Germ Guardian FLT5900 True HEPA Genuine Air Purifier Replacement Filter J for GermGuardian AC5900WCA
$49.99



Price: $49.99
(as of Jan 07, 2025 14:53:14 UTC – Details)
GermGuardian® FLT5900 HEPA GENUINE Replacement Filter J is a combination filter. It includes a HEPA filter, a pre-filter/activated carbon filter layer that captures odors from cooking, pets and smoking, while helping to improve indoor air quality. The HEPA Filter captures 99.97% of dust and allergens as small as 0.1 microns such as household dust, pet dander, mold spores and plant pollens. It is recommended to use with the GermGuardian® AC5900WCA. The use of this genuine Guardian Technologies™ replacement part will maintain the product’s performance.
GENUINE HEPA PURE FILTRATION – Experience the power of authentic HEPA PURE air filtration. Genuine GermGuardian high efficiency HEPA air filters capture 99.97% of dust, allergens, and wildfire smoke particles down to 0.1 microns from the air. Our genuine filters effectively trap pollen, harmful bacteria, and pet dander from the air.
WHY HEPA PURE – Proudly manufactured in North America, HEPA PURE stands out with its multi-layer filtration technology. Backed by rigorous scientific testing using reputable and independent labs, we combine extensive research and superior materials to outperform the competition. Beware of knockoffs that compromise on quality and craftsmanship, leaving harmful pollutants in the air. Genuine HEPA PURE filters increase longevity with fewer replacements while delivering an air of confidence in a safer, cleaner, and more breathable environment.
PURE PARTS, PURER AIR – Genuine GermGuardian replacement filters guarantee certified fit and maximum filtration. Off-brand filters frequently fail HEPA testing standards, fit incorrectly, reduce efficacy, and may cause damage to your GermGuardian air purifier. Your purifier is only as powerful and effective as the filter you put inside.
REDUCES ODORS – The activated carbon pre-filter traps dust, pet hair, and other large particles, while extending the life of the HEPA filter. Treated carbon absorbs volatile organic compounds from the air and reduces odors from smoking, cooking and pets. The FLT21CB4 {ASIN: B08V98KPNQ} carbon pre-filters can be replaced every 2-3 months to help reduce common household odors and extend filter life.
COMPATIBLE AIR PURIFIER MODELS: Replacement filter for GermGuardian Air Purifier Model AC5900W
Customers say
Customers praise the air purifier for its quality, fit, and ease of installation. They find it reliable, long-lasting, and reasonably priced. The filter works well, and customers are satisfied with the air quality and functionality. However, opinions differ on whether it provides good value for money.
AI-generated from the text of customer reviews

IT’S ME SB –
Goes with Best Air Purifier
This is a good filter for a great air purifier. I have owned so many air purifiers. I have spent 500.00 to 89.00 over the pandemic for health reasons for a family member, a sick dog, and someone with sensitivity. It is my favorite and most reliable, and not to forget a more reasonably priced system. The thing that annoyed me the most was my needing to be informed through research that some filters were $$$$ and needed to be replaced in 3 months. Tip: You should vacuum all filers between changing. You will see how much dust and dander you have by doing so and moving it around the room or changing rooms. Read the sq footage of what you need to accompany the area you are putting it in. I never knew any of this and had to learn the hard $$$$$ way.
Jessica Alcocer –
Great Quality!
Likes: Price is worth it, quality is awesome. Set up was easy, lasts a long time. No issues! Like the company says, it fits like a glove.I used to have issues waking up in the morning stuffy from the dusty air in our apartment. Whenever I wake up now, I wake up breathing easy! Will definitely purchase again.
J. Simpson –
Great
A great filter. Works really well. I think the price is a tad too high. We are having to change it about every eight weeks. It works great!
Bhaj Ma –
Worthy Investment (at the âdiscountedâ price)
I finally replaced my filter after almost a year (letâs be honest, itâs a hot penny for these bad boys). I live in the south and have CRAZY allergies. I take several meds, but they havenât been cutting it, lately. After replacing my filter I can honestly say there is a significant improvement in my back-of-the-throat snot production. For this, Iâm extremely grateful.It also helps with the dust and pet hair accumulation on my surfaces. And perhaps Iâm nuts (a distinct possibility), but I swear the air LOOKS and smells cleaner.Worth the investment in my health and overall quality-of-life ðð¼ð
Amazongotmeagain –
Expensive!
Sooo expensive! I think they work well since they always have stuff on them when I replace it. I really wish they were less expensive though as I have the machine on 24/7 due to all the allergies. The machine itself was already costly and the amount they need changed due to them being on is a lot! I did my research prior to buying this unit and the cost of the filters, but until you actually have it it’s hard to know. Especially during Covid being extra cautious with everything that hasn’t helped. Super easy to install. Takes 10 seconds.
Anne S. Allen –
Exactly what I needed
Fit my air purifier perfectly. Arrived in a timely fashion
Kindle Customer –
Great filters
Love these filters they pick up a lot of dust. More than my furnace filter
Kent-o –
It does what I pay it to do.
When researching air purifiers, a major consideration was the running costs. These are long-lasting and reasonably priced replacements.
Grammy –
Was appalled at cost for these until I found them on Amazon for a fraction the price. They are the same filters. Checked carefully as I thought they would be substandard considering the price but they are even in the same packaging.
Gregg Antworth –
I have bought the filter twice. Very pleased with the performance, the filter catches the dust as promised.
xiang –
The listing shows “True Hepa” and product received is “Hepa”, per guardiantechnologies website, seems there is some difference, not sure:HEPA technology makes it possible to remove particles as small as 0.3 microns â making it a highly effective solution to remove potentially harmful particles from your indoor air.To be considered True HEPA by DOE (Department of Energy) standards, an air filter must remove 99.97% of all airborne particles as small as 0.3 microns in size. Using a True HEPA air filter is the most effective way to remove odor-producing bacteria, as well as minuscule irritants that can cause allergy and asthma symptoms.
MG –
Filtre de remplacement fonctionne très bien
Simon Brouillard –
Ces filtres sont utilises regulierement pour purifier l’air…. quelque fois, le purificateur agit aussi comme ventilateur…