Best Carbon Furnace Filters of 2025

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Carbon furnace filters are an essential component of any heating and cooling system. Made from high-quality activated carbon, these filters effectively trap and remove airborne pollutants, allergens, and odors from the air. They are particularly useful for those with respiratory issues, as they help to improve indoor air quality and reduce the risk of asthma and other respiratory conditions. Carbon furnace filters are also easy to install and maintain, making them a convenient and cost-effective solution for anyone looking to improve the air quality in their home or office.
At a Glance: Our Top Picks
Top 10 Carbon Furnace Filters
AIRX FILTERS 16x25x1 Carbon Filter 6 Pack
AIRX FILTERS WICKED CLEAN AIR. 16x25x1 Air Filter Odor Eliminator Carbon Filter MERV 8 AC HVAC Furnace Filters 6 Pack is a high-quality carbon air filter that enhances indoor air quality by effectively removing odors and harmful airborne particles. With its powerful carbon filtration, it absorbs and neutralizes unpleasant odors, leaving your space smelling clean and fresh. The MERV 8 rating ensures optimal airflow while capturing dust, pollen, and pet dander, prolonging the life of your HVAC system. Designed for easy installation and maintenance, it fits seamlessly into your existing HVAC or furnace system. With a 6-pack, you can enjoy cleaner air for up to 1 year, providing peace of mind for your family's health and well-being.
Nordic Pure Carbon Air Filters
The Nordic Pure Filters are designed to enhance your indoor air quality by effectively absorbing odors and volatile organic compounds (VOCs), making your living space more pleasant. With a nominal size of 16 x 20 x 1 inches, these filters fit well in most residential and industrial settings. They boast an efficiency rating of approximately MERV 8, ensuring they capture airborne particles to keep your air clean. Made in the USA, these filters are a reliable choice for anyone looking to improve their air filtration system.
Nordic Pure MERV 12 Air Filters
The Nordic Pure Filters are designed to fit a nominal size of 16 x 25 x 1, with actual dimensions of 15.5 x 24.5 x 0.75. Before purchasing, you can measure your existing filter to ensure a perfect fit. These filters not only help control odors but also provide high filtration, making them ideal for your daily air quality needs. With a MERV 12 rating, they offer filtration performance comparable to MPR ratings of 1500-1900, ensuring that your indoor air remains clean and fresh. Plus, these filters are proudly made in the USA.
Filterbuy 20x20x1 Air Filter MERV 8 (4-Pack)
Filterbuy offers a 4-pack of 20x20x1 replacement air filters designed for your furnace, air conditioner, heat pump, or HVAC system. The MERV 8 synthetic media has an odor eliminator feature and can trap up to 90% of airborne particles without affecting the air flow. These filters have an electrostatically charged, pleated design to capture more harmful particles and last 3 times longer than fiberglass models. The industrial-grade beverage board frames with dual wire backings offer better performance than standard cardboard designs. All components are made in the USA with recyclable materials.
Nordic Pure 20x25x1 MERV 12 Pleated Plus Carbon AC Furnace Air Filters 6 Pack
Nordic Pure Carbon Air Filters are high-quality furnace filters that are designed to provide both odor control and high filtration. With a nominal size of 20 x 25 x 1, these filters have an actual size of 19 1/2 x 24 1/2 x 3/4. It is important to measure your air filter to ensure a proper fit. The MERV 12 rating of these filters makes them ideal for customers who require superior filtration. They are equivalent to MPR 1500-1900. Made in the USA, these filters are not only effective but also reliable. Keep your home clean and fresh with Nordic Pure Carbon Air Filters.
Nordic Pure 16x20x1 MERV 12 Pleated Plus Carbon AC Furnace Air Filters 6 Pack
Nordic Pure Air Filters are high-quality furnace filters designed to provide both odor control and superior filtration. With a nominal size of 16 x 20 x 1, these filters are ideal for customers who require efficient air purification. The actual size of the filter is 15 1/2 x 19 1/2 x 3/4, so be sure to measure your air filter to ensure a proper fit. The MERV 12 rating of these filters is equivalent to MPR 1500-1900, ensuring that even the smallest particles are captured. Made in the USA, these air filters are a reliable choice for maintaining clean and fresh indoor air.
