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BLUEAIR Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto

4.5 4.5 out of 5 stars 6,360 ratings

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311 Auto

Purchase options and add-ons

Color White
Brand Blueair
Product Dimensions 10.2"D x 10.2"W x 20.5"H
Floor Area 388.0
Specification Met Energy Star Certified
Power Source
Corded Electric
Item Weight
6.8 Pounds
Control Method
Touch
Filter Type
Pre-Filter

About this item

  • AUTO ADJUSTS SO YOU CAN REST EASY: One touch auto mode uses a particle sensor to monitor pollutant levels and adjusts fan to ensure optimal air quality; LED indicator displays air quality status as excellent (blue), moderate (orange) or polluted (red)
  • CLEAN AIR IN MINUTES: Blueair’s HEPASilent dual filtration delivers up to 45% faster cleaning and up to 67% less noise than traditional HEPA filtration alone; Quickly cleans 388sqft medium room in about 12.5 min or up to 1862qft XL space in 60min, on high
  • ONE OF THE QUIETEST AIR PURIFIERS: Quieter (23 dB) than whisper on low; ENERGY STAR rated - uses less energy (3W) than an LED lightbulb on low so it’s kind to your wallet and the planet
  • ASTHMA & ALLERGY: Removes 99.99% of pollen, helping reduce allergens and pollutants that trigger allergy and asthma symptoms
  • REMOVES ODOR & PARTICLES DOWN TO 0.1 MICRON: Ideal for smoke & smog during wildfire season; Removes 99.97% of airborne particles like smoke, dust, viruses and pet dander, while the carbon filter traps light household odors from smoking, pets and cooking
  • MOST AWARDED AIR PURIFIER BRAND IN THE US: Blue Pure 311 Auto has won Wirecutter Pick – The Best Air Purifier 2021, 2020, 2019; The Spruce Recommends – Top Pick
  • INDEPENDENTLY TESTED FOR PERFORMANCE & SAFETY, ZERO OZONE: AHAM Verifide for CADR; Ozone Safety Standards Certified by CARB; Zero Ozone Verified (<5 ppb) by Intertek Sustainability Program; Trusted Education Partner of British Health Professional Academy
  • GENUINE FILTERS FOR OPTIMAL PERFORMANCE: Replace your filter every 6 months to ensure proper functionality & only use genuine Blueair filters; Shop 311 Auto replacement filter: B08F13YBG2; Upgrade to SmokeBlock filter for enhanced removal: B0B45D9TDS

Customer ratings by feature

Sleep mode
4.4 4.4
Noise level
4.4 4.4
Maneuverability
4.3 4.3
Easy to use
4.3 4.3

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From the brand

Product guides and documents


From the manufacturer

Low noise and energy consumption

low noise

Low noise level

Cleans the air with noise levels no louder than a whisper on low (23 dB) and with less noise than a normal conversation on high (53 dB).​

low energy

Low energy consuption

It is rated for energy efficiency (3-35 W) - certified room air purifiers are 40% more energy-efficient than standard models.​

311 wirecutter

Wirecutter Pick

Independently reviewed by the experts at Wirecutter, the Blue Pure 311 Auto ranks as one of their top air purifier picks for 2020 for "Delivering exceptional performance in an attractive form".​

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Customer Reviews
4.5 out of 5 stars
6,360
4.5 out of 5 stars
2,313
4.6 out of 5 stars
7,060
4.6 out of 5 stars
9,608
4.7 out of 5 stars
12,305
Recommended room size
388 ft² 185 ft² 190 ft² 161 ft² 540 ft²
CADR - Smoke
250 cfm 119 cfm 123 cfm 105 cfm 350 cfm
Auto Mode
AQI
Included Pre-Filters
Metal Filter Cage

