In today's rapidly changing environment, the air we breathe is no longer as pure as it once was. Urban growth, industrial emissions, and the luxuries of modern living have introduced a myriad of pollutants into our everyday lives. From bustling cities to quiet suburban homes, the threat of inhaling harmful particles like smoke, chemicals, and allergens has become an everyday concern.
At Guardian, we can help you tackle these challenges at the microscopic level. Our FLT4825 Genuine HEPA filter traps 99.97% of airborne viruses, bacteria, mold spores, and particles as small 0.1 microns. While off-brand imitators claim to do the job, they often fall short, allowing minuscule but harmful particles to remain, posing a threat to our health.
Investing in a high-quality filter, offering certified fit and superior filtration, is an investment in yourself and your family. Our Guardian air purifier replacement filters not only ensure a snug fit but also promise unparalleled filtration efficiency. In an era where the quality of the air we breathe can significantly impact our health, opting for Germ Guardian HEPA PURE™ is a step towards a purer future. Please note that packaging may vary.
Product Features
GENUINE HEPA PURE™ FILTRATION – Experience the power of authentic HEPA PURE™ air filtration. Genuine GermGuardian high efficiency FLT4825 HEPA air filters capture 99.97% of dust, allergens, and wildfire smoke particles down to 0.1 microns from the air. With a massive 9.0 sq. ft. of filter area and over 140 pleats, our genuine filters effectively trap pollen, harmful bacteria, and pet dander from the air.
WHY HEPA PURE™ - Proudly manufactured in North America, FLT4825 HEPA PURE™ stands out with its unmatched multi-layer filtration technology. Backed by rigorous scientific testing using reputable and independent labs, we combine extensive research, superior materials, and meticulous engineering 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 FLT22CB4 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 Models AC4825E, AC4825W, AC4870, AC4820, AC4880, AC4300BPTCA, AC4300WPT, AC4900CA, AC4850PT, CDAP4500BCA, CDAP4500WCA, PureGuardian Model AP2200CA and Black+Decker BXAP150
The GermGuardian FLT4825 True HEPA Replacement Filter is highly praised for its excellent air purification, effective filtration, and perfect fit. Customers appreciate its superior quality and reasonable pricing, making it a valuable investment for clean air.
"Fit was great air quality much better no more smelly room would definitely buy again" — Martelle A.
"Filters came quickly, both the air purifiers work well." — Rosemary F.
"Your service and delivery were good as well." — joyce a.
Reviews
Poor service… no product received
"I purchased the incorrect size filter and returned it as per your customer support instructions. As per fedex tracking, the return was received on April 16, 2026. No acknowledgment of receipt was received via email and no replacement product was received by me either. The person I spoke to at Lasko assured me that my replacement would be shipped when this one was received. No updates to date!"
— Sherrill L. (1/5)
Good Air Purifier filters!
"These filters are good quality. They really last a long time between changes. We’ll definitely continue buying them. I can attest to the quality of these filters & recommend them if you need good air purifier filters. Thanks!"
— Judy B. (5/5)
Good Product at fair price
"Good product at fair price. The company has good delivery time."
— William S. (5/5)
Easy to change out the
"Easy to change out the filter. I like the built in blue light on this air filter model. Good filter."
— Sheryl R. (5/5)
Still love 6+ years
"I love my two GermGuardian units. I bought them during Covid and find them so reassuring. I may need a third for my studio, and wonder if there are any that suspend from the ceiling?"
— Maureen D. (5/5)
Does the job it's made
"Does the job it's made to do. Can't ask more than that."
— Kim T. (5/5)
No complaints a we are
"No complaints a we are very happy with the product. A great system that works well in our home."
— Derek M. (5/5)
Yes I like this air
"Yes I like this air purifier. It goes into auto mode if you need more air purifying. It shows where your air is as fara as if it is good or not. It shows by the color on the purifier."
— Carol S. (5/5)
I was so glad I
"I was so glad I could still order filters for this unit. I was afraid the unit would be obsolete. It's wonderful to have it running again thank you"
— Pamela J. (5/5)
Replacement filters
"Easier to order. Delivery was very fast and easy to install. It was also very easy to find my filters inline"
— Joseph H. (5/5)
Q&A
I Have had trouble finding filter 4825 herb filter genuine
We sincerely apologize that your experience with our product was less than ideal and we want to see how we might be able to help further. In order to ensure we can direct your question to the proper team, and we can offer the best, targeted support, please complete a contact form which can be found below. One of our agents will be standing by to assist you. https://laskoproducts.zendesk.com/hc/en-us/requests/new?ticket_form_id=360003451752
What is the CADR rating for AC 5300 air cleaning systems? Not finding on your web and the bot is useless
We understand the need for asking this question. In order to ensure we can direct your question to the proper team, and we can offer the best, targeted support, please complete a contact form which can be found below. One of our agents will be standing by to assist you. https://laskoproducts.zendesk.com/hc/en-us/requests/new?ticket_form_id=360003451752
I’ve tried 6-8times to order 2 4825B re filters, but can’t complete order as nothing happens when I tap Add to Cart”.
We understand the need for asking this question. In order to ensure we can direct your question to the proper team, and we can offer the best, targeted support, please complete a contact form which can be found below. One of our agents will be standing by to assist you. https://laskoproducts.zendesk.com/hc/en-us/requests/new?ticket_form_id=360003451752
Does this fit AC4825 series ?
Hi Sandra, Thank you for reaching out to Germ Guardian. We understand that you want to make sure if the FLT4825 is compatible with the model AC4825. Please allow me to assist you. Yes, the FLT4825 is compatible with the model number AC4825 any series. We appreciate you as a customer and look forward to helping you in any way we can. If it is more convenient you may chat with us on Lasko.com . We are available to chat Monday through Friday from 8am to 9pm EST.
I purchased the GermGuardian AC4820 which came with the FLT 4825 Filter B. Can I replace that with the either the FLT 4825SM or FLT 4825VO filters if I choose? Would there be any difficulties with fit? Thank you! Very impressed with it so far. Husband has far less eye allergies and there is less dust in the house!
Hi, Thank you for reaching us. We hope you are doing great! Yes, that will be fine. HEPA PURE- FLT4825 PET PURE - FLT4850PT Smoke Clear - FLT4825SM Toxic Clear - FLT4825VO You may choose any filter above as long as they are genuine filters.
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