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Internet #205648325

Model #BF35-Silver-Carbon

BreatheSmart Classic HEPA-Silver Replacement Air Filter

Product Overview

Alen BreatheSmart Classic replacement air filter for mold, germs, bacteria, dust, dander, pet fur, and light odors. A multi-purpose air filter equipped with 4 layers of protection to filter out airborne pollutants, for cleaner, fresher air, so you can breathe better. The first layer consists of a cleanable pre-filter that traps pet hair and larger particles out of the air before passing through the next layer. The second line of filtration comes from the antibacterial treatment, which traps and kills bacteria, germs, and airborne mold spores. The third section is a thick True HEPA air filter, which captures dust, dust mites, dirt, pollen and other airborne allergens. The last section is packed with carbon which essentially absorbs odors and smells as they pass through the air purifier machine. Note: Alen air purifier models have different filter sizes, so please check the model name on the top panel to insure you are buying the correct filter size.
  • REPLACEMENT AIR FILTER - for BreatheSmart Classic Air Purifiers ONLY. If you own any other BreatheSmart air purifier, find your model name to make sure you order the correct air filter.
  • WHAT IT CAPTURES - Mold, Bacteria, Light Odors, Seasonal Allergies, Pollen, Dust, Dander & Pet Fur. True HEPA Filter to capture 99.97% of airborne particles down to 0.3 microns.
  • TRUE HEPA FILTER - Multipurpose air filter made with an antimicrobial compound that inhibits the growth of bacteria and mold spores. Built with a lightweight layer of activated carbon, True HEPA-Silver filter can also trap light chemical and smoke odors like those from cooking.
  • LONG FILTER LIFE - Recommended to change filter once every 10-12 months, or dependent on usage.
  • FIND YOUR MODEL - Look on the top of the panel of the unit to find the name on the Alen air purifier BreatheSmart Classic is the only one that just says "BreatheSmart".
  • Helps maintain a clean household by reducing dust
  • Pre-filter layer extends the life of the filter



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Air Treatment Product Type
Air Purifier Accessory
Appliance Category
Appliance Parts
Color Family
Part Type
Product Weight (lb.)
3.25 lb

Warranty / Certifications

Manufacturer Warranty
There is no warranty on Alen filters.

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
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Customer Reviews

  • 4.9
    out of 957 reviews
  • 75% recommend this product
Filter by:
Showing 1-10 of 957 reviews
Silver for Bedroom
I use this filter for the bedroom, love it . I can definitely tell the difference . My bedroom is full of clean air.
by Blondel T.
    Great for the home
    Great filter that works great in helping with air quality in our home. Great for filtering out cigarette odors, pet dander , and dust. I have never regretted purchasing our air cleaner.
      Breathe better.
      These filters work great. My house is running 2 units. With these running 24/7, my house has refused dust and we can definitely tell the difference in air quality. Highly recommend these filters.
      by Shawn E.
        I ordered this product online
        I ordered this product online and the entire process was easy. Removal of old filter was easy, and so was replacement. New filter seems to be working great.
        by William S.
          I like HEPA-SILVER I THING
          by Donna S.
            Amazing unit.
            I hadn’t used my Alen air purifier for awhile due to remodeling. After putting it back to use I noticed a difference in the air quality. When I changed the filter I was amazed at how much dirt was collected by the filter. I run in my family room and bedroom. Will never turn it off again.
            by Ted P.
              I have had a Alen
              I have had a Alen BreatheSmart for several years. I am glad to find a good price here for replacement filters since I run my Alen 24/7!
              by Terry R.
                Pure Air
                It does a great job of keeping the air clean. It is as advertised.
                by Michael D.
                  HIGHLY recommend Alen air filters!
                  In these days of Covid, I truly feel the Alen Breathesmart Classic True HEPA air filter is the only way to go. It gives me a sense of peace knowing that the air I breathe at home is always clean and free of viruses and other pollutants. I highly recommend Alen to all of my friends and family. In fact, it was a friend who recommended it to me and I am sincerely grateful for that!
                  by Karen S.
                    I have a bad allergy
                    I have a bad allergy to oak trees & a great room with 20 foot ceilings. This filter manages to keep the entire area clean.
                    by Debra S.
                      Showing 1-10 of 957 reviews