Blueair F3MAX Replacement PAC Filter for 311i Max: HEPA Air Purifier Filter, Captures Allergens & Odors, Energy Star Certified
$38.99
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$199.99
reg $349.99 Sale
4.7 out of 5 stars with 477 ratings
$59.99
was $64.99 New lower price
4.6 out of 5 stars with 21 ratings
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4.7 out of 5 stars with 161 reviews
5 out of 5 stars
12 March, 2026
originally posted on blueair.com
Best air purifier ever!
Love my Blueair 311imax. Keeps my apartment dust free and odor free.
5 out of 5 stars
9 March, 2026
originally posted on blueair.com
Replacement Filter
My new filter was easy to install and my unit is working perfectly once again.
5 out of 5 stars
2 March, 2026
originally posted on blueair.com
New Filter
Unit did not indicate we needed a new filter but the air indicator light went from green to a white. Our air quality had aways been green. We followed the instructions with no fix until the manual said "call us". So I decided to first order a new filter. The unit is now back to green.No need to call but really!!!
5 out of 5 stars
25 February, 2026
originally posted on blueair.com
Great product!
I have recently changed my filter for the second time and expected it to be cleaner than before because I had a very fluffy cat. To my surprise it was absent fur and dander, but still had a lot of dust and particles inside the filter. Great job!
5 out of 5 stars
24 February, 2026
originally posted on blueair.com
The Best
We love both our Blueair Filters. I only have one candle left that's not battery operated. When I light it in the kitchen that is about 30' away from the filter it turns to red. Amazing.
5 out of 5 stars
27 January, 2026
originally posted on blueair.com
Filter easy to change
It was surprisingly easy to change the filter the first time thanks to the clear description in the instruction manual that came with the air purifier.
5 out of 5 stars
27 January, 2026
originally posted on blueair.com
Great!
Everything from the packaging to the instructions on how to install was 5 Stars.This is a REALLY good product.
5 out of 5 stars
22 January, 2026
originally posted on blueair.com
Ease of filter installation .
I received my new filter and want to comment on how easy it was to install. Having my phone pared to the device is so helpful in daily use and maintenance. It’s very guilt as well.
5 out of 5 stars
20 January, 2026
originally posted on blueair.com
The strong silent type...
... rarely do you hear the Blueair air purifier, but I certainly know when it is turned off. I have asthma that is now diagnosed as COPD. Without this unit on, I wake up during the night unable to breathe. Blueair has changed my life.
5 out of 5 stars
14 January, 2026
originally posted on blueair.com
blue Pure 311i
A fantastic air purifier with a sleek design. Another gem from Blueair.
5 out of 5 stars
30 December, 2025
originally posted on blueair.com
Working as expected
Just changed the filters for the first time. Needed help and received it. Working well.
5 out of 5 stars
21 December, 2025
originally posted on blueair.com
Replaced the filter
It is so easy to replace the filter. I cooked bacon and the air purifier went into action. Love it!
5 out of 5 stars
20 December, 2025
originally posted on blueair.com
311iMax
Does a great job when it doesn't cut off on high speed after a few minutes.
5 out of 5 stars
17 December, 2025
originally posted on blueair.com
REALLY HELPS
My Blue Air really helps keep my indoors air clean. Especially when wildfire smoke fills our valley. Then it's worth its weight in gold!
1 out of 5 stars
11 December, 2025
originally posted on blueair.com
Too big
I have tired twice to get a filter for my Blur Air 311 and have been unsuccessful in getting the right size. It appears it does not exist. The site is less than friendly to find my filter. I was able get a refund for the first ones with out returning them but not able to do the same for these so currently stuck. Worn out trying . Took the scissors to it and made it work. So sad.
5 out of 5 stars
28 November, 2025
originally posted on blueair.com
Blue pure 311i Max
I just replaced the filter. Easy to do. Love this product
5 out of 5 stars
26 November, 2025
originally posted on blueair.com
Works as intended
The Blue Pure 311I Max + carbon filter works as intended keeping the inside air clean and removing pet orders (we have a cat). We are happy with your products. Respectfully, Steve M.
5 out of 5 stars
11 October, 2025
originally posted on blueair.com
Pure breath of air
Love the quality and convenience of this air filter
5 out of 5 stars
9 October, 2025
originally posted on blueair.com
Product
Excellent product. Replacement filter delivered quickly. Much appreciated. Thanks
5 out of 5 stars
7 October, 2025
originally posted on blueair.com
Great air filter
Works great. Easy to install/ replace. Works well and lasted a year in a single pet home with almost daily use. Replacement filter arrived quickly and ships flat in a small box.