Looking for the best Generalaire filters to keep your home’s air clean and fresh? Discover our top 10 picks to help you breathe easier and improve your indoor air quality.
Generalaire filters are a top choice for keeping your home’s air clean and fresh. These filters are designed to trap dust, pollen, and other small particles, ensuring you breathe easier every day. With various sizes and models, there’s a perfect fit for your system.
Choosing the right Generalaire filter can improve your indoor air quality and extend the life of your HVAC system. Let’s explore the best options to help you make a smart decision.
List of Top 10 Generalaire Filters
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GeneralAire Pleated Media filter 12758 General 3-PACK SPECIAL-For AC-1, #4001 |
This 3-pack of GeneralAire Pleated Media filters is perfect for homeowners who want to keep their air clean and their AC running smoothly. It’s easy to install and fits popular models like GeneralAire AC1 and Carrier 31MF020. |
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GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter, Actual Size:19 5/8″ x 24 3/16″ x 4 15/16″ – Case of 3 Filters |
This GeneralAire #4551 furnace filter is perfect for homeowners who want clean, healthy air in their homes. It’s easy to install and fits perfectly in compatible systems, ensuring efficient filtration for a comfortable living space. |
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GeneralAire # 4541 MERV 11 for # GF 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8″ x 24 3/16″ x 4 15/16″ Case of 3 Filters- MEASURE CAREFULLY BEFORE ORDERING ! |
This GeneralAire #4541 MERV 11 filter is perfect for homeowners who need a reliable replacement for their 16x25x5 furnace. Measure carefully before ordering to ensure a perfect fit. |
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GeneralAire # 4541 MERV 11 for # GF 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8″ x 24 3/16″ x 4 15/16″ Case of 2 Filters – MEASURE CAREFULLY BEFORE ORDERING ! |
This GeneralAire #4541 MERV 11 filter is perfect for homeowners with a 16x25x5 furnace. It’s easy to install and keeps your air clean. Measure carefully before ordering to ensure the perfect fit! |
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Generalaire 6FM2025 Reservepro 4551 Air Filter-20x 25x 5-Genuine OEM Replacement for Old 4501 |
The Generalaire 6FM2025 Reservepro 4551 Air Filter is perfect for homeowners who need a reliable, high-quality air filter. It’s ideal for those with specific HVAC systems that require a 20x25x5 filter and want clean, fresh air in their homes. |
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MERV 11 4001 Filter for GeneralAire 12758 for AC1, AC22, AC3, Carrier 31MF, and Bryant® 902BX (1) |
This MERV 11 filter is perfect for homeowners who want clean, fresh air. It’s easy to install and works with GeneralAire, Carrier, and Bryant systems. |
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OEM GeneralAire 990-13 Evaporator Pad Media Filter for 709 990 1040 1042 1137 SL16 |
The OEM GeneralAire 990-13 Evaporator Pad Media Filter is perfect for homeowners who own Generalaire models SL-16, 1137, 709, 1040, or 1042. It’s a single filter, not a pack, designed to maximize water distribution and keep your system running smoothly. |
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GeneralAire ReservePro # 4556 20″ x 20″ x 5″ Air filter, MERV 11-6FM2020 (2-Pack) For MAC2020- and Replacement for Air Bear |
The GeneralAire ReservePro # 4556 is perfect for homeowners who need a reliable air filter replacement. It’s ideal for those with Air Bear systems and fits 20″ x 20″ x 5″ frames. Measure your old filter to ensure a perfect match. |
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GeneralAire 4541 Furnace Filter | Actual Size 15 5/8″ x 24 3/16″ x 4 15/16.” (16x25x5) | Replaces Part # 4511 | MERV 11 | Pack of 2 |
This product is perfect for homeowners who need a reliable furnace filter replacement. It’s ideal for those with GeneralAire, Trion, Source1, Skuttle, or Ultravation systems. If you want clean air and a perfect fit, this MERV 11 filter is for you. |
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GeneralAire # 4551 20x25x5 furnace filter,-Exact Dimensions are 19 5/8″x 24 3/16″x 4 15/16″- Please Measure Carefully Before Ordering !-case of 2 filters |
This GeneralAire #4551 furnace filter is perfect for homeowners who need a higher efficiency Merv 11 filter to replace their old Merv 10 filters. It’s also ideal for those with Reservepro #4501 or similar models, as long as they measure carefully to ensure the exact dimensions of 19 5/8″x 24 3/16″x 4 15/16″ match their needs. |
Detailed Reviews
Discover the top 10 Generalaire Filters handpicked for performance, value, and customer satisfaction. Each filter is expert-reviewed to ensure it meets your air quality needs. Whether you prioritize comfort, affordability, or efficiency, this guide has you covered. Dive in to find the perfect Generalaire Filter for your home or office.
1. GeneralAire Pleated Media filter 12758 General 3-PACK SPECIAL-For AC-1, #4001

