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10 Best Furnace Filters 2025 in the United States

#1

Winner

9.8 score

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)

15%OFF

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)

Filtrete

9.8 score

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The Filtrete 16x20x1 AC Furnace Air Filter is designed to efficiently capture unwanted particles, making it a solid choice for residential use. With a MERV rating of 5, it effectively attracts larger particles like lint and household dust, enhancing air quality. One of its standout features is the 3M technology that allows for better airflow while trapping these particles, leading to improved heating and cooling system performance. The filters come in a convenient 6-pack, which is great for those who prefer to stock up and change filters every three months.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Filter Size
The 16x24x1 size fits perfectly in HVAC systems, making installation a breeze and allowing for quick filter swaps.
MERV Rating
These filters do an excellent job at capturing dust, pollen, and even smaller particles like pet dander, significantly improving air quality within days.
Material
Despite capturing many particles, these filters do not restrict airflow, allowing the HVAC system to run efficiently without noticeable strain.
Lifespan
Even after a full month of use, the filters remain durable and effective, not clogging up too quickly and built to last.
#2
9.6 score

Filtrete 16x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 15.719 x 24.72 x 0.84 in)

6%OFF

Filtrete 16x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 15.719 x 24.72 x 0.84 in)

Filtrete

9.6 score

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The Filtrete 16x25x1 AC Furnace Air Filter is a solid choice for those looking to improve their home's air quality. With a MERV rating of 11 and a MPR of 1000, it effectively captures a wide range of microparticles, helping to reduce allergens and create a cleaner living space. Its pleated design optimizes airflow while maintaining efficiency, making it suitable for use in furnaces, air conditioners, and HVAC systems.

#3
9.4 score

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

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

Aprilaire

9.4 score

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The AprilAire 213 Replacement Filter is a solid choice for those looking to improve indoor air quality, particularly for allergy sufferers. With a MERV rating of 13, this filter effectively traps a wide range of airborne allergens, including dust, pollen, mold spores, and pet dander, making it ideal for households with allergy sensitivities. Its patented Self-Seal Technology ensures that air passes through the filter more efficiently, minimizing any bypass, which is a significant advantage for maintaining cleaner air in your home. The filter's nominal dimensions of 20 x 25 x 4 inches fit various AprilAire air purifiers, which adds to its versatility for users with compatible models. The installation process is also straightforward, allowing users to easily replace the filter without any need for complicated setups.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Lifespan
They are a bit pricey compared to panel style ones, but you don't change these out as often, balancing the costs.

Top 10 Best Furnace Filters 2025 in the United States

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EconoHome

EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

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#1

Winner

9.8 score

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Filtrete

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)

Filter Size: 16 x 20 x 1
MERV Rating: 5
Material: Polypropylene
Lifespan: 90 days

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15% OFF

Chosen by 1394 this week

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EconoHome

EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

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#2

9.6 score

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Filtrete

Filtrete 16x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 15.719 x 24.72 x 0.84 in)

Filter Size: 15.719 x 24.72 x 0.84 inches
MERV Rating: 11
Material: Electrostatically charged media
Lifespan: three months

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6% OFF
#3

9.4 score

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Aprilaire

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

Filter Size: 20 x 25 x 4 inches
MERV Rating: 13
Material: Polyester

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#4

9.1 score

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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)

Filter Size: 16x25x4
MERV Rating: 11
Material: Polypropylene
Lifespan: 12 months

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34% OFF
#5

8.8 score

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Aprilaire

AprilAire 210 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 20x25x4 Air Filter (Pack of 1)

Filter Size: 20 x 25 x 4 inches
MERV Rating: 11
Material: Synthetic Fiber
Lifespan: 6-12 months

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Related Products

#6

8.5 score

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Filtrete

Filtrete 16x25x1 Air Filter, MPR 2800, MERV 14, Healthy Living Ultrafine Particle Reduction 3-Month Pleated 1-Inch Air Filters, 2 Filters, White

Filter Size: 16x25x1
MERV Rating: 14
Material: Polypropylene
Lifespan: 3 months

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25% OFF
#7

8.2 score

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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)

Filter Size: 16x25x4 inches
MERV Rating: 13
Material: Synthetic Fiber
Lifespan: six months

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#8

7.9 score

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Filtrete

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

Filter Size: 20x25x4
MERV Rating: 12
Material: Polypropylene
Lifespan: 12 months

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8% OFF
#9

7.6 score

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Aprilaire

AprilAire 216 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 16, Allergy, Asthma, & Virus, 20x25x4 Air Filter (Pack of 1)

Filter Size: 20 x 25 x 4 inches
MERV Rating: 16
Material: Synthetic Fiber

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#10

7.3 score

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Aprilaire

AprilAire 410 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 16x25x4 Air Filter (Pack of 1)

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Buying Guide for the Best Furnace Filters

Choosing the right furnace filter is crucial for maintaining good air quality in your home and ensuring the efficient operation of your heating system. The right filter can help reduce allergens, dust, and other particles, making your home healthier and more comfortable. When selecting a furnace filter, consider factors such as filter size, MERV rating, material, and lifespan. Understanding these key specifications will help you make an informed decision that best suits your needs.
Filter SizeFilter size is the physical dimensions of the filter, typically measured in inches (length x width x thickness). It's important because the filter must fit snugly in your furnace to work effectively. Sizes can vary widely, so check your furnace's manual or the existing filter for the correct dimensions. Common sizes include 16x25x1, 20x20x1, and 20x25x1. If the filter is too small, it won't cover the entire intake, allowing unfiltered air to pass through. If it's too large, it won't fit properly. Always measure your current filter or the filter slot to ensure you get the right size.
MERV RatingMERV (Minimum Efficiency Reporting Value) rating measures a filter's ability to capture particles. The higher the MERV rating, the more particles the filter can trap. MERV ratings range from 1 to 20. For residential use, a MERV rating between 8 and 13 is typically sufficient. Lower ratings (1-7) are less effective at capturing smaller particles and are best for basic dust and pollen. Higher ratings (14-20) are used in hospitals and clean rooms but may restrict airflow in residential systems. Choose a MERV rating based on your specific needs, such as allergies or asthma, while ensuring it doesn't impede your furnace's airflow.
MaterialFurnace filters are made from various materials, including fiberglass, pleated paper, and electrostatic media. Fiberglass filters are inexpensive and provide basic filtration, suitable for capturing large particles like dust and lint. Pleated paper filters offer better filtration and can capture smaller particles, making them a good choice for homes with pets or allergies. Electrostatic filters use static electricity to attract and capture particles and are highly effective at improving air quality. Consider your household's specific needs, such as the presence of pets or allergy sufferers, when choosing the filter material.
LifespanThe lifespan of a furnace filter indicates how often it needs to be replaced. This can range from one month to a year, depending on the filter type and usage. Disposable filters, like fiberglass and pleated paper, typically need to be replaced every 1-3 months. High-efficiency filters and electrostatic filters may last longer, up to 6-12 months. Regularly replacing your filter ensures optimal air quality and furnace efficiency. Consider your home's air quality, the presence of pets, and the frequency of furnace use when determining the appropriate filter lifespan for your needs.

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