Top 10 Best 18x24x1 air filter in 2026

Last Updated - 6/20/2026

🏆Best Choice

Simply

Simply 18x24x1 Air Filter, Merv 8, MPR 600, 6 Pack, For Home AC Furnace & HVAC (Actual Size: 17.75"x23.75"x0.75") DUST, Pet, & Allergy Control

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Universally Compatible: Measuring 18" x 24" x 1", with an actual size of 17.75"x23.75" x 0.75", Simply Filters works with almost any brand. Comparable to 3M Filtrete MPR 600, Filterbuy AFB Silver, and Honey well FPR 5.
•Cleaner Air Everywhere: Our filters capture dust, mold, pet dander, and pollen in homes, offices, schools, hospitals, and commercial spaces, trapping 90% of airborne particles, promoting a healthier living environment with clean and fresh indoor air.
•Advanced Pleated Technology: With a higher pleat count than most retail, our meticulously crafted filters offer superior capture coverage, optimizing airflow and efficiency.
•Long-lasting Filtration & Easy Installation: Enjoy up to 3 months of resilient filtration. Hassle-free replacement for air conditioning units or HVAC systems. Follow airflow arrows and insert into the filter slot for central units or return grilles.
•Made in USA: Our filters are made using 100% American components, including recycled materials, ensuring superior performance and quality. Experience exceptional filtration and support local manufacturing.

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$39.92

$50.99

-22%

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Filtrete

Filtrete 18x24x1 Air Filter, MPR 300, MERV 5, Clean Living Basic Dust 3-Month Pleated 1-Inch Air Filters, 6 Filters

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 6-pack of 3-month pleated Filtrete 18x24x1 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 17.81 x 23.81 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
•SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$39.99

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Filtrete

Filtrete 24x24x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 23.81 x 23.81 x 0.81 in)

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated Filtrete 24x24x1 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
•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
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$21.88

$33.35

-34%

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Filtrete

Filtrete 18x24x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 17.81x23.81x0.81 in)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 4-pack of 3-month pleated Filtrete 18x24x1 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
•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
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$49.99

$59.75

-16%

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Filtrete

Filtrete 18x24x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 17.81x23.81x0.78 in)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated Filtrete 18x24x1 MERV 12 MPR 1500 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
•COUNTLESS MICROPARTICLES: With a 1500 MPR and MERV 12 rating, as well as a 54% small particle capture rate (1), 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
•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
•SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$43.99

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Filtrete

Filtrete 24x24x1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 23.81x23.81x0.78 in)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated 1” Filtrete 24x24x1 MPR 1900 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 23.81 x 23.81 x 0.78
•TOP PICK: Selected by The New York Times Wirecutter for its ability to clean the air of ultrafine particles without straining your HVAC system.
•EXCLUSIVE TECHNOLOGY: HVAC filter designed with Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through
•HIGHEST AIRFLOW: Filtrete MPR 1900 Air Filters deliver better airflow than any other brand’s residential 1-in retail MERV 13 filters, based on California Energy Commission claimed data as of 1/29/2030
•CAPTURES MICROPARTICLES: AC filter with a 1900 MPR and MERV 13 rating, as well as a 62% microparticle capture rate, your Filtrete Filter will help capture many microparticles between 0.3 and 1 micron from the air passing through it
•CERTIFIED: This furnace filter is certified asthma and allergy-friendly (1) and helps capture bacteria, viruses, smoke, and smog particles from the air passing through your filter
•VERSATILE USES: Works for changing any air filter in your furnace, air conditioner/heating system or HVAC system; for optimal performance, change your filter at least once every 90 days
•CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
•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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$37.13

$45.99

-19%

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Filtrete

Filtrete 18x24x1 Air Filter, 3M MERV 1 HVAC AC Furnace Filter Replacement, 6-Pack (Actual Size 17.81x23.81x0.88 in)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Clean Home Environment - The Filtrete 18x24x1 HVAC Filter is designed for residential use. It traps unwanted particles in your home's air, promoting a cleaner and fresher living space.
•Easy 3-Month Filter Replacement - For optimal performance of your furnace, air conditioner, or HVAC system, change your filter at least every 90 days. A dirty filter slows air flow and makes the system work harder to keep you warm or cool, wasting energy.
•Well-Structured - Designed with Filtrete's exclusive 3-in-1 technology, the AC filter pulls in and traps unwanted particles, allowing cleaner airflow. These furnace filters 18x24x1 capture more particles than fiberglass air filters.
•Highly Efficient - Being Merv 1, this filter will provide extra deep filtration to help you maintain optimal air quality in your home.
•Get Notified When A Change is Needed - Create a change countdown in the Filtrete Smart app. Use the app to scan the barcode on your air conditioner filter's packaging, and choose 30, 60, or 90 days for your replacement countdown. You’ll get a notification to change your 18x24x1 furnace filter when the lifespan is up.

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$35.90

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Torjim

Torjim 18x24x1 Air Filter-MERV8, Washable & Reusable Electrostatic AC/HVAC Furnace Filter, Permanent Air Filter, Breathe Fresher, Easy Install

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•【Long-lasting & Economical】 Our Torjim electrostatic air filter is designed for durability. Constructed with an aluminum frame, it withstands strong winds without deforming or breaking. By opting for a reusable filter that can be easily cleaned, you're not only preventing resource wastage and environmental pollution but also lowering your long-term usage costs
•【Maintain Fresh Air】Featuring pleated layers, our Torjim air filter excels in particle capture compared to other market filters. It effectively absorbs up to 92% of pollen, pet hair, ensuring sustained high filtration performance over an extended duration
•【Effortless Installation & Upkeep】Installing our Torjim air filter is a straightforward task. Simply insert it into the slot of your furnace, HVAC, or AC system. When cleaning is due, just wash it with water and a mild detergent. The filter naturally air dries and is ready for reinstallation. We recommend cleaning every 3 months
•【Universal Compatibility】Our Torjim air filter seamlessly integrates with a diverse array of furnace, HVAC, and AC systems. This ensures you won't encounter any compatibility issues, simplifying the process of filter replacement whenever needed
•【Satisfaction Guaranteed】We will Provide 12 Months of Free Warranty, and Lifetime Professional Customer Service. Any questions, Feel Free to Contact our Customer Service Staff

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$39.99

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Generic

3-Pack 18x24x1 Air Filter MERV 8, Pleated HVAC AC Furnace Air Filters Replacement (Actual Size 17.75 x 23.75 x 0.75 in) up to 90-days per Filter, Works in furnaces, HVAC, wall and ceiling vents

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•PACK CONTENTS: Set of 3 pleated HVAC air filters designed for residential and commercial heating and cooling systems
•FILTRATION RATING: MERV 8 / FPR 5 Rated filters effectively capture dust, pollen, and common household particles
•COMPATIBILITY: Universal design works with most standard furnaces, air conditioning units, and HVAC systems with matching size requirements
•INSTALLATION: Easy to install in wall vents, ceiling vents, and central air return locations for improved air circulation
•MAINTENANCE: Regular replacement every 60-90 days recommended for optimal system performance and air flow efficiency

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$24.95

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Flanders

E-Z flow II 18x18x1 Air Filter Pack of 12

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•EZ Flow II Spun Fiberglass Disposable Furnace Filter.
•Flat Panel.
•No Metal Media Retainers.
•Up To MERV Rating 4.
•30 Day Filter.

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$41.49

$44.95

-8%

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