Germ Guardian FLT4825 HEPA GENUINE Air Purifier Replacement Filter B for GermGuardian AC4300BPTCA, AC4900CA, AC4825, AC4825DLX, AC4850PT, CDAP4500BCA, CDAP4500WCA and More, 1-Pack, Gray

Weve been using these air filters for several years, and after recently reading through reviews to order a new batch I became a bit skeptical. Luckily, my wife bought us an air quality monitor as we struggle with horrid air quality in Denver due to the fires in California. I live in a house with only a swamp cooler and no other ventilation. Every time the swamp cooler kicks on, our indoor air quality becomes unhealthy when it pulls in all that air. So now Ive closed up the windows and am running two Guardian air filters at once to test their effectiveness, and the results speak for themselves. Our air quality is back to good with particulate matter and VOCs, as my brain fog is lifting. Another trial-by-fire was we snuck one of these into my grandmother-in-laws house and closed the door to the guest bedroom. The infamous old person smell was gone within an hour or two, and the air simply felt lighter. Its rather remarkable.

To filter out the dog smell during winter I purchased an air filter which this product fits perfectly! This filter I am replacing every 4-6 months. Easy as pie!

Have used this in my mother in laws assisted living apt. She swears by it. Before she always felt she had allergies and it was dusty. Since we bought her this we have kept her in new filters whenever it tells us.

I tried to use an aftermarket part from a different supplier and they did not work. The case has a tiny limit switch at the bottom that must be depressed for the power to turn on. The aftermarket part had a cardboard case with a foam seal and not enough regidity to depress the switch. I returned those and ordered these original supplier parts. They worked perfectly when installed. These are the only parts I will order in the future. More expensive but they work.

This product was easy to install in my air purifier. It definitely works to clean the air...just wish it wasnt so expensive!

I liked that this one is the real product that actually fit into my air purifier. The price fluctuates every so often. It works as it is supposed to.

Got this to replace our old filter. Fits and works well!

Ease of use, installation is simple and fast. Viruses and/or bacteria dont have a chance with this filter. Pet hair, dander and other allergens are significantly reduced if not completely eradicated

Easy to use and match with current filter

If you need this replacement for your product that uses this, then this will work great. Have no complaints easy to replace the old one. Amazon prices this competitively with other retailers.