X6673 2-Pack Filters Fast Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack
X6673 R
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1" MERV 13 Furnace & AC Air Filter by Filters Fast® - 6-PackThe Filters Fast® Replacement for Lennox X6673 is a high-efficiency replacement HVAC air filter designed for compatible Lennox Healthy Climate, Carrier, Honeywell, Trion Air Bear, and other air cleaner systems that use the Lennox X6673 filter. Rated MERV 11, it captures airborne particles as small as 1 micron to help improve indoor air quality while protecting your heating and cooling equipment.
Note: These filters do not contain fiberglass.
Key Benefits:
- Captures airborne particles as small as 1 micron, including dust, pollen, pet dander, mold spores, smoke, and allergens.
- Up to 98% filtration efficiency to help improve indoor air quality and protect HVAC equipment.
- Lasts approximately 6–12 months under normal residential use.
- 2-pack value provides OEM-compatible performance at a lower cost than standard replacement filters.
- Fiberglass-free construction for durable, pleated media filtration.
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
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:
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:
Frequently Asked Questions:
How do you install the Filters Fast® Replacement for Lennox X6673?
- 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.
- Use a vacuum cleaner to remove any dirt from around the old filter.
- Remove any obstructions from behind or below the furnace.
- Remove any debris from around the furnace itself.
- Ensure that no edges or corners are tucked into another compartment.
- Line up tabs on top of the filter with slots on top of the blower.
- Locate arrows on the backside of the frame.
- Align frame with slots on top of the blower.
- 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
Will this filter help with allergies?
The MERV 11 media captures many common allergy-triggering particles, including pollen, mold spores, pet dander, and dust, helping improve indoor air quality when used in a properly functioning HVAC system.
Why won't every 20 × 25 × 5 filter fit my HVAC system?
Although many filters share the same nominal size, their actual dimensions can vary by manufacturer. HVAC media cabinets are designed around actual dimensions, so it's important to purchase a filter specifically listed as compatible with the Lennox X6673 or verify the actual dimensions before ordering.
Customer Reviews:
Very efficient filters!
Collected by Trustpilot.comGreat product, good price, great value
Collected by Trustpilot.comDoes a great job. We only have to change the ac filter 2 times a year.
Collected by Trustpilot.comon scheule arrival. Thanks
Collected by Trustpilot.comProduct was a perfect replacement and I am very happy with the out come.
Collected by Trustpilot.comReasonable price for quality products. Easy reordering.
Collected by Trustpilot.comVery healthy for our indoor climate.
Collected by Trustpilot.comI 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.comGreat pricing ,quick delivery, proven product
Collected by Trustpilot.comEasy to manage ordering, easy to track delivery.
Collected by Trustpilot.comGreat value , they work well
Collected by Trustpilot.comworks and fits perfectly
Collected by Trustpilot.comOrdered, delivered with great ease and timeliness. Fantastic fit!
Collected by Trustpilot.comCompany has very poor customer service
Collected by Trustpilot.comThe 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.comLooks to be durable and well constructed. Priced competitively. Shipped on time.
Collected by Trustpilot.comThese are well made
Collected by Trustpilot.comclean easy tor replace.
Collected by Trustpilot.comNot consistent in quality, disappointed. Can't believe they even shipped these.
Collected by Trustpilot.comThe filters are what is needed for my furnace. They do the job with no problems and are reasonably priced.
Collected by Trustpilot.comAsk Our Product Experts
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