Filterbuy 16x25x1 Air Filter with Odor Eliminator (4-Pack)
The Filterbuy 16x25x1 Air Filter is a pack of 4 replacement filters for your HVAC system, with actual size of 15.50" x 24.50" x 0.75". It features MERV 8 synthetic media with odor eliminator, capturing 90% of airborne particles while preventing adverse smells without impacting air flow. The pleated design enhances performance and durability, while the industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. All components are made in the USA with recyclable materials.
Nordic Pure 16x25x4 MERV 12 Pleated Plus Carbon AC Furnace Air Filters 2 Pack
Nordic Pure 16x25x4 Air Filters are high-quality furnace air filters that provide excellent filtration for your home. With a MERV 12 rating, these filters are designed to capture a wide range of airborne particles, including dust, pollen, pet dander, and mold spores. The filters are made in the USA and have a nominal size of 16 x 25 x 4 inches, with an actual size of 15 1/2 x 24 1/2 x 3 5/8 inches. It is important to measure your air filter to ensure proper fit. These filters are compatible with Honeywell and Lennox systems that require a 16x25x4 Plus Carbon filter. The carbon component helps to reduce odors and improve the overall air quality in your home. With this 2 pack, you'll have an extra filter on hand for easy replacement. Keep your home's air clean and fresh with Nordic Pure 16x25x4 Air Filters.
Nordic Pure 14x25x2 Air Filters
The Nordic Pure Air Filters are designed to fit a nominal size of 14 x 25 x 2 inches, with actual dimensions of 13.5 x 24.5 x 1.75 inches. It's essential to measure your current filter to ensure the right fit. These filters provide excellent odor control, making them ideal for those who want to maintain a fresh indoor environment. With a MERV 12 rating, they offer superior filtration comparable to MPR ratings of 1500-1900, ensuring that you breathe cleaner air. Plus, these filters are proudly made in the USA, supporting local manufacturing.
Lennox X6675 20x25x5 Air Filter
The Lennox X6675 20x25x5 Air Filter is a Merv 16 carbon clean home furnace filter that is compatible with HVAC systems, air conditioners, and hospitals. It lasts up to a year and can be replaced easily every 6-12 months. The Wholesalehome cleaning cloth is used to clean the furnace or air handler before switching to the new filter. This 5-inch filter provides deep filtration, ensuring optimal air quality in your home. It is compatible with HCC20-28 models, as well as many Honeywell, Carrier, and Trion Air Bear models that accept a 20x25x5 filter.
Frequently Asked Questions (FAQs)
1. Are carbon furnace filters worth it?
Even if you don't notice any odors, using a carbon air filter can remove harmful VOCs from your home's air. Harmful pollutants such as odors and gases will slip right through high-MERV and HEPA filters. Even if you use an efficient pleated air filter in your home, carbon air filters will still provide benefits.
2. How long do carbon furnace filters last?
For carbon filters, the average lifespan is generally 3-5 years. Be aware, however, that not all units have the same specifications. There are air purifiers that will need more frequent filters changes, so be sure to carefully read the manual for your air purifier to determine its filter life.
3. Are carbon filters better?
Used together, activated carbon and HEPA filters can trap 99.97% of small particles 0.3 microns and higher as well as most larger particles, especially spores. Activated carbon filters can particularly benefit people who suffer allergies or aggravation from impure air, including second hand smoke.
4. What do carbon air filters remove?
Carbon filters trap odors through a process called adsorption, which occurs when molecules attach to the outside of a surface, rather than being soaked into it.
During our carbon furnace filter research, we found 24 carbon furnace filter products and shortlisted 10 quality products. We collected and analyzed 83,681 customer reviews through our big data system to write the carbon furnace filters list. We found that most customers choose carbon furnace filters with an average price of $68.09.
The carbon furnace filters are available for purchase. We have researched hundreds of brands and picked the top brands of carbon furnace filters, including AIRx Filters, Nordic Pure, Filterbuy, Healthy Climate. The seller of top 1 product has received honest feedback from 729 consumers with an average rating of 4.8.

Howard Chester is an architect from New York who holds a master's degree in architectural design, his passions for interior design and home improvement contribute to his extensive knowledge of all things furniture and home goods. Howard Chester Specializes in various architectural and interior design projects. He often publishes articles related to decoration on key websites and interior design magazines.