Product Description

"Blue Pure 311 Auto air purifier quickly cleans 388sqft medium room in about 12.5 min or up to 1862sqft extra-large space in 60min, on high. Only Blueair air purifiers use HEPASilent™ technology, delivering maximum filtration with minimum noise. Combining mechanical filtration with electrostatic charging of particles produces clean air up to 45% faster with up to 67% less noise than traditional HEPA filtration alone. Delivers high performance with automated one-button control in a lightweight, compact package and includes a washable, pre-filter in Arctic Trail (Gray). It can also be customized in other Swedish-inspired pre-filter colors that are sold separately. Carbon filter traps light household odors from smoking, pets, cooking, and more. Award-winning, sleek, Swedish design compliments your aesthetic while working hard to clean your air so you can place where it will be most effective at capturing airborne particles & odors without worrying about it cramping your style. Independently evaluated for safety standards and third-party tested for performance as part of the AHAM Verifide® Program for air cleaners, this air purifier has a Clean Air Delivery Rate (CADR) of 250 for fine smoke particles, 244 for pollen particles, and 250 for dust particles.

CLEAN AIR IN A MATTER OF MINUTES: Comparing CADR performance of Blueair models with mechanical and electrostatic filtration vs same models with only H13 HEPA mechanical filtration. When similar CADR was measured, Blueair models with mechanical and electrostatic filtration achieved less noise with less energy than same models with only H13 HEPA mechanical filtration. According to AHAM, air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time.

REMOVES ODOR & PARTICLES DOWN TO 0.1 MICRON: Blueair models with HEPASilent's mechanical and electrostatic filtration produced higher CADR, lower noise, and had lower energy consumption vs. the same models with only mechanical filtration (H13 filter). Tested on PM2.5 (0.1 - 2.5 μm) up to 90min; Tested on Influenza A (H1N1) with a minimum reduction rate of 99.99% in 60min.

REMOVES 99.99% OF COMMON ALLERGENS: Tested on pollen particles 5.048 - 11.14 μm on Blue Auto, DustMagnet™ and Protect.

MOST AWARDED AIR PURIFIER BRAND IN THE US: Based on survey of over 50 awards, accolades, and recommendations issued by independent consumer associations, media publications, and industry competitions from January 1, 2022, through August 16th, 2022, for products sold in the US by top 10 air purifier brands according to NPD Group Retail Tracking Service, Small Appliances, U.S. sales dollars June 2022 YTD.

BACTERIA & MOLD REMOVAL: Tested on E.coli with mininum reduction rate of 99.9% in 60min. Tested on A.niger with minimum reduction rate in 99.9% in 60min."

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Warranty & Support

Product Warranty: For warranty information about this product, please click here

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BLUEAIR

BLUEAIR Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto


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BLUEAIR Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto
Blueair BLUEAIR Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto
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Price-17% $207.00
List:$249.99
$339.99$225.66$99.99-20% $279.99
List:$349.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Noise level
4.4
4.4
4.1
4.2
4.1
Maneuverability
4.3
4.3
4.4
4.5
4.4
Easy to use
4.3
4.3
4.7
4.2
4.7
Scent
4.1
4.1
4.2
4.2
Energy efficiency
4.0
4.0
4.4
4.4
Sold By
Tech Source Pros
Amazon.com
Amazon.com
Amazon.com
Amazon.com
filter type
Pre-Filter
Activated Carbon
Activated Carbon
Activated Carbon
Activated Carbon
floor area
929 square feet
432 square feet
635 square feet
control method
touch
touch
application
touch
application
power source
Corded Electric
Corded Electric
Corded Electric
Corded Electric
Corded Electric
noise level
23 decibels
23 decibels
23 decibels
24 decibels
23 decibels
specification met
Energy Star Certified
Energy Star Certified, AHAM Certified, CARB Certified
Energy Star Certified

Customer reviews

4.5 out of 5 stars
4.5 out of 5
6,360 global ratings

Customers say

Customers like the ease of use and sound of the air purifier. For example, they mention it's very easy to set up and use, and a pretty simple device. That said, some disagree on value, smell, appearance, performance, and durability.

AI-generated from the text of customer reviews

316 customers mention228 positive88 negative

Customers like the sound of the air purifier. They mention that it really is quiet, blends in like a nice white noise, and is whisper soft. Some say that the night feature is completely silent.

