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Home > NSA 25I


NSA - National Safety Associates 
25I Under-Sink Water Filter 

Effective January 1st, 2008 NSA has turned over the Water and Air Filter program to WM Filter, Water Marque in Naples, Florida. WM Filter is the ONLY approved and authorized company offering replacement filters for all the NSA water and air products.

The NSA 25I Appliance Filter was the perfect solution for customers wanting to filter water going to their ice machine and water dispenser for the refrigerator. This unit utilized silver impregnated GAC (Granular Activated Carbon) to removed chemicals and organics such as chlorine, pesticides, detergents, bad taste, also while reducing sediment, discoloration and inhibiting bacteria growth. This unit was discontinued effective 1/1/2008 . It is highly recommended if you own one of these units to uninstall it and purchase the newly upgraded unit called the 25AP sold by WM Filter. While the NSA 25I appliance filter was an excellent design and water filter WM Filter has taken what NSA created and improved upon the design by replacing the silver impregnated media with KDF. KDF Media is used to replace silver-impregnated systems. Silver is toxic, KDF Process Media are not. Silver must be registered with the EPA as a toxic pesticide, KDF Process Media does not. 

Benefits of KDF Process Media

  • Significantly extend the life of granular activated carbon
  • Are recyclable
  • Effectively removes chlorine, heavy metals and control microorganisms
  • Are available in four granular styles, each designed for a specific need
  • Outperforms silver-impregnated carbons
  • Requires no EPA registration, thus less red tape

By keeping the same design as the NSA 25I Appliance Filter  and replacing the media with KDF the unit is now much more effective in removing chemicals as well as being much safer. The unit can easily be changed out for the new and improved 25AP. 

As of 2008 Water Marque has taken over ALL Air and WATER replacements for NSA. 

You can find the replacement model for the NSA 25I by clicking the product below

 Products (Total Items: 1)
25AP  Appliance Water Filter
25AP Appliance Water Filter
Average Rating 15 Review(s)
Your Price: $75.00