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While many people worry about outdoor air quality, statistics show that they actually should be more concerned about indoor air quality (IAQ). IAQ is the measure of harmful pollutants discovered within or around your home. The EPA ranks IAQ as one of the top five public health risks.

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Goodman G13MU1625 Replacement Air Filters 3-Pack

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Retail: $329.99

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Filters Fast® Replacement for 3M Filtrete MPR 1550 Allergen, Bacteria & Virus Air Filter (Purple) - 3-Pack

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Retail: $119.99

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GeneralAire GA23 Humidifier Vapor Pad Replacement Part 7923 - 10-Pack

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Retail: $194.69

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GeneralAire R2-0855 Air Cleaner Prefilter Part 4782

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Trion 227833-003 Charcoal Filter

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GeneralAire 4556 6FM2020 MERV11 Air Filter 20x20x5

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GeneralAire 6FM2025 MERV 11 Replacement For GeneralAire 5FM2025

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GeneralAire 4620 HF500 HEPA Filter for AC500

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GeneralAire 6FM2020 MERV 11 Replacement For GeneralAire 5FM2020

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$2,000 Premium Fiberglass Air Filter

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Air filter diagram showing MERV rating guide and filter efficiency standards

A Quick Guide to MERV Ratings

The Minimum Efficiency Reporting Value (MERV) is used by manufacturers to explain how efficient the air filter is at trapping airborne particles. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

MERV 8: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites

MERV 11: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites, Fine Dust, Auto Emissions, Smoke

MERV 13: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites, Fine Dust, Auto Emissions, Smoke, Very Fine Dust, Bacteria

Frequently Asked Questions

Can I use the same air filter for both heat and AC?

Yes, both AC filters and furnace filters are the same thing. We categorize filters based on their intended use to make filter shopping easier for the customer. During the summer months you are more likely to search for AC filters. While during colder winter months you are looking to buy furnace filters. A good tip for remembering when to change your filters is to replace them at the start of each new season.

Which direction does the air filter go?

Always point the arrow on the box in the direction of airflow. If you are unsure the direction of airflow turn on the system fan. Do not remove the old filter before checking airflow as this might allow dirt or debris to escape.

When to change the air filter in your house?

Replace your air filters every 3 months. You may need to replace your filters more frequently depending on air quality. If you are unsure about indoor air quality check the filter monthly. If you notice the filter material is greatly discolored or noticeably dirty change out the filter. Failing to replace air filters as recommended can lead to reduced system efficiency, greater energy costs, and poor air quality.

Which air filter is best for allergies?

If you have respiratory problems caused by pollen, dust, mold, or pet dander a MERV 11 filter can help reduce the severity of ailments caused by allergies. If you are sensitive to smoke from cooking or tobacco a MERV 13 filter is recommended. For many allergy sufferers it is recommended you install filters to process both supply and return air. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

Which air filter is best for my home?

Your choice in air filter should depend on needs. MERV 8 filters are perfect if you have no pets and allergies are not a serious concern. MERV 11 filters are recommended for occasional allergy sufferers and homes with pets. A MERV 13 filter should be used if allergies are a serious concern and there are tobacco smokers in the house.

Where are they made?

Filters Fast® brand air filters are proudly made in America. While the manufacturing location of products can vary from company-to-company, Country of Origin laws require that most products manufactured outside of America bear labeling that tells consumers where the product is made. This label should be visable on the product itself or the packaging in which it arrived.

Are the home air filters electrostatically charged?

Yes, Filters Fast®, Filtrete, Carrier, among many other air filter brands use an electrostatically charged filter media. Fiberglass air filters are far less common today and were never designed to improve air quality, rather they protect HVAC systems from large dirt and debris.

Give the gift of clean air to yourself and your loved ones with high-quality HVAC air filters from Filters Fast. Choosing the right air filter replacement is the key to keeping your system running efficiently, protecting your HVAC equipment, and ensuring cleaner, healthier air throughout your home. With Filters Fast, finding the perfect filter for your household has never been easier.

Why Filters Fast is the Smartest Choice for Air Filter Replacement

When you begin your search for a new air filter from Filters Fast, you’ll recognize the difference right away. From our seemingly endless selection of premium filters to our extensive expertise to our 20 years of experience, you’ll see why so many households trust us to keep their air clean, healthy, and comfortable. And if you ever need guidance along the way, the dedicated Filters Fast support center is always on standby, waiting to answer your questions, offer helpful recommendations, and make sure you find the exact filter your home needs.