"...I would say auto mode is more quiet or no louder than an average fan that's on it's lowest speed and everyday mode is maybe as loud as a fan on..." Read more

"...It is extremely quiet during normal operation...." Read more

"...We had one in our bedroom on auto mode and it was whisper quiet!!! On the higher speeds the noise is more noticeable but not that bad...." Read more

"...had some problem with the motor because I could hear a high-pitched whirring noise especially at the lowest fan speed...." Read more

233 customers mention200 positive33 negative

Customers like the quality of the air purifier. They say it effectively cleans the air with little to no noise. It removes dust from the air fairly well, and it monitors the quality. Some say it clears the entire floor and even a few feet away. The air quality sensor does work and it can effectively remove smoke and clean the air of 2,000 square feet.

"...fantastic job at keeping the quality of air inside our home filtered, clean and smelling fresh during the seasonal bad air quality...." Read more

"This is a really good air filter. I’ve tried a bunch and this one is the best. Clears out cooking smells within hours...." Read more

"...Filters are easy to change and the cover washes well." Read more

"...Basically, it autodetects the air quality and adjust the fan speed accordingly...." Read more

63 customers mention52 positive11 negative

Customers find the air purifier easy to use. They mention it's simple and easy to set up. Some say that the air filter needs to be replaced every three months. Overall, most are satisfied with the ease of use and recommend it to others.

"...It's a bit thicker and looks nice.The set up was simple. It's really just plug it in and go...." Read more

"Arrived on time, very well packaged. Air Purifier was set up in 5 min and is running fine. It is very quiet in normal mode...." Read more

"Arrived quickly and setup was easy...." Read more

"This is a pretty simple device, it sits on top of the filter and sucks in air through it and spits it out through the top...." Read more

357 customers mention226 positive131 negative

Customers are mixed about the performance of the air purifier. Some mention that it functions well, has excellent results, and is a good balance between cost, performance, and aesthetics. However, others say that it just doesn't perform well, the fan no longer works, and the auto function is questionable.

"...The auto mode feature is pretty cool and the sensor is pretty sensitive...." Read more

"...It's been about a year and it works pretty well - I haven't even changed the filter, I just lint-roll off all the accumulated cat hair from the..." Read more

"...But this mode is not for everyday use...." Read more

"Excellent Results" Read more

112 customers mention71 positive41 negative

Customers are mixed about the appearance of the air purifier. Some mention that it looks fairly nice, has a minimalist design, and blends with any decor. However, others say that it has mediocre design, the LCD screen seems cheap, and the gray fabric is very cheap.

"...I also like the quality of the upgraded cover. It's a bit thicker and looks nice.The set up was simple...." Read more

"...It's pretty cool and futuristic...." Read more

"...The exterior filter design also makes the unit more fragile; filters can get smashed if the unit is bumped into or knocked over...." Read more

"My Blueair Purifier is a flat-out beast! The design is minimalist, yet functional...." Read more

108 customers mention72 positive36 negative

Customers are mixed about the smell of the air purifier. Some mention that it works great to remove odors and gives them peace of mind about the air quality, while others say that the smell was overwhelming.

"...at keeping the quality of air inside our home filtered, clean and smelling fresh during the seasonal bad air quality...." Read more

"...I’ve tried a bunch and this one is the best. Clears out cooking smells within hours...." Read more

"...It may have produced a slight scent in the first few days but I haven't noticed anything since...." Read more

"...It not only detected smoke but it detected odors like fried fish that we made one night, which is pretty cool So it's good to remove cooking odors..." Read more

63 customers mention35 positive28 negative

Customers are mixed about the value of the air purifier. Some mention that the filters are very reasonably priced, while others say that they're kind of pricey.

"...the best, and definitely worth more than its slightly higher but fair price. Highly recommend." Read more

"...something negative, I guess I would have to say their OEM filter replacements are pricey but this was not a deterrent for me...." Read more

"...However, replacement pre-filters are inexpensive.We were so impressed with the 411+ that we ordered a 311 Auto for the living room...." Read more

"...It's not super strong but noticeable. It's also pretty expensive. I'm sure there are other cheaper and maybe better options...." Read more

55 customers mention21 positive34 negative

Customers are mixed about the durability of the air purifier. Some mention it's well made, excellent product, and quiet. They also like the quality of the upgraded cover, which is a bit thicker and looks nice. However, others say that it broke after just 2 months of use, the material tears easily, and the fan broke after 5 months of usage.

