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Best Furnace Filters Deals of Nov 2026

Updated November 10, 2026·Our site contains affiliate links for which we may be compensated.

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Amazon Basics

Amazon Basics 16x20x1 Air Filter 6-Pack, MERV 8 AC Furnace Filters, Allergen Control , Removes Dust, Lint and Pollen, Electrostatic (Actual Size: 15.75" x 19.75" x 0.75")

SIZE & COMPATIBILITY: Nominal 16x20x1 (Actual 15.75 x 19.75 x 0.75 in). Select nominal size based on your current filter's frame or measurements. Fits standard furnaces, ACs & HVAC return grilles

ENHANCED AIR QUALITY: Merv 8 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home

IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear

DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit

ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns

CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days

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Filtrete

Filtrete 16x25x1 Air Filter, MERV 5, MPR 300, 6 HVAC Filters | Basic Dust & Lint, 3-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow (Act. Size 15.69x24.69x0.81 in)

16x25x1 AIR FILTER FOR FURNACE & AC SYSTEMS - Filtrete MERV 5 furnace filters designed for standard HVAC systems. Each 6-pack includes filters with actual dimensions 15.69" x 24.69" x 0.81." Compatible with furnace and air conditioner units requiring 16x25x1 size filters for whole air filtration

MAKE YOUR HOME YOUR SANCTUARY: 6-pack of 3-month pleated Filtrete 16x25x1 MPR 300 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment

DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 15.69 x 24.69 x 0.81

EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through

COUNTLESS PARTICLES: With a 300 MPR and MERV 5 rating, your Filtrete Filter will help capture many particles from the air passing through it

VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days

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Filtrete

Filtrete 20x25x5 Air Filter, Fits Lennox, MERV 11, MPR 1000, 2 HVAC Filters | Allergen Defense, 12-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow, (Act. Size 19.63x24.75x4.31 in)

DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 19.63 in x 24.75 in x 4.31 in, This item is a 2-pack of 12-month Filtrete Air Filters

DESIGNED TO FIT: Lennox brand media air cleaners

MAKE YOUR HOME YOUR SANCTUARY: 1000 MPR + MERV 11 rating helps capture up to 2X more microparticles than MERV alone(2)

EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through

CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 4-inch filter at least once every 12 months

SMART APP: Use the Filtrete Smart App (iOS or Android) to set 90-, 180- or 365-day reminders to change your air filter

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Filtrete

Filtrete 16x25x1 Air Filter, MERV 11, MPR 1000, 4 HVAC Filters | Allergens & Pet Dander, 3-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow, (Act. Size 15.68x24.68x0.81 in)

MAKE YOUR HOME YOUR SANCTUARY: 4-pack of 3-month pleated Filtrete 16x25x1 MERV 11 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment

EXCLUSIVE TECHNOLOGY: Designed with Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through (Compared to MERV 11 minimum filter requirements; microparticles are 0.3 – 1.0 in size)

COUNTLESS MICROPARTICLES: With a 1000 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles from the air passing through it

CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days

VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system

SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter

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Filtrete

Filtrete 16x25x1 Air Filter, MERV 11, MPR 1000, 2 HVAC Filters | Allergens & Pet Dander, 3-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow, (Act. Size 15.68x24.68x0.81 in)

MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated Filtrete 16x25x1 MERV 11 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment

EXCLUSIVE TECHNOLOGY: Designed with Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through (Compared to MERV 11 minimum filter requirements; microparticles are 0.3 – 1.0 in size)

COUNTLESS MICROPARTICLES: With a 1000 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles from the air passing through it

CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days

VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system

SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter

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Filtrete

Filtrete 16x25x4 Air Filter, MERV 11, MPR 1000, 2 HVAC Filters | Allergen Defense, 12-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow, (Act. Size 15.88x24.56x4.31 in)

DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 15.88 in x 24.56 in x 4.31 in, This item is a 2-pack of 12-month Filtrete Air Filters

DESIGNED TO FIT: Honeywell and Lennox brand media air cleaners

MAKE YOUR HOME YOUR SANCTUARY: 1000 MPR + MERV 11 rating helps capture up to 2X more microparticles than MERV alone(2)

EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through

CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air

RECYCLED CONTENT: Verified to contain at least 50% recycled content by GreenCircle Certified, a third-party auditor

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 4-inch filter at least once every 12 months

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Aprilaire.

AprilAire 213 Replacement Filter, MERV 13, 20x25x4 Whole-House Air Filter | AC & HVAC System Media, Self-Seal Technology, Allergen Reduction, 12-Month Life, Made in USA

For Allergy Sufferers and Homes With Pets – Recommended for allergen removal: traps dust, pollen, mold spores, bacteria, pet dander, and dust mites as air passes through your HVAC system, which reduces your cleaning time at home

Fit AprilAire Purifiers Only – For AprilAire Whole House Air Purifiers 1210, 1620, 2210, 2216, 3210, 4200, and 2120 or 2200 with Upgrade Kit 1213. Nominal 20x25x4 size.

