Lennox X4912 Healthy Climate HEPA 20 Bypass Air Filtration System, 180 CFM


  • Dimensions: 14x17.875x14 inches
  • Offers a Three-Stage Filtration Process
  • Delivers a powerful, yet quiet performance
  • Designed to work with any heating and cooling system for total home comfort
  • Provides up to 99.97% efficient in removing particles and bioaerosols down to 0.3 micron


This is the mid-sized model that is capable of cleaning 180 CFM of air on standard residential or commercial heating and air conditioning systems. This Lennox air filtration system also provides adequate filtration for a tightly-constructed home up to 1500 square feet.

With this Lennox HEPA air filtration system, the Three-Stage Filtration Process includes: 1. An inexpensive pre-filter to remove larger particulates from the air. 2. HEPA that removes 99.97% of particulates down to 0.3 micron. 3. Thick carbon filter for removing chemicals and odors from the air.

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Customer Reviews

Based on 1 review
Bruce R
Great filter. Very effective, relatively quiet

I bought this during the fires in California and it totally cleans the air. Running this there is no trace of smoke.


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