The GeneralAire Pleated Media Filter 12758 is a 3-pack special designed for AC-1 and other compatible systems. It features a MERV 11 rating, ensuring high-quality air filtration for your home.
This filter fits GeneralAire AC1, AC22, and other models like Bryant 902BX and Carrier 31MF020. It measures 19 5/8″ x 25″ x 6″ and comes collapsed for easy shipping. Simply expand it into your existing frame for use.
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Perfect For:
This 3-pack of GeneralAire Pleated Media filters is perfect for homeowners who want to keep their air clean and their AC running smoothly. It’s easy to install and fits popular models like GeneralAire AC1 and Carrier 31MF020.
Ready to Purchase?
2. GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter, Actual Size:19 5/8″ x 24 3/16″ x 4 15/16″ – Case of 3 Filters

Keep your home’s air clean with the GeneralAire #4551 furnace filter. This pack of 3 filters fits perfectly in your system. They are made in the USA and built to last.
These filters have a MERV 11 rating, trapping small particles like dust and pollen. The exact size matches the GeneralAire 4501, so installation is easy.
| Pros | Cons |
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Perfect For:
This GeneralAire #4551 furnace filter is perfect for homeowners who want clean, healthy air in their homes. It’s easy to install and fits perfectly in compatible systems, ensuring efficient filtration for a comfortable living space.
Ready to Purchase?
3. GeneralAire # 4541 MERV 11 for # GF 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8″ x 24 3/16″ x 4 15/16″ Case of 3 Filters- MEASURE CAREFULLY BEFORE ORDERING !

The GeneralAire #4541 MERV 11 furnace filter is designed for the #GF 4511 ReservePro system. It fits 16x25x5 inch furnaces, but measure carefully before ordering. This case includes three filters for your convenience.
This filter has a MERV 11 rating, which means it traps small particles like dust and pollen. It helps keep your air clean and improves indoor air quality.
The actual size is 15 5/8″ x 24 3/16″ x 4 15/16″. Make sure it matches your furnace before buying. Proper fit ensures the filter works efficiently and effectively.
| Pros | Cons |
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Perfect For:
This GeneralAire #4541 MERV 11 filter is perfect for homeowners who need a reliable replacement for their 16x25x5 furnace. Measure carefully before ordering to ensure a perfect fit.
Ready to Purchase?
4. GeneralAire # 4541 MERV 11 for # GF 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8″ x 24 3/16″ x 4 15/16″ Case of 2 Filters – MEASURE CAREFULLY BEFORE ORDERING !

The GeneralAire #4541 MERV 11 furnace filter is designed for the #GF 4511 ReservePro system. It comes in a case of 2 filters, each with an actual size of 15 5/8″ x 24 3/16″ x 4 15/16″. Measure carefully before ordering to ensure the right fit!
This filter is MERV 11 rated, meaning it traps small particles like dust and pollen. It improves indoor air quality and extends the life of your HVAC system.
Perfect for homes or offices, these filters are easy to install and built to last. Check your measurements to avoid any mistakes and enjoy cleaner air with this reliable product.
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Perfect For:
This GeneralAire #4541 MERV 11 filter is perfect for homeowners with a 16x25x5 furnace. It’s easy to install and keeps your air clean. Measure carefully before ordering to ensure the perfect fit!
Ready to Purchase?
5. Generalaire 6FM2025 Reservepro 4551 Air Filter-20x 25x 5-Genuine OEM Replacement for Old 4501

The Generalaire 6FM2025 Reservepro 4551 Air Filter is a genuine OEM replacement for older models. It fits specific systems, not Lennox or Honeywell. Measure carefully before buying.
This filter has a MERV 11 rating and GFI #4551. Its nominal size is 20” x 25” x 5”. Replace it every 6 months for best results.
It works with Source 1, Trion, Skuttle, and Ultravation systems. The actual dimensions are 24-1/4″ x 19-5/8″ x 4-15/16″. A 0.25-inch gasket is included on the top and bottom.
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Perfect For:
The Generalaire 6FM2025 Reservepro 4551 Air Filter is perfect for homeowners who need a reliable, high-quality air filter. It’s ideal for those with specific HVAC systems that require a 20x25x5 filter and want clean, fresh air in their homes.
Ready to Purchase?
6. MERV 11 4001 Filter for GeneralAire 12758 for AC1, AC22, AC3, Carrier 31MF, and Bryant® 902BX (1)

The MERV 11 4001 Filter is a high-quality replacement for your air conditioning system. It fits GeneralAire 12758, AC1, AC22, AC3, Carrier 31MF, and Bryant® 902BX models.
This filter uses MERV 11 technology to capture small particles like dust, pollen, and pet dander. It helps improve indoor air quality and keeps your system running smoothly.
Easy to install, long-lasting, and effective. A great choice for cleaner, healthier air.
| Pros | Cons |
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Perfect For:
This MERV 11 filter is perfect for homeowners who want clean, fresh air. It’s easy to install and works with GeneralAire, Carrier, and Bryant systems.
Ready to Purchase?
7. OEM GeneralAire 990-13 Evaporator Pad Media Filter for 709 990 1040 1042 1137 SL16

