Upgrade AER1 Replacement Filter Compatible with Holmes Air Purifier, 2 True Filters + 4 Carbon Booster Filters, 300AP-U4, Green
Upgrade AER1 Replacement Filter Compatible with Holmes Air Purifier, 2 True Filters + 4 Carbon Booster Filters, 300AP-U4, Green
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Upgrade AER1 Replacement Filter Compatible with Holmes Air Purifier, 2 True Filters + 4 Carbon Booster Filters, 300AP-U4, Green

4.6 stars out of 605 reviews
(4.6)|
605 ratings
Upgrade AER1 Replacement Filter Compatible with Holmes Air Purifier, 2 True Filters + 4 Carbon Booster Filters, 300AP-U4, GreenUpgrade AER1 Replacement Filter Compatible with Holmes Air Purifier 2 True HEPA Filters 4 Carbon Booster Filters HAPF300AP U4 GreenHolmes AER1 Filter Replacement for Holmes Air Purifier 2 True HEPA Filters 4 Carbon Booster Filters HAPF30ATLeemone Holmes Air Filter Replacement for Holmes Air Purifier with Carbon Boosters 2 Count
Actual Color:Green-Upgrade
Blue-Basic, $12.99
selected, Green-Upgrade, $14.99
Purple-Upgrade, $14.99

Key item features

  • Wide Compatibility: Compatible with various Holmes models including UNITSCAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP702, HAP706, HAP716, HAP1702, HAP2400, HAP9240, HAP9241, HAP9242, HAP9243, HAP9412, HAP9413, HAP9414, HAP9415, HAP9422, HAP9423, HAP9424, HAP9425.
  • Bionaire Compatibility: Also compatible with Bionaire models such as UNITSBAP260, BAP815, BAP825, BAP9200, BAP9700, BAP520, BAP9417, BAP9427, BAP9435.
  • High-Efficiency HEPA Filter: H13 True HEPA filter captures 99.97% of pollutants as small as 0.3 microns, including dust and pet dander, ensuring optimal air purification.
  • Odor Absorption: Carbon Booster Pre-Filter effectively absorbs household odors from pets, cooking, and smoking, while trapping larger air contaminants like hair and lint.
  • Comprehensive Package: Includes 2 True Filters and 4 Carbon Booster Pre-Filters, designed to fit aer1 ready air purifiers, replacing A Filter, D Filter, and K Filter.
  • Reliable Performance: Keeps your Holmes air purifier working at its full capacity, maintaining a clean and fresh indoor environment.
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Current price is $14.99
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Columbus, 43215
Arrives by Sun, Mar 22
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4.391051714119698 stars out of 5, based on 1722 seller reviews(4.4)
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Customer ratings & reviews

4.6 out of 5 stars
stars605 ratings184 reviews
How item rating is calculated
  1. 5 stars82% (495)
  2. 4 stars8% (51)
  3. 3 stars4% (23)
  4. 2 stars1% (6)
  5. 1 star5% (30)

Reviews summary

Pros
  • : Offers affordable options with reasonable cost.
  • : Requires little to no effort or expertise.
  • : Made a significant difference in air purification.
  • : Provides a secure installation like original filters.
Neutral
  • : Effective against pet and dust odors, but inconsistent with strong smells.
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Showing 1-3 of 184 reviews

Feb 2, 2026
Deanna
Item details
Color: Blue-Basic
Sold byLeemoneDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Best price on internet!

I always get my Holm's Air Filters from this site. Arrives within 2 days. Best price on the internet. …. The only reason anyone would be petty about this product is that it comes in a plastic bag as most all filter replacements due . They assumed it would come in some fancy packaging- … which is sad :(. … lol , some people live to be negative~ Be Best (hardy-har-har)

Helpful?6CAAS5Z4DJ1G5102186669
Feb 4, 2026
Vincent
Item details
Color: Blue-Basic
Sold byLeemoneDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Perfect fit...best price i found

This replacement filter and pre filter from Walmart were a perfect match for my air cleaner unit. Although identical to dirty filter I took out, it seemingly fit better into the track and the prefilter foam matched the poke-thru plastic pins exact. Highly recommend you keep maintenance up on your indoor air cleaner per manufacturer instructions. You'll find you get more volume and unquestionable cleaner air instead of blowing your dust around with a neglected unit.

Helpful?6CAAS5Z4DJ1G5102186669
Nov 16, 2025
Janet
Top Reviewer
Item details
Color: Blue-Basic
Sold byLeemoneDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Boss Hepa Filter!!!

When you have a compromised immune system, suffer from respiratory conditions (including pet dander, allergies, etc.) or are just virus and bacteria conscious, like me (Retired RN), who battles MS with immunocompromised health), this is perfect. It is slender (fits anywhere), quiet, and the validation on what the air sanitizing qualities are (zaps/kills active virus/bacteria in the air) evident when checking the carbon top filter. I have two other air sanitizers (they are not filters just "zappers") and two (smaller/compact) Hepa Filter units that run 24/7). All this in a 460 sq ft apt. due to my inability to receive vaccinations (I wear custom silk masks when I know I should). I have remained COVID free with the aforementioned preventive actions; this is the best full-size unit thus far. If you properly take care of your unit (check your filters frequently), it will certainly take care of you.

Helpful?6CAAS5Z4DJ1G5102186669