"...The exterior filter design also makes the unit more fragile; filters can get smashed if the unit is bumped into or knocked over...." Read more

"...I also like the quality of the upgraded cover. It's a bit thicker and looks nice.The set up was simple...." Read more

"...The pre-filter is my biggest criticism, it seems to be a material that tears easily...." Read more

"...Unfortunately, this unit broke after just 2 months of use, and reaching out to customer service took almost a month to hear back...." Read more

This purifier is amazing! Allergies, be gone!
5 Stars
This purifier is amazing! Allergies, be gone!
This is now our 2nd Blue air purifier. I originally bought the smaller Blue 411+ for our bedroom and I was very impressed with how having that in our bedroom improved my lifelong allergies that I take a daily pill for. Prior to getting the smaller 411+ I would very often wake up with a stuffed nose. Yes, we do have 2 dogs but they are not allowed in the bedroom due to my allergies. I honestly didn't have high hopes for the smaller unit but after a couple days of it purifying the bedroom air, I noticed a huge difference. I began waking up with clear sinuses and the room smelled "different". Not a bad smell but maybe just NO smell? Anyhow, after giving the little Blue a good 30 days to prove itself, I knew I needed a larger one for our living room. This is also where our dogs (golden retriever and black lab) spend most of their time with us when they are inside. And having these 2 dogs and allergies doesn't make life super easy as cleaning goes. I have to vacuum daily or every other day (minimum) and will at times pull up what looks like a small dog inside my vacuum canister. Especially, when my golden is blowing her coat.Finally after comparing, I went ahead and ordered the Blue 311 Auto for our living room which is approximately 420sf.I also bought a separate filter cover that's shown in my pictures and an additional filter to have on hand.The unit arrived well packaged and without damage.It came with a main filter installed and a a light gray filter cover but tbh, I will use the light gray cover while cleaning and drying the dark gray cover I have on it now. I as I prefer the dark (name is actually Winter Reed) over the lighter gray. I also like the quality of the upgraded cover. It's a bit thicker and looks nice.The set up was simple. It's really just plug it in and go.I like that this unit has 4 mode settings and indicator lights to show air quality and when the filter needs replaced.I have noticed one time when out of nowhere the air quality sensor light briefly turned from blue to orange then back to blue.The light sensor color indicators and level info are Blue (good), Orange (moderate), and Red (polluted).The main filter change sensor is supposed to switch on after 6 months of use but I haven't had it long enough to confirm if that works yet.For maintenance, I do run my vacuum brush over the outer filter cover once a week to clean any dust off of it which, there always is. This was also an immediate indicator to me that this fella is doing its job!I will also run a damp cloth on the the plastic exterior at the same time just to keep it clean and in the best working condition.Noise Level:This 311 Auto unit has 4 modes.✔Auto Mode: (fan speed will change depending on the air quality it senses).✔Night Mode: (whisper quiet, low speed)✔Everyday Mode: (medium speed)✔Boost Mode: (fastest speed and very loud).Boost mode is like, wind tunnel loud! Way too loud for us to watch TV in the same room if it was on. But this mode is not for everyday use. The only time I've used boost mode is when there is a specific reason i.e.,dogs came in from rain or I may have cooked/baked something that has a lingering smell, etc. I would just turn it on boost for 10 minutes or so to dissipate whatever the odor issue may be.We typically have it set on auto mode or everyday mode and it's very, very quiet. I would say auto mode is more quiet or no louder than an average fan that's on it's lowest speed and everyday mode is maybe as loud as a fan on medium setting.▪️Please see video I took of the different modes to show the sound difference between all four settings▪️I have now had this particular unit running 24/7 for about 2 months and we love it! We live in Washington State so when it rains and our fur babies go out for break, any "wet dog" smell is gone in minutes if I kick in the boost mode but everyday mode will also take care of that within an hour or so.Sadly, I also know fire season will soon be upon us for summer and I have no doubt both units will do a fantastic job at keeping the quality of air inside our home filtered, clean and smelling fresh during the seasonal bad air quality.We will be tackling a full home remodel next year which we'll be adding central heating and air but even then, I plan on keeping both these units up and running!Would I recommend this Blueair 311 Auto?Absolutely 100%.Summary: All in all, if you suffer from allergies/asthma like me, have animals, or simply a home without filtered air and are teetering on whether or not to purchase, go for it! You won't regret it! Personally, these air purifiers have honestly changed my life! I wish I would've found this company sooner! I HIGHLY recommend!If I must find something negative, I guess I would have to say their OEM filter replacements are pricey but this was not a deterrent for me. They also offer an auto ship filter service for a discount.I give this an easy 5 star!(I was NOT paid for this review and was not asked to leave one. I have no affiliation with this company other than being a new-ish forever customer)!Hopefully this will help someone!
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Top reviews from the United States

