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AIR-O-SWISS® 7531 Ultrasonic Humidifier Demineralization Cartridge

Sale $15.99

Regular $16.99

Eliminate mineral buildup in your humidifier water tank with this AIR-O-SWISS demineralization cartridge.


Limit 5 per household.


Product Features:

  • Resin granules prevent buildup of mineral deposits.
  • Silver-treated to inhibit microbial growth on cartridge.

What's Included:

  • One cartridge

Product Details:

  • For use with AIR-O-SWISS Ultrasonic humidifiers:
    • 7133, 7135, 7142, 7144 & 7145
  • Model no. 30879

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