MERV 13 Filtration – Removes up to 97% of common allergens and 92% of viruses* to improve Indoor Air Quality at home. *Virus performance results based on controlled testing in accordance with ASHRAE 52.2 test standard using the MS-2 virus.

Advanced Purification – Removes 15% more harmful particles than the minimum MERV 13 requirement**. **Harmful particles defined as 0.30 to 1.0μm. Testing was verified by 3rd party lab. All results follow ASHRAE 52.2 2017 Testing Method.

Change Once a Year – 12-month filter lasts up to 2X longer^ for fewer replacements and less system strain, saving you money. ^Performance results based on controlled testing in accordance with ASHRAE 52.2 2017 test procedure. MERV 11/13 Filters only.

Genuine, Not Off-Brand – Patented Self-Seal Technology reduces air bypass, so particles are captured instead of getting through gaps. Off-brand filters do not meet AprilAire standards for airflow, filtration, and efficiency.

Easy to Install – The patented Interlock Rail System requires no assembly and no cardboard or metal reinforcements: unbox, expand, and insert the filter into your AprilAire Whole-House Air Purifier

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Aprilaire.

AprilAire 413 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x25x4 Air Filter (Pack of 1)

Genuine AprilAire 413 Filters are engineered to the exact specifications of your AprilAire Air Purifier, delivering superior filtration, a perfect airtight fit and seal, and the best overall system protection. To maintain peak performance, always choose certified AprilAire Replacement Filters.

The AprilAire 413 removes up to 97% of common allergens and 92% of viruses* *Virus performance results based on controlled testing in accordance with ASHRAE 52.2 test standard using the MS-2 virus

Advanced Purification – The AprilAire 413 Replacement Filter removes 15% more harmful particles compared to minimum MERV 13 requirement* *Testing was verified by 3rd party lab. All results follow ASHRAE 52.2 2017 Testing Method.

Energy Efficiency – The AprilAire 413 lasts up to 2X longer* for fewer replacements and less strain on your HVAC system, saving you money

Long Filter Life – Easy maintenance with 12-month filter life. Change the AprilAire 413 Filter annually to maintain peak performance.

Buy With Confidence – Genuine AprilAire 413 Air Filters are designed and made in the USA by AprilAire, the leader in Indoor Air Quality solutions for the home since 1954

Proud Partner of American Lung Association in support of its mission to save lives by improving lung health and preventing lung disease. The American Lung Association does not endorse any product, device, or service.

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Filterbuy 16x25x1 Air Filter MERV 8 Dust & Allergy Defense (6-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.50 x 24.50 x 0.75)

UNIVERSAL COMPATIBILITY: 16x25x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 15.50" x 24.50" x 0.75")

MERV 8 PERFORMANCE: Protect your home or business from pollen, lint, mold, and more with MERV 8 synthetic media (comparable with MPR 700 & FPR 5) that captures 90% of dust without restricting air flow

LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for optimal performance)

SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures

MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes

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Filtrete

Filtrete 16x25x5 Air Filter, Fits Lennox, MERV 11, MPR 1000, 2 HVAC Filters | Allergen Defense, 12-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow, (Act. Size 15.63x24.75x4.31 in)

DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 15.63 in x 24.74 in x 4.31 in, This item is a 2-pack of 12-month Filtrete Air Filters

DESIGNED TO FIT: Lennox brand media air cleaners

MAKE YOUR HOME YOUR SANCTUARY: 1000 MPR + MERV 11 rating helps capture up to 2X more microparticles than MERV alone(2)

EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through

CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air

RECYCLED CONTENT: Verified to contain at least 50% recycled content by GreenCircle Certified, a third-party auditor

CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 4-inch filter at least once every 12 months

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Our #1 Pick Today

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Amazon Basics

Amazon Basics 16x20x1 Air Filter 6-Pack, MERV 8 AC Furnace Filters, Allergen Control , Removes Dust, Lint and Pollen, Electrostatic (Actual Size: 15.75" x 19.75" x 0.75")

SIZE & COMPATIBILITY: Nominal 16x20x1 (Actual 15.75 x 19.75 x 0.75 in). Select nominal size based on your current filter's frame or measurements. Fits standard furnaces, ACs & HVAC return grilles

ENHANCED AIR QUALITY: Merv 8 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home

IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear

DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit

ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns

CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days

Details & specs

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Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Furnace Filters deals are available from: Amazon, starting from $19.79.

The biggest discount we found is 25% on Filtrete 16x25x1 Air Filter, MERV 5, MPR 300, 6 HVAC Filters | Basic Dust & Lint, 3-Month AC/Furnace Filters, Cleaner Air, Reliable Airflow (Act. Size 15.69x24.69x0.81 in) (BD01-6PK-1E) at Amazon.

The lowest price we found is $19.79 while the highest is $64.99. Prices for the best Furnace Filters deals average at $43.73.

Compare prices across stores, find real deals, and get an email when the products you want drop in price.

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