Filters Fast® Replacement for Lennox 91X23 MERV 8 Furnace & AC Air Filter - 6-Pack
91X23 FF
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Frequently Bought With This Item
Filters Fast® Custom Size Air Filters - Made to your size Fast
1" MERV 11 Furnace & AC Air Filter by Filters Fast® - 6-Pack
1" MERV 13 Furnace & AC Air Filter by Filters Fast® - 6-PackThe Filters Fast® Replacement for Lennox 91X23 MERV 8 Furnace & AC Air Filter - 6-Pack effectively reduces pollen, dust, pet dander and other allergens from indoor air. Removing these airborne particles alleviates allergies and sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. Aside from the health benefits, this HVAC air filter in your home will also extend the life of your heating and cooling system by making it work more efficiently.
Note: Our MERV 8 filters do not come individually wrapped. These filters do not contain fiberglass.
Specifications:
- Brand: Filters Fast®
- Part Number: 91X23 FF
- Replaces Part Number: 91X23
- Pack Size: 6
- Filter Life: 1 - 3 months
- MERV Rating: 8
- Filter Type: Pleated
- Material: Synthetic
- Tolerance: (+/- ) 1/8" tolerance
- For residential use only
How do you install the Filters Fast® Replacement for Lennox 91X23?
- Once your air filters arrive, gather your supplies including a ladder (if needed,) safety goggles, gloves, a mask, and a disposable bag.
- Remove the metal grate from your air return.
- Carefully remove the used air filter and place it immediately and gently into the disposable bag. Then tie the bag sealed.
- Place the new air filter in place of the filter you just removed and replace the metal grille.
How often should you replace the Filters Fast® Replacement for Lennox 91X23?
- Changing your Filters Fast® Replacement for Lennox 91X23 is a very quick and easy process that should be done once every one to three months.
What contaminants does the Filters Fast® Replacement for Lennox 91X23 reduce?
-
The Filters Fast® Replacement for Lennox 91X23 is a MERV 8 air filter, which means that it reduces the following contaminants:
- Dust
- Pollen
- Mold Spores
- Other Common Airborne Allergens
Resources:
Compatible Parts:
The Filters Fast® Replacement for Lennox 91X23 MERV 8 Furnace & AC Air Filter - 6-Pack is the correct replacement for the following part numbers:
Part Number
7100182284
7100183959
7100186818
7100187098
7100189227
7100192557XXX
7100268565
7100288704
7100288715
7100288843
9837DC-6
CP8.0119.7X35.76PK
CPR8.0116.5X21.6PFF
DLX91X24
DLX98N43
FFM8 6PK-0750751
FFM8 6PK-08081
FFM8 6PK-09111
FFM8 6PK-10101
FFM8 6PK-10161
FFM8 6PK-10201
FFM8 6PK-10241
FFM8 6PK-10251
FFM8 6PK-10301
FFM8 6PK-1151151
FFM8 6PK-12121
FFM8 6PK-12151
FFM8 6PK-12161
FFM8 6PK-12181
FFM8 6PK-12201
FFM8 6PK-12221
FFM8 6PK-12241
FFM8 6PK-12251
FFM8 6PK-12301
FFM8 6PK-12361
FFM8 6PK-132151
FFM8 6PK-13221
FFM8 6PK-14141
FFM8 6PK-141551
FFM8 6PK-14161
FFM8 6PK-14181
FFM8 6PK-14201
FFM8 6PK-14221
FFM8 6PK-14241
FFM8 6PK-14251
FFM8 6PK-14301
FFM8 6PK-14361
FFM8 6PK-15201
FFM8 6PK-15251
FFM8 6PK-15301
FFM8 6PK-16161