Find the Right Replacement Air Filters for Your System

Ready to upgrade your home’s air quality? With our wide range of premium replacement air filters, HVAC air filter replacement is easier than ever. Simply browse by size, brand, MERV rating, or filter type to find exactly what your home needs. With our convenient auto delivery options, you can have fresh filters shipped right on schedule - you’ll never have to worry about forgetting a replacement again. You can also take advantage of our discount filter items to save money while keeping your air clean and your system running smoothly. Start exploring our selection today and enjoy cleaner, healthier air with every breath!

Frequently Asked Questions:

What are the different types of Filters Fast air filters?

Filters Fast provides a wide range of air filter types to help you match your home’s air quality needs and your HVAC system’s requirements. Some of our popular categories include:

Pleated Air Filters for general household use and dependable performance

High-Efficiency MERV Air Filters to capture smaller particles and improve overall indoor air quality

Activated Carbon Filters that help reduce odors from cooking, pets, smoke, and more

Electrostatic Filters that attract and trap particles using static charge

Washable and Reusable Filters for those who prefer an eco-friendly option with a long lifespan

Whole-Home HVAC and Furnace Filters available in multiple sizes to support efficient filtration throughout your home

Are air filters and furnace filters the same thing?

While these two terms are often used interchangeably, furnace filters and air filters do differ in certain ways. Furnace filters are specifically designed for use in your home’s furnace or HVAC system to protect your equipment and improve household airflow. The term “air filters” is a broad one that refers to any filter that’s designed to clean the air, which includes furnace filters, whole-home AC replacement filters, or even air purifier filters. At Filters Fast, we carry every size and type of air filter to meet your one-of-a-kind needs.

How do I know what size air filter I need?

Finding the right air filter size for your home is simple when you shop at Filters Fast. The easiest way is to check your current filter, as the size is usually printed on the frame. If you don’t have the old filter handy, you can measure your system’s filter slot (length X width X depth).

At Filters Fast, we carry a wide selection of common filter sizes, including:

Once you know the size of your filter, you can easily browse filters in the size that fits your system perfectly.

What is the difference between MERV and HEPA filters?

HEPA and MERV air filters are both efficient when it comes to improving your indoor air quality, but they take different approaches to measuring performance. MERV (Minimum Efficiency Reporting Value) ratings indicate how effectively a filter captures particles of various sizes, with higher numbers capturing smaller particles like dust, pollen, and pet dander. HEPA (High-Efficiency Particulate Air) filters meet a strict standard for removing 99.97% of particles as small as 0.3 microns, so they’re ideal for allergy or asthma sufferers. At Filters Fast, we carry both MERV air filters and HEPA options so you can choose the level of filtration that best fits your home, your HVAC system, and your family’s needs.

What are the difference between MERV 8, MERV 11, and MERV 13 air filters?

MERV 8: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites

MERV 11: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites, Fine Dust, Auto Emissions, Smoke

MERV 13: Equipment Protection, Lint and Dust, Pollen, Pet Dander, Mold Spores, Dust Mites, Fine Dust, Auto Emissions, Smoke, Very Fine Dust, Bacteria

What is the best MERV rating for home air filters?

The answer to this question comes down to factors like your household’s air quality needs, the presence of pets or allergy concerns, and your HVAC system’s specifications - there is no one-size-fits-all solution. For most homes, a MERV 8 to MERV 11 filter is ideal. This range captures common airborne particles like dust, pollen, and pet dander and improves indoor air quality without putting unnecessary strain on your HVAC system. Choosing the right MERV rating helps keep your home’s air clean while ensuring your system runs efficiently and safely.

Do HEPA filters work with all HVAC systems?

Not necessarily. HEPA filters provide excellent filtration by capturing very small particles, but their dense construction can restrict airflow in standard residential HVAC systems. Before upgrading to a HEPA filter, be sure to check your system’s specifications or consult your HVAC manufacturer to confirm compatibility.

Are Filters Fast® air filters compatible with all major brands?

Yes! Filters Fast offers a wide range of air filters designed to fit virtually every major HVAC brand. Our selection includes Filters Fast® brand filters, high-quality OEM filters, and other compatible options, so you can always find the right size and type for your system.

Our selection covers all the major brands homeowners rely on, including: