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Frequently Asked Questions


Learn more about Filtrete™ Home Filtration Products.

Air Filtration FAQs:

How often should I change my Filtrete filter?

For maximum effectiveness, we recommend you change filters at least every three months. However, the life of a filter can depend on the individual conditions in your home. You may need to change your filter more often if your home has:

  • Construction work in progress

  • Furniture or drywall sanding in progress

  • Pets

  • Smokers

  • A fan running continuously

In these cases, you may want to change the filter more frequently.

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What is the difference between fiberglass filters and Filtrete filters?

Fiberglass filters were originally developed to protect your furnace and/or air conditioning system. They were not intended to improve your indoor air quality. Filtrete filters were created to both help protect your furnace equipment AND clean the air passing through your filter.

Our filters improve your indoor air quality by attracting and capturing allergy-aggravating microparticles. Your air is cleaned each time it re-circulates through the filter.

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How do washable/reusable filters compare to Filtrete filters?

Surprisingly, even expensive washable/reusable filters can’t capture microparticles as well as electrostatic Filtrete Filters can. The real difference is the electrostatic charge found in most Filtrete Filters.

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Why does it matter that Filtrete filters are "electrostatically charged"?

Filtrete Filters that are electrostatically charged have both positive and negative charges on the fibers. The charge helps pull more particles from the air passing through the filter than a filter without a charge.

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Do Filtrete filters remove odors?

The Filtrete Odor Reduction filter contains activated carbon and starts working in minutes to reduce odors throughout your home. In the case of tobacco and wood smoke, removing smoke particles can help reduce the odor, and high efficiency Filtrete Filters readily capture these particle types.

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Do I have to worry about restricted airflow with Filtrete filters?

Filtrete Filters are engineered and tested to last three months under a wide range of typical operating conditions. Some of the reasons you may need to change your filter more often include: construction work in progress, furniture or drywall sanding in progress, pets, smokers, or a fan running continuously. If you use any filter for longer than the recommended lifetime, it may begin to restrict airflow or cause your heating/cooling system to malfunction. When in doubt, change the filter more frequently.

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Will a Filtrete filter eliminate the need for dusting?

Atmospheric dust consists of a wide variety of particulates ranging in size from 0.001 micron to a relatively large 100 microns. Because of the weight of the large particles, they will settle on your furniture long before they could reach your filter. The filter will capture some dust, but it will not eliminate the need for dusting.

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Water Filtration FAQs:

How do I install a Filtrete water filtration system?

Read our easy, step-by-step installation instructions. Need more help? Watch this installation demo video.

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How often should I change my Filtrete water filter?

Filtrete Under-Sink Water Filters effectively filter 2,000 gallons of water before they need to be changed. A 4-person household typically uses 2,000 gallons of kitchen tap water, and therefore needs a filter change, every 6 months.

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What will a Filtrete under-sink filter remove from my water?

The Filtrete™ Standard Water Filtration System reduces sediment, chlorine taste and odor from your tap water. The Filtrete™ Professional Water Filtration System does all that, while also reducing parasitic cysts.

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My family is happy drinking bottled water. Why should we make the switch to a Filtrete water filter?

Two reasons: cost and the environment. Bottled water can cost 500 to 4,000 times more than filtered tap water. And 85% of used bottles end up in landfills.* Learn more about the environmental impact of bottled water.

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*Sierra Club: "Bottled Water"

What are the different levels of water filtration?

  1. Basic water filtration reduces sand, sediment, rust and soil from 50 microns to 5 microns
  2. Standard water filtration includes basic water filtration and reduces chlorine taste and odor
  3. Advanced water filtration includes basic water filtration and standard water filtration and reduces health effect microbial cysts contaminants
  4. Maximum water filtration includes basic water filtration, standard water filtration and advanced water filtration and reduces lead and other health effect contaminants (depending upon the system)

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