FFM8 6PK-16181
FFM8 6PK-16201
FFM8 6PK-16241
FFM8 6PK-16251
FFM8 6PK-16301
FFM8 6PK-16321
FFM8 6PK-17221
FFM8 6PK-1751751
FFM8 6PK-175211
FFM8 6PK-18181
FFM8 6PK-18201
FFM8 6PK-18221
FFM8 6PK-18241
FFM8 6PK-18251
FFM8 6PK-18301
FFM8 6PK-19241
FFM8 6PK-20201
FFM8 6PK-20211
FFM8 6PK-202151
FFM8 6PK-20221
FFM8 6PK-20241
FFM8 6PK-20251
FFM8 6PK-20261
FFM8 6PK-20301
FFM8 6PK-20361
FFM8 6PK-212451
FFM8 6PK-21523251
FFM8 6PK-22221
FFM8 6PK-22241
FFM8 6PK-24241
FFM8 6PK-24301
FFM8 6PK-25251
FFM8 6PK-28301
FFM8 6PK-30301
FFM8 6PK-30361
FFM8PLEAT1-12241
FFM8PLEAT1-16201
FFM8PLEAT1-16241
FFM8PLEAT1-16251
FFM8PLEAT1-18241
FFM8PLEAT1-20201
FFM8PLEAT1-20241
FFM8PLEAT1-20251
FFM8PLEAT1-20301
FFM8PLEAT1-24241
FFM8PLEAT612241
FFM8PLEAT616201
FFM8PLEAT616241
FFM8PLEAT616251
FFM8PLEAT618241
FFM8PLEAT620201
FFM8PLEAT620241
FFM8PLEAT620251
FFM8PLEAT620301
FFM8PLEAT624241
FLRSF1185 R
KFAFK0212MED R
LIGHTBLU-10201
LIGHTBLU-12121
LIGHTBLU-14141
LIGHTBLU-14201
LIGHTBLU-14251
LIGHTBLU-16201
LIGHTBLU-16251
LIGHTBLU-18181
LIGHTBLU-20201
LIGHTBLU-20251
LIGHTBLU-20301
LIGHTBLU-25251
PF8.0107.507.5A6PFF
PF8.010808A6PFF
PF8.010911A6PFF
PF8.0110106P
PF8.0110106PFF
PF8.0110166PFF
PF8.0110256PFF
PF8.0110306PFF
PF8.0111.511.5A6PFF
PF8.0112156PFF
PF8.0112166PFF
PF8.0112226PFF
PF8.011322A6PFF
PF8.011416A6P
PF8.011422A6PFF
PF8.0114366PFF
PF8.0115256PFF
PF8.0115306PFF
PF8.0116186PFF
PF8.0117.517.5A6PFF
PF8.0117.521A6PFF
PF8.0117226PFF
PF8.011924A6PFF
PF8.012026A6PFF
PF8.012124.5A6P
PF8.012224A6PFF
PF8.0128306PFF
PR08.011010PFF
PR08.011020PFF
PR08.011024PFF
PR08.011212PFF
PR08.011218PFF
PR08.011220PFF
PR08.011224PFF
PR08.011225PFF
PR08.011230PFF
PR08.011236PFF
PR08.011321.5APFF
PR08.011414PFF
PR08.011415.5APFF
PR08.011418PFF
PR08.011420PFF
PR08.011424PFF
PR08.011425PFF
PR08.011430PFF
PR08.011520PFF
PR08.011616PFF
PR08.011620PFF
PR08.011624PFF
PR08.011625PFF
PR08.011630PFF
PR08.011632PFF
PR08.011818PFF
PR08.011820PFF
PR08.011822PFF
PR08.011824PFF
PR08.011825PFF
PR08.011830PFF
PR08.012020PFF
PR08.012021.5APFF
PR08.012021PFF
PR08.012022PFF
PR08.012024PFF
PR08.012025PFF
PR08.012030PFF
PR08.0121.523.2APFF
PR08.012222PFF
PR08.012424PFF
PR08.012430PFF
PR08.012525PFF
PR08.013030PFF
PR08.013036PFF
American Standard FLRSF1185
Carrier KFAFK0212MED
DUPONT ALLERGEN AIR FILTERS
DUPONT BRONZE
DUPONT CONTRACTOR
DUPONT SILVER
DUPONT SILVER EXTRA
FILTRETE MICRO ALLERGEN FILTERS
Lennox 91X23
Trane FLRSF1185
No results for {X}
Compatible Models:
The Filters Fast® Replacement for Lennox 91X23 MERV 8 Furnace & AC Air Filter - 6-Pack is correct replacement for the following model numbers:
BrandModel NumberDescription
ALL FURNACES THAT REQUIRE A 15 X 20 X 1 AIR FILTER Air Filters Furnace Filters
ALL FURNACES THAT REQUIRE A 20 X 20 X 1 AIR FILTER Air Filters Furnace Filters
Carrier FA4ANC036 Air Filters Furnace Filters
Carrier FA4ANF030 Air Filters Furnace Filters
Carrier FA4ANF036 Air Filters Furnace Filters
Carrier FA4BNF036 Air Filters Furnace Filters
Carrier FA4CNC024 Air Filters Furnace Filters
Carrier FA4CNC030 Air Filters Furnace Filters
Carrier FA4CNF024000AAAA Air Filter