The Generalaire 990-13 Evaporator Pad is a single filter designed for maximum water distribution. Its aluminum material is enclosed in a heavy wire frame for durability. This super absorbent pad fits specific Generalaire models.
It measures 9 3/4″W x 11 3/4″H x 1 1/2″D and works with SL-16, 1137, 709, 1040, and 1042 models. Note: This is a single filter, not a 2-pack.
| Pros | Cons |
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Perfect For:
The OEM GeneralAire 990-13 Evaporator Pad Media Filter is perfect for homeowners who own Generalaire models SL-16, 1137, 709, 1040, or 1042. It’s a single filter, not a pack, designed to maximize water distribution and keep your system running smoothly.
Ready to Purchase?
8. GeneralAire ReservePro # 4556 20″ x 20″ x 5″ Air filter, MERV 11-6FM2020 (2-Pack) For MAC2020- and Replacement for Air Bear

The GeneralAire ReservePro # 4556 is a 20″ x 20″ x 5″ air filter designed to keep your indoor air clean. It comes in a 2-pack, offering great value for your money.
This filter has a MERV 11 rating, ensuring it captures small particles like dust and pollen. It fits MAC2020- systems and replaces Air Bear 259112-103 filters.
Before ordering, measure your old filter carefully. The actual size is 19 3/4″ x 20 5/8″ x 4 15/16″. This filter is not for Honeywell systems.
| Pros | Cons |
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Perfect For:
The GeneralAire ReservePro # 4556 is perfect for homeowners who need a reliable air filter replacement. It’s ideal for those with Air Bear systems and fits 20″ x 20″ x 5″ frames. Measure your old filter to ensure a perfect match.
Ready to Purchase?
9. GeneralAire 4541 Furnace Filter | Actual Size 15 5/8″ x 24 3/16″ x 4 15/16.” (16x25x5) | Replaces Part # 4511 | MERV 11 | Pack of 2

Keep your air clean with the GeneralAire 4541 Furnace Filter. This MERV 11 filter captures dust, pollen, and other particles. It comes in a pack of 2 for convenience.
The filter fits specific models like GeneralAire MAC 1400 and Trion Air Bear Supreme 1400. It also works with Source1, Skuttle, and Ultravation systems. Check compatibility before buying.
Breathe easier with this high-quality filter. It has a nominal size of 16x25x5 and an actual size of 15 5/8″ x 24 3/16″ x 4 15/16″. Replace your old filter with this genuine GeneralAire product.
| Pros | Cons |
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Perfect For:
This product is perfect for homeowners who need a reliable furnace filter replacement. It’s ideal for those with GeneralAire, Trion, Source1, Skuttle, or Ultravation systems. If you want clean air and a perfect fit, this MERV 11 filter is for you.
Ready to Purchase?
10. GeneralAire # 4551 20x25x5 furnace filter,-Exact Dimensions are 19 5/8″x 24 3/16″x 4 15/16″- Please Measure Carefully Before Ordering !-case of 2 filters

The GeneralAire #4551 furnace filter comes in a pack of 2. It fits 20x25x5 inch slots but measures slightly smaller. Always check your size before buying!
This filter is a Merv 11 model, offering higher efficiency than older Merv 10 filters. It’s a great upgrade for cleaner air in your home.
The exact dimensions are 19 5/8″x 24 3/16″x 4 15/16″. It replaces the Reservepro #4501 and other brands with the same size. Measure carefully to ensure a perfect fit!
| Pros | Cons |
|---|---|
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Perfect For:
This GeneralAire #4551 furnace filter is perfect for homeowners who need a higher efficiency Merv 11 filter to replace their old Merv 10 filters. It’s also ideal for those with Reservepro #4501 or similar models, as long as they measure carefully to ensure the exact dimensions of 19 5/8″x 24 3/16″x 4 15/16″ match their needs.
Ready to Purchase?
Buying Guide
Generalaire filters keep your home’s air clean and fresh. Choosing the right one is easy with this guide.
Factors to Consider When Buying Generalaire Filters:
– Size: Measure carefully before buying. Filters come in various sizes, and the exact dimensions must match your system for a perfect fit.
– MERV Rating: Look for a MERV 11 rating for high-quality filtration. It traps small particles like dust and pollen, improving indoor air quality.
– Compatibility: Check if the filter fits your specific HVAC model. Not all filters work with every system, so verify compatibility first.
– Pack Size: Filters come in packs of 1, 2, or 3. Buying in bulk can save money and ensure you always have a replacement ready.
– Installation: Choose filters that are easy to install. Some come collapsed and expand into your existing frame, while others fit directly.
– Durability: Look for filters built to last. Genuine OEM replacements often offer better quality and longer lifespan.
– Replacement Frequency: Replace filters every 6 months for best results. Some models may require more frequent changes based on usage.
Engaging Experience:
With the right Generalaire filter, you’ll notice cleaner air and a more efficient HVAC system. Follow this guide to make a smart choice and enjoy healthier indoor air every day.