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Lennox Y6604 20x26x5 MERV 16 Healthy Climate PureAir Furnace & AC Air Filter


Retail: $189.99 /ea
You Save: 26%
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Retail: $189.99
You Save: 26%
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Keep your Lennox Y6595 PureAir Air Purification System running like new with the Lennox Y6604 20x26x5 MERV 16 Healthy Climate PureAir Furnace & AC Air Filter This MERV 16 pleated filter furnace filter eliminates 95% of troublesome particles possibly contaminating the inside air of your home. Harmful particles such as pet dander, dust, and pollen are a thing of the past with this workhorse of a filter. Lennox recommends this filter be replaced every 12 months for optimal performance throughout your home. Make the air inside your home better and more breathable with the Lennox Y6604 Healthy Climate MERV 16 Pleated Filter.


  • Brand: Lennox
  • Part Number: Y6604, DLXY6604
  • Pack Size: 1-pack
  • Filter Life (Months): 12
  • MERV Rating: 16
  • Actual Product Width: 20"
  • Actual Product Height: 25 1/2"
  • Actual Product Depth: 4 3/8"

How do you install the Lennox Y6604?

  1. Unwrap the new Lennox Y6604 filter and place it in front of the old one so that you can see the bottom of the old filter.
  2. Use a vacuum cleaner to remove any dirt from around the old filter.
  3. Remove any obstructions from behind or below the furnace.
  4. Remove any debris from around the furnace itself.
  5. Ensure that no edges or corners are tucked into another compartment.
  6. Line up tabs on top of the filter with slots on top of the blower.
  7. Locate arrows on the backside of the frame.
  8. Align frame with slots on top of the blower.
  9. Press down on the frame until it locks.

How often should you replace the Lennox Y6604?

  • Changing your Lennox Y6604 is a very quick and easy process that should be done once every twelve months.

What contaminants does the Lennox Y6604 reduce?

  • The Lennox Y6604 is a MERV 16 air filter, which means that it reduces the following contaminants:

    • Dust
    • Pollen
    • Mold Spores
    • Pet Dander
    • Smoke & Smog
    • Allergens
    • Bacteria
    • Virus Carriers
    • Bioaerosols
    • Microorganisms

Compatible Models:

The Lennox Y6604 20x26x5 MERV 16 Healthy Climate PureAir Furnace & AC Air Filter is correct replacement for the following model numbers:

BrandModel NumberDescription
Lennox PCO3-20-16 System
Lennox Y6595 System
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Customer Reviews:

Total Reviews: 4 | Average Rating: 5 / 5.0


Great service good products

Collected by

An excellent filter at a good price. It was difficult to find this exact filter elsewhere for a reasonable price at the time I was searching for it. This is the third reorder.

Collected by
Jeff Ponkratz2023-03-08

Valuable filter for our home’s air conditioner system. We had a new home constructed next door where the concrete walls had to be cut to size, and yet we saw no additional dust inside our home.

Collected by
Kenneth Mitchell2021-10-19

Difficult is evaluate. Amount of fine dust on house after even 1/2 year use is very subjective. However I like the filter thickness which in my opinion justifies the one year replacement and somewhat justifies the high cost.

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