Best Furnace Filters(Updated July 2025)

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Product image of Filtrete 20x25x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.69x24.69x0.81 in)

Filtrete 20x25x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.69x24.69x0.81 in)

(179.83K)
$39.99
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Buyer Rating10
Value for money
Works well
Filter quality
Quality
Air cleanliness
Ease of installation

Bought by 132 people today

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Product image of 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)

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)

(149.4K)
$32.92
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Buyer Rating9.7
Value for money
Works well
Air quality
Quality
Ease of installation
Catching capacity

Bought by 156 people today

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Product image of Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control

Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control

(41.81K)
$34.95$38.97
Amazon's Choice badge
Buyer Rating9.5
Value for money
Quality
Filter quality
Works well
Air quality
Ease of installation

Bought by 186 people today

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Product image of Filtrete 20x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 19.688 x 24.688 x 0.84 in)

Filtrete 20x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 19.688 x 24.688 x 0.84 in)

(52.62K)
$21.99$33.35
Amazon's Choice badge
Buyer Rating9.3
Works well
Quality
Value for money
Air quality
Ease of installation
Allergen defense

Bought by 185 people today

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Product image of Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 19.50 x 0.75 Inches)

Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 19.50 x 0.75 Inches)

(46.75K)
$38.46
Amazon's Choice badge
Buyer Rating9
Value for money
Work well
Filter quality
Quality
Ease of installation
Air quality

Bought by 118 people today

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Guides

Filtration

Complete Guide to Furnace Filters

Find the best furnace filter to improve air quality and system efficiency.