BLUEAIR Genuine Blue Pure F4MAX Replacement Filter for 411i Max & 411a Max Air Purifiers - AHAM Certified, HEPASilent Dual Filtration, Removes 99.97% of Particles & Odors, Genuine Carbon Filter

This air filter is anazing. This 411 size is large and powerful enough to clea the air in a combined living-dining and kitchen….probably about 500 sq.feet. Even after a year I am surprised when I hear it rev up, even before I realize the need, when I am stir frying something and the steam and aromas start filling the air. I have a smaller one in my bedroom which works equally as well. I bought the filter to have ready but the signal has not yet been given to change. It is almost one year of constant use.

I couldn’t be happier with the BlueAir Air Filter Filters! These filters have truly made a difference in the air quality of my home. The installation is a breeze, and they fit perfectly into my air purifier. Since I started using them, I’ve noticed a significant improvement in the air – it feels fresher, and there's less dust and allergens floating around. What I love most is how effective they are at capturing even the tiniest particles, like pollen and pet dander, which is a game-changer for anyone with allergies. The filters are also long-lasting, which means I don’t have to worry about changing them too often. These filters work quietly in the background, ensuring clean air without any noticeable noise. Overall, I highly recommend these air filter filters to anyone looking to improve their indoor air quality. They’re a reliable and cost-effective solution for a healthier, more comfortable living space!

Works great

I was unaware of Amazon selling this filter! It’s about 5 dollars cheaper than its competitor seller and it gets here faster! It’s very simple to replace and it lasts about 4 months.

One star off because of the price. It is pricy. You have to keep replacing it and therefore keep buying it. But at the same time it does last a good amount. This is an OEM replacement filter so it fits perfectly as expected. The product had no defects and the box had an iridescent sticker saying it is an original BlueAir filter. Replacing the old filter and installing the new one is super easy. I would definitely recommend making sure you clean out the little bit of dust from the inside of the machine and also talking the opportunity to wash the outer cloth filter since you have already taken it off. After opening up the machine, the color difference between the old filter is easily noticeable. As expected, the older filter is gray while the new one is white. See attached photos. I not sure how much of a performance decrease the old filter was really causing but it had been like a month or so after the replacement notice and light came up so I went ahead and replaced it. I did consider getting an off-brand replacement simply because the cost is cheaper but I stuck with OEM cause I expect it to be higher quality and more quality tested. But who knows. I didn’t see actual numbers that could be compared between them. Noise level, air flow, and dust collection is the same as before since this is the same as the one that comes with the machine originally. Overall, it’s seems to be a good quality product and I would buy it again.

Perfect and easy replacment for our Blue Air Purifier

Very quiet and easy to move into other rooms when needed. It doesn't stand out in the room either.

Must get blue air products, other brands are cheap.

We use ours at the entrance to our kitchen . It’s on standby mode most of the time , it reacts to the slightest change in air quality , such as cooking with butter or slightly burnt toast etc . The indicator light will change from blue colour to orange for instance , and the fan speed will go to high speed and remove the contaminant !

Fits perfectly and does the job well!

Easy to install, will keep purchasing these filters. We love our air purifier.

Came in great condition and works perfectly!

Perfect fit and perfect replacement. Good product!