Sub zero water filters should be regularly replaced to ensure an unimpaired supply of pure water and ice from your Sub-Zero refrigerators dispensers.
To determine the appropriate Subzero refrigerator water filter for your fridge freezer you first need to determine your Sub zero model or serial numbers. These can easily be found by referencing your refrigerators rating plate.
For Sub-Zero fridge freezers with a model serial number below 4116297 you will need to purchase a Sub-Zero 7005017 Microbiological water filter. This unit greatly reduces water contaminants – including pollutants, bacteria and viruses – while ensuring the water dispensed tastes fresh. One of these filters will last between 6 to 12 months, depending on the intensity of your water usage.
If you live in a rural area and have very poor quality water, you may opt for the Subzero 7009931. This is compatible with the 7005017 but is a carbon block filter capable of withstanding harsh conditions without blocking.
If your Subzero refrigerator has a serial number 4134314 (or you own the Sub-Zero PRO48) then you will want to periodically replace your water filter with the Sub-Zero 4204490. This filtration cartridge works with most modern Sub Zero appliances, and has an operational lifespan of up to 12 months before requiring replacement.
If you own a high quality Sub Zero refrigerator it is only good sense to keep all your parts in order. Regular replacement of your Sub Zero water filter is a critical part of keeping your fridge freezer in proper operating condition.
I recommend you check out this article for information on other Subzero parts.