Furnace Filters of 2025

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Last Updated - May 13, 2025

Best Choice

1

Clicked 11 times in the last month

Filtrete
Filtrete 16x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox & Honeywell Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 15.88 x 24.56 x 4.31)

33% Off

9.1 Precision

9.1 Durability

8.9 Easy installation

Why we love it

Captures more particles than fiberglass filters.

Highly recommended for allergen defense.

Long-lasting with a 12-month lifespan.
Main highlights

Effective Allergen Defense
MPR 1000 and MERV 11 rating capture microparticles like pollen and smoke.

Ideal for Allergy Sufferers
Best for homes with pets or smokers, enhancing air quality.

Customer Praised Performance
Highly effective in trapping dust and allergens, visible on used filters.
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9.8

Exceptional

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Value for Money

2

Lennox
X6673 Lennox 20x25x5 Merv 11 Filter Media 2 Pack

9.9 lasts a long time

9.9 Easy installation

9.7 Durability

Why we love it

Improves air quality efficiently.

Fits Lennox systems perfectly.

Easy and convenient to replace.
Main highlights

Efficient Air Filtration
The X6673 Lennox MERV 11 filter effectively captures airborne particles, improving indoor air quality.

Perfect Fit for Lennox Systems
Designed specifically for Lennox furnaces, ensuring compatibility and optimal performance.

Great Value and Easy Installation
Customers appreciate the value for money and the ease of replacing filters.
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9.7

Exceptional

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3

Filtrete
Filtrete 14x24x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size13.81x23.81x0.81 in)

Why we love it

Captures numerous airborne particles.

Compatible with multiple HVAC systems.

Highly praised for dust trapping.
Main highlights

Effective Air Filtration
The Filtrete 14x24x1 AC Furnace Air Filter captures unwanted particles, ensuring cleaner, fresher air in your home.

Versatile HVAC Compatibility
Ideal for use in furnaces, air conditioners, and HVAC systems for optimal air quality maintenance.

Customer Praise for Performance
Praised for effectively trapping dust and allergens, improving home air quality.
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9.6

Exceptional

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4

Filtrete
Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)

12% Off

8.7 Durability

8.4 worth the money

8.2 Easy installation

Why we love it

Captures many airborne particles.

Compatible with multiple furnace brands.

Convenient 12-month filter life.
Main highlights

Efficient Air Filtration
The Filtrete 20x25x4 Air Filter uses 3-in-1 technology for capturing particles, ensuring cleaner air.

Versatile Furnace Compatibility
Ideal for Honeywell and Lennox furnaces, fitting both 4 and 5 filter slots.

Positive Customer Feedback on Durability
Praised for sturdy construction and effective air cleaning in customer reviews.
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9.4

Excellent

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5

Filtrete
Filtrete 20x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.63 x 24.75 x 4.31 in)

9.1 Easy installation

8.4 Durability

8.0 worth the money

Why we love it

Highly efficient particle capture.

Perfect fit for many systems.

Improves indoor air quality.
Main highlights

Efficient Air Filtration
Captures more particles like pollen, pet dander, and smoke.

Perfect for Residential Use
Ideal for Lennox furnaces and Honeywell Electric furnace replacements.

Customer Praised Fit
Fits perfectly in various HVAC systems, enhancing air quality.
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9.1

Excellent

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6

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

9.9 Easy installation

9.7 Durability

9.7 Sheerness

Why we love it

Excellent filtration for allergens.

Easy installation process.

Durable with a six-month lifespan.
Main highlights

Optimized Performance with MERV 13
The AprilAire 413 filter offers superior filtration, capturing dust, pollen, and allergens to enhance home air quality.

Ideal for Allergy-Prone Homes
Perfect for homes with pets or allergy sufferers, improving air quality by trapping allergens and dust.

