The 10 Best true air filters (2023 reviews)

We consider a true air filter to be a worthy investment in the long run. We are here to help you choose the right one for your needs from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Filtrete air Filter READ REVIEW

Best With name: Buy: Filtrete true air Filter READ REVIEW

Best For Small space: Buy: Alen silver Filter READ REVIEW

Best With Homedics air Purifiers: Buy: Homedics true air Filter READ REVIEW

Best With lid: Buy: biorb gallon tank READ REVIEW

Best With All Trusens air Purifiers: Buy: Trusens true air Filter READ REVIEW

Best For fish: Buy: biorb true air Filter READ REVIEW

Best For smelly Cat poo: Buy: Purified air advanced Cat odor elimination true air Filter READ REVIEW

Best For Capturing airborne allergens: Buy: Alen true air Filter READ REVIEW

Best Feature: Easy To install: Buy: Biodefensor true air Filter READ REVIEW

Best Overall: Filtrete air Filter

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Filtrete air filter is the epitome of what a great filter should be. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool. It is designed with exclusive filtrete brand 3-in-1 technology from 3m to trap unwanted air particles while letting cleaner air flow through. They really do get more debris out of the air. It keeps the coils clean on the Air Handler so they can remove heat from the return air efficiently and take pollen/lint out of the air. They come in many sizes so should fit the furnace you have.

It works for pets, dust, if you use candles in your house, and keeps the whole house clean and cool. It is sign-up for a filter change reminder program that works for you.

• Air is noticeably cleaner, with less dust particles
• Good brand reputation

Best With name: Filtrete true air Filter

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A good pleated paper filter like the MPR 1000 strikes a sensible balance to help remove junk from the air and maximize air flow. It is designed with exclusive filtrete brand 3-in-1 technology from 3m to trap unwanted air particles while letting cleaner air flow through. Your filter will capture from the air passing through it. The side with the metal support should be placed closest to the Furnace Blower Motor.

These filters do a good job of filtration without getting clogged too quickly. The Filtrete M 1000 is a medium quality filter which does an excellent job of filtering the return air to the air handling unit. It is sign-up for a filter change reminder program that works for you.

• Filters the air in the house
• Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in
• Attracts and captures particles such as lint, pollen, dust, pet dander, smoke and smog
• Good balance between airflow and filtration

Best For Small space: Alen silver Filter

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Not everyone likes to purchase filter for their regular usage, but the alen silver filter would be an anomoly. The Energy Star certified t500 air purifier transforms your indoor air environment using directional airflow for consistent performance no matter its placement or the obstacles in the room. It cleans up some smelly air very quickly and easily portable. The fan is strong enough that it keeps the room10'degrees cooler than the rest of the house which is/is an unexpected bonus.

This air purifier is sleek, QUIET, and performs excellent. It has a large internal fan, cleaning the air in a large room quickly. The filter on these models are so easy to change, and you can tell instantly when walking in a room that has been purified by the filter, it smells so fresh. The air purifier is excellent.

• T500 replacement filter with patented mcp odor technology for allergens, smoke and heavy odor
• Works very well at reducing moldy smell in old mobile home
• Small footprint, quiet, and easy to use
• Excellent air purifier, helps a lot with cat allergy

Best With Homedics air Purifiers: Homedics true air Filter

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If you want nothing but the best desirable filter, then homedics true air filter is the one you should definitely consider, as it manages to bring a lot to the table. Petplus carbon filters are full of activated carbon giving your totalclean petplus air purifier a powerful odor-fighting tool to eliminate the odor without eliminating the source—your pet. This home air purifier replacement filter removes unpleasant odors like dog and cat feces, litter boxes, wet dog smell, and more. It allows it to absorb pet and household odors.

This is compatible with HoMedics oscillating tower HEPA Air Cleaners AT-PET01, AT-PET. It works with homedics air purifiers for home. For optimal performance, make sure to replace your air cleaner filter every 6 months.

