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Air Filter Shield

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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Air Filter FAQ

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

What is air filter MERV rating?

The Minimum Efficiency Reporting Value (MERV) is used by manufacturers to explain how efficent the air filter is at trapping airborne particles. A higher MERV rating means cleaner air but reduced air flow. MERV 8 filters capture 80% of airborn particles like pollen, dust mites, mold spores, and pet dander down to 3 microns in size. MERV 11 air filters capture up to 95% of the above mentioned airborne particles down to 1 micron in size. If you choose a MERV 13 filter expect greatly diminished airflow but improved filtration of bacteria, tobacco smoke, and cooking oil down to 0.3 micorn in size. 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.

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 quailty check the filter monthly. If you notice the filter material is greatly discolored or noticably dirty change out the filter. Failing to replace air filters as recommened can lead to reduced system efficieny, greater energy costs, and poor air quailty.

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 aliments caused by allergies. If you are sensitive to smoke from cooking or tobacco a MERV 13 filter is recommend. For many allergy sufferers it is recommend 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 recommend 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?

Filtersfast 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?
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Air Filters full product list:


FiltersFast MERV 8 Trion Compatible Filter 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $82.99

Our Price: $57.00

Save 31%!

FiltersFast MERV 8 16x27x6 Air Filter 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $59.99

Our Price: $47.00

Save 22%!

FiltersFast Trane 21x23x5 Compatible Filter 2-Pack
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Retail: $116.99

Our Price: $100.00

Save 15%!

FiltersFast 5" Trane BAYFTFR21M Compatible 2-Pack
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Retail: $117.99

Our Price: $101.00

Save 14%!

FiltersFast 5" Trane BAYFTAH21M Compatible 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $99.99

Our Price: $51.90

Save 48%!

FiltersFast 5" Trane BAYFTAH23M Compatible 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $104.99

Our Price: $68.66

Save 35%!

FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Retail: $110.99

Our Price: $95.00

Save 14%!

FiltersFast 20x20x5 Trion Compatible 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $94.99

Our Price: $50.80

Save 47%!

FiltersFast MERV 8 20x24x5 Air Filter 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $69.99

Our Price: $50.25

Save 28%!

FiltersFast FC100A1037 Compatible MERV 8 2-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $94.99

Our Price: $51.90

Save 45%!

Bionaire Foam Humidifier Prefilter 326

This item has been discontinued. Please review the product description for more information.

Our Price: $5.99

Lennox Foam Humidifier Filter - Lennox LX18

This item has been discontinued. Please review the product description for more information.

Retail: $47.99

Our Price: $40.98

Save 15%!

FiltersFast 15x20x5 MERV 13 Return Grille Filter

This item has been discontinued. Please review the product description for more information.

Retail: $50.99

Our Price: $43.99

Save 14%!

Holmes Foam Air Cleaner Prefilter APF-4

This item has been discontinued. Please review the product description for more information.

Our Price: $19.98

Holmes Foam Air Cleaner Prefilter APF-7

This item has been discontinued. Please review the product description for more information.

Our Price: $21.98

Holmes Foam Air Cleaner Prefilter 2-pk APF-10

This item has been discontinued. Please review the product description for more information.

Our Price: $23.96

Bionaire Foam Air Cleaner Prefilter 2-pack 1236

This item has been discontinued. Please review the product description for more information.

Retail: $29.99

Our Price: $21.98

Save 27%!

Hoover Air Purifier HEPA & Pre-filter AH60010

This item has been discontinued. Please review the product description for more information.

Retail: $23.99

Our Price: $20.70

Save 14%!

FiltersFast 14x24x5 MERV 8 Return Grille Filter

This item has been discontinued. Please review the product description for more information.

Retail: $48.99

Our Price: $41.99

Save 14%!

FiltersFast 15x20x5 MERV 8 Return Grille Filter

This item has been discontinued. Please review the product description for more information.

Retail: $47.99

Our Price: $40.99

Save 15%!

FiltersFast 10x10x1 MERV 8 Filter 6-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $49.99

Our Price: $40.99

Save 18%!

FiltersFast 12x12x1 MERV 8 Filter 6-Pack

This item has been discontinued. Please review the product description for more information.

Retail: $49.99

Our Price: $40.99

Save 18%!

Hamilton Humidifier Evaporator Pad EP-039
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Our Price: $527.76

Quality Flow 4" MERV 13 Panel Filter 3-Pack
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Retail: $199.99

Our Price: $161.99

Save 19%!

Quality Flow 12x24x4 MERV 14 Filter 3-Pack
FREE SHIPPING!

within the continental U.S.

This item has been discontinued. Please review the product description for more information.

Retail: $236.99

Our Price: $201.98

Save 15%!

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