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Replacement for Model Y6595
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Lennox Y6604 20x26x5 MERV 16 Healthy Climate PureAir Furnace & AC Air Filter

Y6604
$188.95
Buy 1 - 2 for $188.95 ea.
Buy 3+ for $183.95 ea.
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Lennox Y6604 Pureair Pco3-20-16 Merv 16 Replacement Filter by Filters Fast

Y6604 FF
$136.95
Buy 1 - 3 for $136.95 ea.
Buy 4+ for $126.95 ea.
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Ships in 1 to 2 business days.
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Lennox Y6604
Lennox Y6604 FF
Filter Life
6 - 12 Months
6 - 12 Months
MERV Rating
MERV 16
MERV 16
Reduces Dust
Reduces Pollen
Reduces Mold Spores
Reduces Pet Dander
Reduces Smoke & Smog
Reduces Allergens
Reduces Bacteria
Reduces Virus Carriers
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Product Information
Frequently Bought With This Item

The Lennox Y6604 20x26x5 MERV 16 Healthy Climate PureAir Furnace & AC Air Filter is designed to help improve indoor air quality by capturing up to 95% of airborne particles, including dust, pollen, and pet dander. This 20x26x5-inch replacement filter is compatible with the Lennox Y6595 PureAir Air Purification System.

Key Benefits:

  • MERV 16 filtration captures a high percentage of airborne particles.
  • Reduces allergens such as pet dander, dust mites, and pollen to help improve indoor air quality.
  • Captures Microscopic Particles that lower-efficiency filters may allow to pass through.
  • Designed to last up to 12 months.
  • Helps maintain the filtration performance of compatible Lennox Healthy Climate PureAir systems.
  • Disposable filter design makes routine maintenance and replacement straightforward.

Specifications:

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

Compatible Parts:

The Lennox Y6604 is the correct replacement for the following part numbers:

Part Number
  • DLXY6604
  • No results for {X}

Compatible Models:

The Lennox Y6604 is correct replacement for the following model numbers:

BrandModel NumberDescription
  • Lennox PCO3-20-16 Air Purifier
  • Lennox Y6595 Air Purifier
  • No results for {X}

Frequently Asked Questions:

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

Does the Lennox Y6604 need to be replaced more frequently in homes with pets?

Homes with pets, heavy dust, or other elevated airborne particle levels may require more frequent filter replacement. Annual replacement is recommended under normal conditions, with more frequent changes when dust and dirt loads are higher.


Customer Reviews:

Total Reviews: 13 Average Rating: 4.9 / 5.0

Filtersfast Reviews on Trust Pilot external site (opens in a new tab)
Rebekah Brewer2026-09-07

Perfect for my furnace and AC.

Collected by Trustpilot.com
John Layman2026-04-29

Well packaged filter, timely delivery.

Collected by Trustpilot.com
K. Irwin2025-10-14

They work great definitely cut down on the dust in the house

Collected by Trustpilot.com
John Perrino2025-08-04

Great Quality. Materials appear to beexcellent

Collected by Trustpilot.com
Rebekah Brewer2025-03-10

An excellent filter for my home. Best part is it lasts for a year!

Collected by Trustpilot.com
John Herrick2024-12-18

Great service

Collected by Trustpilot.com
Laura2024-06-13

Love this filter. Really makes a difference in how often I need to dust the furniture. It’s amazing. And it lasts a year! Highly recommend.

Collected by Trustpilot.com
Cary Clonts2024-04-15

very good easy to install

Collected by Trustpilot.com
Larry Weikel2024-02-09

It seems to do a fair job, however the house is still very dusty. Dust one day and two days later it appears as if we never dust. I am starting to wonder about this EXPENSIVE filter.

Collected by Trustpilot.com
customer2023-05-12

Great service good products

Collected by Trustpilot.com
RAH2023-04-05

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 Trustpilot.com
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 Trustpilot.com
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.

Collected by Trustpilot.com

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