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Furnace Filters

Best Furnace Filters

Name: Filterbuy 20x25x1 Air Filter MERV 8 Essential Dust & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.50 x 24.50 x 0.75)
Brand: Filterbuy
Price: 37.96 USD
Availability: InStock

From leading brands and best sellers available on the web.

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Ash Harbor

Tropical Spa Aromatherapy 4 Pack - Floral Filter Fresh Whole Home Air Freshener for Filter - HVAC Vent Air Freshener for Home AC - Whole House Air Fresheners for Home, Office, & More by Ash Harbor

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Filterbuy

10%OFF

Filterbuy 16x20x1 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 15.50 x 19.50 x 0.75)

9.8

score

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Filterbuy

10%OFF

Filterbuy 16x25x1 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 15.50 x 24.50 x 0.75)

9.7

score

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Filtrete

20%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)

9.5

score

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Filterbuy

10%OFF

Filterbuy 20x25x4 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.50 x 24.50 x 3.63)

9.2

score

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Filterbuy

10%OFF

Filterbuy 16x25x4 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 15.50 x 24.50 x 3.63)

9.0

score

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Filtrete

20%OFF

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)

8.7

score

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Filtrete

23%OFF

Filtrete 14x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 13.781 x 19.781 x 0.84 in)

8.4

score

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Filtrete

15%OFF

Filtrete 20x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 19.69 x 19.69 x 0.81 in)

Aprilaire

6%OFF

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

7.9

score

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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.

Best Furnace Filters

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Buying Guide for the Best Furnace Filters