Exact Fit and Longevity
Customers praise its precise fit and durability, lasting up to six months even in pet-friendly homes.
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8.9

Very Good

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7

Filterbuy
Filterbuy 20x25x5 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, & More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

32% Off

9.5 lasts a long time

9.5 Easy installation

9.3 Durability

Why we love it

Traps 90% of airborne particles.

Fits multiple HVAC systems.

Durable and long-lasting.
Main highlights

Efficient Particle Filtration
MERV 8 rating traps 90% of dust, pollen, and more.

Versatile Compatibility
Ideal for Honeywell, Lennox, Carrier, and more HVAC systems.

Reliable Customer Service
Praised for excellent after-sales support and reasonable pricing.
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8.6

Very Good

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8

Filterbuy
Filterbuy 16x24x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 23.38 x 0.75 Inches)

9.9 Easy installation

9.7 Durability

9.5 worth the money

Why we love it

High efficiency: Traps 90 of airborne particles.

Durable: Prolongs lifespan 3x.

US made: Recyclable materials dual wire backing.
Main highlights

Key Features
MERV 8 rating traps 90% of airborne particles, electrostatic pleated design, industrial-grade frame, made with recyclable materials in the USA.

Ideal Use Cases
Perfect for households needing to reduce dust, pollen, and improve air quality without compromising airflow in HVAC systems.

Customer Praise
Highly praised for its durability, efficiency in trapping particles, and noticeably improving air quality indoors.
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8.5

Good

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9

Filtrete
Filtrete 16x25x1 AC Furnace Air Filter, MERV 8, MPR 700, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 15.69 x 24.69 x 1.56 in )

9.5 Easy installation

8.4 Durability

8.2 worth the money

Why we love it

Affordable 4-pack saves money compared to single purchases.

Versatile use in various HVAC systems.

Exclusive 3-in-1 technology ensures cleaner air.
Main highlights

Make Your Home a Sanctuary
4-pack of Filtrete 16x25x1 MPR 700 AC Furnace Air Filters captures unwanted particles for a cleaner, fresher home environment.

Versatile for Various Systems
Ideal for use in furnaces, air conditioners, heating systems, or HVAC systems. Change every 90 days for optimal performance.

Sturdy Frame and Effective Filtration
Customers frequently praise the filters' sturdy frame and effective particle capture, ensuring durability and cleaner air.
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8.3

Good

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10

Filtrete
Filtrete 16x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 15.63 x 24.74 x 4.31)

9.1 Easy installation

9.1 Durability

8.4 worth the money
Main highlights

SUBSCRIBE AND SAVE: On your first order, simply click on "Subscribe and Save" to set up your delivery schedule and save up to 10% on your orders
SUBSCRIBE AND SAVE: On your first order, simply click on "Subscribe and Save" to set up your delivery schedule and save up to 10% on your orders
RECYCLED CONTENT: Verified to contain at least 50% recycled content by GreenCircle Certified, a third-party auditor
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
MAKE YOUR HOME YOUR SANCTUARY: 1000 MPR + MERV 11 rating helps capture up to 2X more microparticles than MERV alone(2)
FOR RESIDENTIAL use only
EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through
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
CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 5-inch filter at least once every 12 months
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8.2

Good

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Furnace Filters of 2025

1

Filtrete 16x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox & Honeywell Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 15.88 x 24.56 x 4.31)

Why we love it

2

X6673 Lennox 20x25x5 Merv 11 Filter Media 2 Pack

Why we love it

3

Filtrete 14x24x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size13.81x23.81x0.81 in)

Why we love it

4

Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)

Why we love it

5

Filtrete 20x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.63 x 24.75 x 4.31 in)

Why we love it

6

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

Why we love it

7

Filterbuy 20x25x5 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, & More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Why we love it

8

Filterbuy 16x24x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 23.38 x 0.75 Inches)

Why we love it

9

Filtrete 16x25x1 AC Furnace Air Filter, MERV 8, MPR 700, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 15.69 x 24.69 x 1.56 in )

Why we love it

10

Filtrete 16x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 15.63 x 24.74 x 4.31)

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