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X6673 2-Pack Filters Fast Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack

X6673 R

$74.95
Only $37.48 per Filter
Retail: $99.99 /ea
You Save: 25%
As low as
$74.95
Retail: $99.99
You Save: 25%
Ships in 1 to 2 business days. Shipping RestrictionsView shipping restrictions
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Frequently Bought With This Item

The Filters Fast® Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack provides quality air filtration without paying a premium price. The FF20255X6673M11 features a MERV 11 rating, which means that it is efficient at capturing airborne particles down to 1 micron in size. Removing these airborne particles can help improve allergies and alleviate sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. Aside from the health benefits, having a Filters Fast® Air Filter in your home will also extend the life of your heating and cooling system by making it work more efficiently.

Specifications:

  • Brand: Filters Fast®
  • Part Number: FF20255X6673M11
  • Replaces Part Number: X6673
  • Pack Size: 2
  • MERV Rating: 11
  • 98% Efficient Filtration
  • Filter Life: 6-12 Months
  • Nominal Dimensions: 20" x 25" x" 5"
  • Actual Dimensions: 19-5/8" x 24-5/8" x 4-1/4"
  • Looking for better air flow? Try the MERV 8 version of this filter
  • Looking for the optimal air filtration? Try the MERV 13 version of this filter
  • Note: These filters do not contain fiberglass.

How do you install the Filters Fast® Replacement for Lennox X6673?

  1. Unwrap the new Filters Fast® Replacement for Lennox X6673 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 Filters Fast® Replacement for Lennox X6673?

  • Changing your Filters Fast® Replacement for Lennox X6673 is a very quick and easy process that should be done once every six to twelve months.

What contaminants does the Filters Fast® Replacement for Lennox X6673 reduce?

  • The Filters Fast® Replacement for Lennox X6673 is a MERV 11 air filter, which means that it reduces the following contaminants:

    • Dust
    • Pollen
    • Mold Spores
    • Pet Dander
    • Smoke & Smog
    • Allergens

Compatible Parts:

The X6673 2-Pack Filters Fast Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack is the correct replacement for the following part numbers:

Part Number
3MR.HW052025M11.04
701980788727
DCA11.0520252PFF
DLX11.0520252PFF
FF20255X6673M11
FFC20255DLX
FX6673F
Hfc20-11
HRF20x25x5M11pk2
PF6673
RDP.HW052025M11AF60
X6673F-1
DISCOUNTFILTERS 180865
FILTERS FAST FFC20255X6673M11
LENNOX HCF20-10
LENNOX X0586
LENNOX X6673
NATIONALFILTERSALES PF-02-202505HW-2
No results for {X}

Compatible Models:

The X6673 2-Pack Filters Fast Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack is correct replacement for the following model numbers:

BrandModel NumberDescription
Carrier EZXCAB020 Air Cleaner
Carrier FILCABCC0020 Air Cleaner
Carrier MACA Air Cleaner
Carrier MPKA Air Cleaner
Carrier MPKA0020 Air Cleaner
Honeywell 1024 Air Cleaner
Honeywell 1032 Air Cleaner
Honeywell 1038 Air Cleaner
Honeywell 1067 Air Cleaner
Honeywell 2010 Air Cleaner
Honeywell 2044 Air Cleaner
Honeywell F100-1037 Air Cleaner
Honeywell F150E-1034 Air Cleaner
Honeywell F200E-1037 Air Cleaner
Honeywell F25A1068 Air Cleaner
Trion Air Bear 447380-002 Air Cleaner
Trion Air Bear 453000-001 Air Cleaner
Trion Air Bear 455602-001 Air Cleaner
Trion Air Bear SUPREME 2000 Air Cleaner
No results for {X}

Customer Reviews:

Total Reviews: 21 Average Rating: 4.4 / 5.0

Filtersfast Reviews on Trust Pilot external site
customer2026-05-02

Great product, good price, great value

Collected by Trustpilot.com
Ann Pawly2026-04-09

Does a great job. We only have to change the ac filter 2 times a year.

Collected by Trustpilot.com
customer2026-01-14

on scheule arrival. Thanks

Collected by Trustpilot.com
Joseph2025-12-15

Product was a perfect replacement and I am very happy with the out come.

Collected by Trustpilot.com
Glenn Dowell2025-10-16

Reasonable price for quality products. Easy reordering.

Collected by Trustpilot.com
william2025-09-30

Very healthy for our indoor climate.

Collected by Trustpilot.com
Matt2025-08-19

I JUST INSTALLED ONE LAST WEEK, SO ITS HARD FOR ME TO REALLY RATE THEM. THE ONLY THING I WOULD SAY IS THAT SHOULD EACH BE WRAP SO THAY STORE EASIER

Collected by Trustpilot.com
customer2025-07-14

Great pricing ,quick delivery, proven product

Collected by Trustpilot.com
Gene Murtha2025-07-13

Easy to manage ordering, easy to track delivery.

Collected by Trustpilot.com
customer2025-04-30

Great value , they work well

Collected by Trustpilot.com
Robert Gaudette2025-04-12

works and fits perfectly

Collected by Trustpilot.com
Nick B.2025-02-10

Ordered, delivered with great ease and timeliness. Fantastic fit!

Collected by Trustpilot.com
Tony Aprile2024-03-09

Company has very poor customer service

Collected by Trustpilot.com
Kenneth Parker2023-12-08

The product was smaller than the original. I had the warranty company come check our new furnace because it whistled and we noticed more dust in the house.

Collected by Trustpilot.com
John Champion2023-07-13

Looks to be durable and well constructed. Priced competitively. Shipped on time.

Collected by Trustpilot.com
STEVE BRESLICH2023-01-25

These are well made

Collected by Trustpilot.com
Fran T.2022-08-20

clean easy tor replace.

Collected by Trustpilot.com
Sara Winsper2022-05-09

Not consistent in quality, disappointed. Can't believe they even shipped these.

Collected by Trustpilot.com
Alfred Darold2022-03-25

The filters are what is needed for my furnace. They do the job with no problems and are reasonably priced.

Collected by Trustpilot.com
Frank Minissale2022-02-28

Excellent filters. Been using them for 15 years now. Great service.

Collected by Trustpilot.com


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