BLUEAIR Genuine Blue Pure F3MAX Replacement Filter for 311i Max Air Purifiers - AHAM Certified, HEPASilent Dual Filtration, Removes 99.97% of Particles & Odors, Genuine Carbon Filter

Works great and needs replacing every 6-9 months depending on how much your air quality is. I burn wood on a wood stove and have two dogs. So I think it’s great for our space!

Love the air purifier. Very light weight, quiet. Seems effective at removing particulates. We have a large dog…it seems to help with removing doggy smells.

These filters worked great with my Blue Air and there were two in the box for what I paid for one on another shop. You do have to measure your Blue Air, the first ones I ordered were two inches too short. These fit perfectly.

After about 9 months in out the box with 13% filter life left on the app it was time to replace it. It does a very great job if you vape indoors a lot or have company that do. It will get loud if you want to dissipate the smoke quicker but it’s usually on max for 2 hours to clear out the room. The size is correct to OEM. I hope to see another 9 months before replacement. Remember to clean your pre filter!

These are the heart of the best air purifier on the market

Excellent! Easy to install.

I love these filters. They last about six months before I need to replace them.

fits, works just fine.

I was pleased to receive the filter I ordered, without delay. With the forest fire smoke heavy and problematic for our area, having this delivery in such a timely manner was most appreciated. All went smoothly, and is working without issue.

Nice design. Love the different settings. Lowest setting is barely audible but can increase if more circulation is needed. Good purchase.

Love mine! Use this in my hamsters room and definitely helps with dust and odor. Also we get a lot of forest fires where im from so this is a definite need for those bad days.

I purchased this BlueAir filter for my BlueAir 311i MAX smart air purifier. I believe this is the second purchase since owning this machine. As it is a factory replacement, the fit is fine, and it is easy to install.

These filters have completely removed the musky smell in my basement and noticeably reduced dust in my bedroom!