Advertising Disclosure

Best furnace filters - July 2025

Last Updated - July 25, 2025

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

AIRx Filters

AIRx Filters 16x25x5 MERV 16 Furnace Air Filter (2-Pack), compatible with replacement for Honeywell FC100A1029, Lennox X6672, and Carrier FILXXCAR0016 Media Filters

AIRx Filters

$119.95

More Details
Main highlights
- Wide System Compatibility: This AIRx Filters air filter is a direct compatible with replacement for an extensive range of popular 16x25x5 models, including Honeywell FC100A1029, Lennox X6672, and Carrier FILXXCAR0016.
- Verify Your Dimensions: This filter has a nominal size of 16" x 25" x 5". The actual, precise dimensions are 15 3/4" x 24 3/4" x 4 3/8". Please measure your current filter or housing to guarantee a perfect fit.
- Maximum Filtration Performance: Achieve the highest standard of clean air with a MERV 16 rating, capturing over 95% of airborne particles including fine dust, pet dander, bacteria, and virus carriers to protect your home.
- Convenient 2-Pack Value: Stock up and save with this two-filter value pack. This ensures you always have your next replacement ready to maintain your home's superior air quality without interruption.
- Advanced Mini-Pleat Design: Features high-efficiency "mini-pleat" construction that maximizes the filter's surface area. This technology ensures superior particle capture, a long service life, and optimal airflow for your HVAC system.
$119.95
2
15% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Filtrete
15% Off

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Honeywell & AprilAire Space-Gard, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 19.88 x 24.63 x 4.31)

Filtrete

$97.99

$116.10
(15% Off)

More Details
Main highlights
$97.99
$116.10 (15% Off)
3
Best Value
26% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Filtrete
26% Off

Filtrete 16x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 15.69 x 24.69 x 0.81 in)

Filtrete

$43.98

$59.75
(26% Off)

More Details
Main highlights
- 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
- MAKE YOUR HOME YOUR SANCTUARY: 4-pack of 3-month pleated 1” Filtrete 16x25x1 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 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 15.69 x 24.69 x 0.81
- COUNTLESS PARTICLES: With a 1000 MPR and MERV 11 rating, your air filter will help capture many microparticles from the air passing through it
- CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
- CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air
$43.98
$59.75 (26% Off)
4
20% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Filtrete
20% Off

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.88 x 24.63 x 4.31)

Filtrete

$53.95

$67.99
(20% Off)

More Details
Main highlights
- SMART APP: Use the Filtrete Smart App (iOS or Android) to set 90-, 180- or 365-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
- MAKE YOUR HOME YOUR SANCTUARY: MPR 1550 + MERV 12 AC Furnace Air Filter helps capture 50% of small particles from the air passing through it. (1)
- 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 19.875 in x 24.625 in x 4.31 in, This item is a 2-pack of 12-month Filtrete Air Filters
- DESIGNED TO FIT: Honeywell and Aprilaire Space-Gard brand media air cleaners
- CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 4-inch filter at least once every 12 months
- CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air
$53.95
$67.99 (20% Off)
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Filterbuy

Filterbuy 16x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 3.63 Inches)

Filterbuy

$38.81

$43.12
(9% Off)

More Details
Main highlights
- MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from mold, pollen, and more while trapping 90% of dust particles without impacting air flow
- Industrial grade components are 100% manufactured in the United States and designed with recyclable materials
- High quality construction features an electrostatically charged design with 8 pleats per foot that captures more harmful particles and lasts 3x longer than fiberglass models (replace every 90 days for best performance)
- Easy installation beverage board frames with dual wire backings improve structural integrity and outperform standard cardboard designs by resisting extreme temperatures
- 16x25x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 15.50" x 24.50" x 3.63"), also compatible with White Rodgers (ACM1400M, ACM1400M-108, FR1400M-108, FR1400M-111) and Pro1 IAQ (F1608, F1612, AZ2-V2-GF-M11-041625)
$38.81
$43.12 (9% Off)

Best furnace filters - July 2025

AIRx Filters 16x25x5 MERV 16 Furnace Air Filter (2-Pack), compatible with replacement for Honeywell FC100A1029, Lennox X6672, and Carrier FILXXCAR0016 Media Filters

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Honeywell & AprilAire Space-Gard, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 19.88 x 24.63 x 4.31)

Filtrete 16x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 15.69 x 24.69 x 0.81 in)

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.88 x 24.63 x 4.31)

Filterbuy 16x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 3.63 Inches)

You may also like...

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)

Filtrete 16x25x4 Air Filter, MPR 1000, MERV 11, Allergen Defense 12-Month Deep Pleated 4-Inch Air Filters, 2 Filters

AprilAire 213 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 20x25x4 Air Filter (Pack of 1)

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)

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

Simply 16x25x1 Air Filter, MERV 8, MPR 600, 6 Pack, For Home AC Furnace & HVAC (Actual Size: 15.75"x24.75"x0.75") DUST, Pet, & Allergy Control

Filtrete 16x20x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size15.69x19.69x0.81 in)

Filterbuy 16x25x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 0.75 Inches)

Aerostar 16x25x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC, Furnace & Air Conditioner Filters - Removes Dust, Lint, Mold & Allergy-Causing Pollen

Nordic Pure 16x16x1 (15 3/4 x 15 3/4 x 3/4) Tru Mini Pleat MERV 8 AC Furnace Air Filters - 2.5X More Media for Longer-Lasting, High-Efficiency Filtration - 2 Pack

Sign up and get exclusive special deals