Reviewed in the United States on June 30, 2021
Style: 311 AutoVerified Purchase
Customer image
5.0 out of 5 stars This purifier is amazing! Allergies, be gone!
Reviewed in the United States on June 30, 2021
This is now our 2nd Blue air purifier. I originally bought the smaller Blue 411+ for our bedroom and I was very impressed with how having that in our bedroom improved my lifelong allergies that I take a daily pill for. Prior to getting the smaller 411+ I would very often wake up with a stuffed nose. Yes, we do have 2 dogs but they are not allowed in the bedroom due to my allergies. I honestly didn't have high hopes for the smaller unit but after a couple days of it purifying the bedroom air, I noticed a huge difference. I began waking up with clear sinuses and the room smelled "different". Not a bad smell but maybe just NO smell? Anyhow, after giving the little Blue a good 30 days to prove itself, I knew I needed a larger one for our living room. This is also where our dogs (golden retriever and black lab) spend most of their time with us when they are inside. And having these 2 dogs and allergies doesn't make life super easy as cleaning goes. I have to vacuum daily or every other day (minimum) and will at times pull up what looks like a small dog inside my vacuum canister. Especially, when my golden is blowing her coat.
Finally after comparing, I went ahead and ordered the Blue 311 Auto for our living room which is approximately 420sf.
I also bought a separate filter cover that's shown in my pictures and an additional filter to have on hand.

The unit arrived well packaged and without damage.
It came with a main filter installed and a a light gray filter cover but tbh, I will use the light gray cover while cleaning and drying the dark gray cover I have on it now. I as I prefer the dark (name is actually Winter Reed) over the lighter gray. I also like the quality of the upgraded cover. It's a bit thicker and looks nice.
The set up was simple. It's really just plug it in and go.

I like that this unit has 4 mode settings and indicator lights to show air quality and when the filter needs replaced.
I have noticed one time when out of nowhere the air quality sensor light briefly turned from blue to orange then back to blue.

The light sensor color indicators and level info are Blue (good), Orange (moderate), and Red (polluted).

The main filter change sensor is supposed to switch on after 6 months of use but I haven't had it long enough to confirm if that works yet.

For maintenance, I do run my vacuum brush over the outer filter cover once a week to clean any dust off of it which, there always is. This was also an immediate indicator to me that this fella is doing its job!
I will also run a damp cloth on the the plastic exterior at the same time just to keep it clean and in the best working condition.

Noise Level:
This 311 Auto unit has 4 modes.
✔Auto Mode: (fan speed will change depending on the air quality it senses).
✔Night Mode: (whisper quiet, low speed)
✔Everyday Mode: (medium speed)
✔Boost Mode: (fastest speed and very loud).
Boost mode is like, wind tunnel loud! Way too loud for us to watch TV in the same room if it was on. But this mode is not for everyday use. The only time I've used boost mode is when there is a specific reason i.e.,dogs came in from rain or I may have cooked/baked something that has a lingering smell, etc. I would just turn it on boost for 10 minutes or so to dissipate whatever the odor issue may be.