• Eliminate the odor without eliminating the source—your pet
• Delivers what they promise

Best With lid: biorb gallon tank

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Not everyone likes to purchase filter for their daily purpose, but the biorb gallon tank would be an anomoly. The BiOrb AIR Terrarium is the ones that has the mister inside. They even provide you with a graph of how large or small the rocks have to be at the bottom if you choose to purchase more than the original ones provided so it doesn't mess up the filtration filter located on the bottom. It fits with the lid closed. The lights are absolutely dazzling.

The filter is at the bottom of the tank under the decorations. It looks awesome when you also get the glowing decorations with it. It comes with a RFID remote that is also dimmable which is pretty nice. It is an excellent idea and great looking aquarium.

• Looks amazing is easy to clean, and set up
• Very cool looking tank and worth the money to have a modern looking tank
• Cumbersome to clean due to small hole on top

Best With All Trusens air Purifiers: Trusens true air Filter

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The DuPont pet filter with true hepa features a combination filter with 3 levels of filtration formulated specifically to combat pet odors and dander. The All-in-one filter system combines a true hepa filter with an activated carbon filter and a separate washable prefilter. The filter is at the core of purifying your air and replacement is essential for your purifier to perform at its best.

The DuPont filtration draws in air from all directions, collecting pollutants from around the room. It is easy to install and actually make a noticeable difference over the standard filter set. It is compatible with all trusen air purifiers.

• Good brand reputation
• One of the new comers and featured product

Best For fish: biorb true air Filter

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The biorb true air filter's superior materials makes sure that it ages well with use. This kit supports fast and easy cleaning. It comes with rocks, air pump, air tube, air stone, light and duel plug for light and pump. The light and air pump has it's own power cord that connects to the transformer. The electrical component is important, because in addition to providing filtering, it also supplies air circulation to the bowl. It is suitable for both shrimp and snails.

The kit includes spare mechanical and biological filter cartridges, a cleaning cloth with rough and soft sides for easy cleaning of the acrylic surface, water conditioner and biological booster. This is a very effective filter, however, you will need to do a 1/3 water change every 3-4 weeks as well as cleaning the filter sponge/charcoal.

• Very quiet, the air filter makes the light shimmer in the tank
• Creates food rot and mess at top
• Filter cleaning and air stone changing is very easy

Best For smelly Cat poo: Purified air advanced Cat odor elimination true air Filter

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We would, of course, be remiss if we didn't mention purified air advanced cat odor elimination true air filter for regular usage. One major advantage of the purrified air filter over venting litter box odor out of your home is that purrified air allows you to keep the air you pay good money to heat or cool in your home. A number of people with cabinet-style litter box enclosures have mounted the filter inside the enclosure with the wall-mount bracket to great effect. It sounds like a fan, but not overly loud. It does have an on/off switch and a fan speed controller.

It is adaptable to most covered and open litter boxes, ferret cages, mobile homes (for pet and general air purification), and baby nurseries. The switch is analog, so as long as the switch is on, when power is supplied it will run. It works for the smell 90 percent.

• Serious, engineered air purification moves more air through more filter media
• Good investment for long term

Best For Capturing airborne allergens: Alen true air Filter

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The alen true air filter's high-end materials makes sure that it ages well with use. The T500 for Pet Dander and Odor is the best configuration for pet odors. It includes the hepa pure filter which doesn't help with odors at all. It is best for capturing airborne allergens, dust, odors, pet smells, and fur household odors.

Alen is dedicated to improving the quality of people’s lives by researching and developing thoughtfully designed air purifying solutions that transform your indoor environment. It is quieter than most fans, even on high.

• Small size, easy to use, loud
• Nice looking and takes up a small amount of space
• New and hot release

Best Feature: Easy To install: Biodefensor true air Filter

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The biodefensor true air filter is suitable and reliable and fits well with your daily usage. These carbon filters go along with the litter robot. It can control moisture by absorbing excess moisture from the air, which helps to prevent the growth of mold and mildew on jewelry. This can help to keep jewelry more pristine and avoid rust. These are packed and contain more activated carbon granules to the filter and will work more effectively for a jewelry box.

They're 0.62" thick, making them up to 2x thicker than your average filters. It contains as much as 105 grams of activated carbon to cover more area. It can control moisture by absorbing excess moisture from the air, which helps to prevent the growth of mold and mildew on jewelry boxes.

• Works for litter robot and much less cost
• New and hot release