Carrier FA4CNF030 Air Filters Furnace Filters
Carrier FB4ANA036 Air Filters Furnace Filters
Carrier FB4ANF030 Air Filters Furnace Filters
Carrier FB4ANF036 Air Filters Furnace Filters
Carrier FB4BNF030 Air Filters Furnace Filters
Carrier FE4ANF002 Air Filters Furnace Filters
Carrier FX4ANF030 Air Filters Furnace Filters
Carrier FX4BNF030 Air Filters Furnace Filters
Carrier FX4CNF024 Air Filters Furnace Filters
Carrier PF1MNA036 Air Filters Furnace Filters
Filters Fast COMMERCIAL HVAC SYSTEMS Industrial Air
Filters Fast INDUSTRIAL AIR CLEANERS Industrial Air
No results for {X}
Customer Reviews:
Marlis Kuykendall2026-06-04
All good. Thank you.
Collected by Trustpilot.comFiltersFast Response:
Hi Marlis,
We just saw your 5-star review for our 1" MERV 8 Furnace & AC Air Filter by Filters Fastr and wanted to say a massive thank you! Knowing you're happy with your purchase means the world to our team. -- The FiltersFast.com Team
Paula Stork2026-05-29
Lesser quality than I was expecting. Will upgrade next time!
Collected by Trustpilot.comFiltersFast Response:
Hi Paula - thank you for your review. Merv 8 filters are our "lightest" Merv filters and we do offer the Merv 11 and the Merv 13 for a more substantial filtration experience! We look forward to helping you with your next purchase. Our Filters Fast Team appreciates your business and your feedback!
Linda Harvell2026-05-26
Good filters for fair price
Collected by Trustpilot.comFiltersFast Response:
Hello Linda,
Thank you for your feedback! We’re glad to hear you found our filters to be high quality and fairly priced. We appreciate your support and look forward to serving you again!
- The Filters Fast Team
georgette sterbenz2026-05-25
Fits my a/c perfectly. Love the ease of use . Great price and fast shipping.
Collected by Trustpilot.comFiltersFast Response:
Hello Georgette,
Thank you for the wonderful feedback about the Filters Fast furnace & AC 6 pack filters. We're so happy to hear that they fit perfectly, work great and you are pleased with the price.
-The Filters Fast Team
customer2026-05-25
Easy ordering & prompt shipping
Collected by Trustpilot.comFiltersFast Response:
Hi Friend.
Thank you for the great 5 star rating & review.
We appreciate your feedback.
- The Filters Fast Team
Paula Giumarelli-Garcia2026-05-05
Excellent
Collected by Trustpilot.comFiltersFast Response:
Hello Paula, Thank you so much for your 5-star review! We’re delighted to hear the product met your expectations; it truly means a lot to us.
- The Filters Fast team
Scott2026-05-04
I’ve used these for many years and they’re perfect for me.
Collected by Trustpilot.comFiltersFast Response:
Hi Scott -
Thank you for reviewing our Filters Fast brand 1" MERV 8 Furnace & AC Air Filter that we make right here in the USA! We are happy to hear you have been using these filters successfully for years and that they are perfect for you!
Our Filters Fast Team appreciates your business and your feedback!
Mark Evans2026-05-01
High quality helps keep everything running smoothly.
