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25AP  Appliance Water Filter
NSA 25I replaced by 25AP

25AP Appliance Water Filter

Part Number 3100Q
review 15 Review(s)
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Are you tired of having to replace your built-in refrigerator water filter every 3-6 months? Then this filter is your answer. Just hook up this filter to the main water line running to your refrigerator and you're done! No need to worry for 2-3 YEARS. One of the easiest water filters to install.


25AP Appliance KDF/GAC Water Filter is the top of the line commercial and residential inline water filter. This filter provides gallon after gallon of clean, clear, and good tasting water. Designed for municipal treated water sources only, this unit is compatible with water coolers, water fountains, ice makers, and refrigerators. This commercial grade in-line water treatment unit is used with COLD WATER ONLY. It features state-of-the-art engineering and design that has surpassed the most rigorous and demanding quality assurance testing. It features KDF alloy combined with granular activated carbon filtration media bed which reduces impurities, heavy metals, bad tastes, odors, colors, etc.

The 25AP will allow you to have quality drinking water and ice from your refrigerator.

This filter also replaces previous NSA 25I filters.

Filter vs. Bottled Water: Cost savings est. $4,500 over 3 years
Capacity : 2-3 Years or 3,000 gallons under normal use.
Media : KDF/Granular Activated Carbon.
Fittings: Inlet/Outlet - 1/4  Inch
Dimensions: Height -12'', Diameter - 3''
Average Weight: Dry- 2lbs., Shipping -3lbs.
Warranty:  1 Year, Pro-rata.


*We have discontinued selling the compression fitting for the 25ap.
Customer Reviews View All Reviews
Rating Easy replacement
My Inlaws have had an under sink filter for many years. While searching for a replacement I learned it was acquired by WM. The new filter installed very easily. Water quality is excellent! Tastes great!
  Reviewed by:   from Labelle FL. on 2/18/2021
Rating Excellent Water Filter
This water filter works well.
  Reviewed by:   from Yorktown Heights, NY. on 12/21/2018
Rating Work great for years
I've been using 25Is for years. They last a very long time and are easy to install. The quick disconnect fittings of the 25AP make things even easier.
  Reviewed by:   from Santa Rita, Guam. on 8/25/2018
Rating Clean tasting ice!
We bought a fridge without a water dispenser so the ice maker wasn't filtered water. Awful tasting! After weeks of buying ice (and what a pain trying to remember to buy the ice!) we finally bought the freezer filter. Why didn't we do it sooner? Clean tasting ice, convenient, and more cost effective!
  Reviewed by:   from Fort Worth. on 8/17/2017
Rating Mr.
So far very good. No side taste to water.
  Reviewed by:   from Pincourt. on 9/19/2016
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