replacement for your appliance. Correct part matching helps you avoid ordering a filter that does not fit your system.