Collected by Trustpilot.comFiltersFast Response:
Hi Mark - LOVE the photos!! Thank you for sharing them and for your 5 star review of our Filters Fast brand of HVAC air filters! We are happy to hear you find them to be high quality and they keep your home running smoothly!
Our Filters Fast Team appreciates your business and your feedback!
Sherry Russo2026-04-27
It works well
Collected by Trustpilot.comFiltersFast Response:
Thanks for sharing your feedback! Simple and straightforward—we like it. We appreciate you taking the time to leave a review. - The FiltersFast Team
Home ownercustomer2026-04-27
Used the same filter for a while, seem to do a good job, arrived quickly from supplier, seem to be fair price compared to other brands.
Collected by Trustpilot.comFiltersFast Response:
Thank you for sharing your experience! We’re glad to hear the filters have been working well for you and that they arrived quickly. It’s great to know you’ve found them to be a good value compared to other brands—we appreciate your support! - The FiltersFast Team
Blake Conklin2026-04-13
Easy to order and quick delivery.
Collected by Trustpilot.comFiltersFast Response:
Hi Blake!
Thank you for the great 5 star product review on the Filters Fast brand air filters. We appreciate the feedback.
- The Filters Fast Team
Sharon Mcclory2026-04-13
The filters are a good value and work well
Collected by Trustpilot.comFiltersFast Response:
Sharon!
Thank you for the great product review of the air Filters Fast filters.
-The Filters Fast Team
Shirley F2026-04-10
Been ordering these a/c filters several times. Product and price very economical.
Collected by Trustpilot.comFiltersFast Response:
Hello Shirley,
We're glad that you are pleased with the pricing and quality of the Filters Fast furnace & ac merv 8 6-pack filters. Thank you for the feedback and for shopping with us.
-The Filters Fast Team
Valued Customer2026-04-08
Exactly as advertised
Collected by Trustpilot.comFiltersFast Response:
Hello valued customer,
We're glad that you are pleased with using the Filters Fast merv 8 6-pack furnace & ac filters. Thank you for the feedback and for shopping with us.
-The Filters Fast Team
Michael Marcucella2026-03-31
The price and quality of this filter is perfect for our system
Collected by Trustpilot.comFiltersFast Response:
Hello Michael! That's awesome that the MERV 8 air filter is perfect for you! We also really appreciate the 5 stars and you sharing your feedback! We're looking forward to working with you again soon!
-- The Filters Fast Team
John Tynes2026-03-30
The filters are good enough for me.
Collected by Trustpilot.comFiltersFast Response:
Hi John.
We thank you for taking time to leave a rating and review. We're happy to hear these are good air filters for you!
- The Filters Fast Team
customer Manuel P2026-03-30
Can't beat the price...can't beat the quality..and certainly can't beat the service!!
Collected by Trustpilot.comFiltersFast Response:
Hello Manuel,
Thank you for the wonderful review. We're so happy to hear that you are pleased with the price and quality of the Filters Fast Merv 8 6-pack furnace & ac filters. Thank you for shopping with us.
-The Filters Fast Team
John Karas2026-03-28
Just as good as any good filter for a good price and delivered in good packaging.
Collected by Trustpilot.comFiltersFast Response:
Hello John,
Thank you for the positive review about the Filters Fast Merv 8, 6 pack AC & furnace filters. We're glad they work great for you and are packaged well. Thank you for shopping with us.
-The Filters Fast Team
customerRobert Gilbert2026-03-21
excellent materials used to fabricate the filters I ordered. They hold up well and do the job they're intended for. Thank you for a quality product.
Collected by Trustpilot.comFiltersFast Response:
Hi Robert!
Thank you for the wonderful review of our FF MERV 8 air filters. We're are pleased to hear your feedback! - The Filters Fast Team
Janis Ledum2026-03-20
Great filters that can come on a keep full basis. Very handy for a busy life!
Collected by Trustpilot.comFiltersFast Response:
Hello Janis,
We're so happy to hear that the Filters Fast Merv 8 6-Pack furnace & AC filters work great for your busy lifestyle. Thank you for the feedback and for shopping with us.
-The Filters Fast Team
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