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Filter Replacement

Your Horizon works hard to provide you with top-quality air. Show it some love with a replacement filter.

Excluded from Sale or Coupon Offers


  • In stock & ready to ship

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  • Free Shipping
    Ships for free to contiguous US
  • Free Shipping
    Not available for shipment to Canada

Keep the fresh air flowing.

Reduce dust, dander, pollen, mold spores, smoke particulates and more. The Horizon Filter Replacement traps 98.45% of airborne particulates larger than 0.3 microns in size and installs with ease.

  • four-layer HEPA-type filtration

  • reduces common irritants

  • replace every 4-6 months

Item #PHZF-21

Full Features

Four-layer HEPA filtration
  • four-layer composite filtration
  • pre-filter reduces large airborne particles
  • woven core traps 98.45% of particulates sized 0.3 microns, including smoke particulates
  • granulated carbon filter reduces odors, gases, VOCs, and formaldehyde
  • cold catalyst filter further reduces VOCs and other gases
Removes common irritants
  • removes contaminants like pollen, dander and dust
  • captures 98.45% of smoke particulates
Useful Resources

Not up to installing it yourself?

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Included filters
4-in-1 Composite Filter
Filtration grade
Filter life
4-6 months; 3500 hours
Coverage Area

280 sq ft at 2 air exchanges per hour

560 sq ft at 1 air exchange per hour

Model Number/SKU