We typically have it set on auto mode or everyday mode and it's very, very quiet. I would say auto mode is more quiet or no louder than an average fan that's on it's lowest speed and everyday mode is maybe as loud as a fan on medium setting.
▪️Please see video I took of the different modes to show the sound difference between all four settings▪️

I have now had this particular unit running 24/7 for about 2 months and we love it! We live in Washington State so when it rains and our fur babies go out for break, any "wet dog" smell is gone in minutes if I kick in the boost mode but everyday mode will also take care of that within an hour or so.
Sadly, I also know fire season will soon be upon us for summer and I have no doubt both units will do a fantastic job at keeping the quality of air inside our home filtered, clean and smelling fresh during the seasonal bad air quality.
We will be tackling a full home remodel next year which we'll be adding central heating and air but even then, I plan on keeping both these units up and running!

Would I recommend this Blueair 311 Auto?
Absolutely 100%.

Summary: All in all, if you suffer from allergies/asthma like me, have animals, or simply a home without filtered air and are teetering on whether or not to purchase, go for it! You won't regret it! Personally, these air purifiers have honestly changed my life! I wish I would've found this company sooner! I HIGHLY recommend!
If I must find something negative, I guess I would have to say their OEM filter replacements are pricey but this was not a deterrent for me. They also offer an auto ship filter service for a discount.
I give this an easy 5 star!

(I was NOT paid for this review and was not asked to leave one. I have no affiliation with this company other than being a new-ish forever customer)!

Hopefully this will help someone!
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659 people found this helpful
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Reviewed in the United States on February 10, 2024
Style: 211+ AutoVerified Purchase
One person found this helpful
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Reviewed in the United States on February 16, 2024
Style: 311 AutoVerified Purchase
Reviewed in the United States on January 2, 2022
Style: 211+ AutoVerified Purchase
7 people found this helpful
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Reviewed in the United States on March 8, 2024
Style: 311 AutoVerified Purchase
Reviewed in the United States on January 24, 2024
Style: 211+ AutoVerified Purchase

Top reviews from other countries

Translate all reviews to English
George in Canada
5.0 out of 5 stars Efficient purifier, good appearance, easy filter replacement, cumbersome controls.
Reviewed in Canada on August 26, 2023
Style: 211+ AutoVerified Purchase
Unboxing
5.0 out of 5 stars Sleek and quiet
Reviewed in Canada on March 7, 2023
Style: 311 AutoVerified Purchase
Customer image
Unboxing
5.0 out of 5 stars Sleek and quiet
Reviewed in Canada on March 7, 2023
I own 3 of the 411+ that are used in bedroom/office for last few years and I’ve have been very pleased with the 411+ air quality performance so when I saw a deal on the 311+ Auto for $195 I snatched it up instantly. Its a lot bigger then the 411+ but the fan sound is just as quiet if not quieter then the original 411+. It’s just the right size for the living room/kitchen. We always leave all of them running on second speed and you honestly don’t hear them at all but the air quality is much fresher and cleaner. Cooking smells are gone within an hour and lot less dust during the winter months when the furnace is running and no allergies in the summer months. Would recommend any of the blue-air filters when they go on sale from time to time or even buy an warehouse deal open box one on Amazon as most of the time it’s just a return that someone changed their mind. The only con is the original filters can get a little expensive but you can buy third party for a lot less if you choose too but I did notice a difference in the air quality from the original filters vs third party so just a heads up if choosing third party filters for any blue-air air filters.
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15 people found this helpful
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Luis Miguel Covarrubias Méndez
3.0 out of 5 stars Tengo 2, creo tener mi favorito…
Reviewed in Mexico on July 2, 2022
Style: 311 AutoVerified Purchase
Lane
5.0 out of 5 stars Incredible
Reviewed in Canada on November 25, 2023
Style: 211+ AutoVerified Purchase
Gerry
5.0 out of 5 stars Breathing in Clean Air Feels Good
Reviewed in Canada on August 13, 2023
Style: 311 AutoVerified Purchase