Fellowes AeraMax 300 Large Room Air Purifier Mold, Odors, Dust, Smoke, Allergens and Germs with True HEPA Filter and 4-Stage

(10 customer reviews)


Color White
Brand Fellowes
Item Weight 12.5 Pounds
Control Method Touch
Filter Type HEPA

  • 4-stage hospital-type filtration: effectively purifies air in large rooms 300 – 600 square feet
  • AeraSmart sensor: monitors the air quality and automatically adjusts the fan speed to keep your air purified
  • True HEPA filter with AeraSafe antimicrobial treatment: safely removes 99.97% of viruses, germs, allergens, mold and dust
  • PlasmaTrue Technology: optional setting that utilizes ionization to help safely remove airborne pollutants
  • Aera+ mode: increases air change by 35% for allergy and cold/flu seasons  


The Fellowes AeraMax 300 Air Purifier uses 4-stage hospital-type filtration to effectively purify air in large rooms 300 – 600 square feet. The AeraSmart Sensor monitors the air quality and automatically adjusts the fan speed to keep your air purified with ultra-quiet operation. A True HEPA filter with AeraSafe antimicrobial treatment safely removes 99.97% of airborne particles as small as 0.3 microns, including viruses, germs, pollen, ragweed, mold spores, and other allergens, while a carbon filter removes odors and captures large airborne particulates. AeraMax PlasmaTrue Technology is an optional setting that utilizes ionization to help safely remove airborne pollutants. AeraMax Air Purifiers also features Aera+ Mode for 50% more air exchanges during allergy and cold/flu seasons.

From the manufacturer

Fellowes AeraMax 300 Large Room Air Purifier

Indoor air can be up to 5x dirtier than outdoor air. Breathe easy with an AeraMax air purifier in your home or office to remove 99.97% of airborne contaminants.

Fellowes AeraMax 300 Large Room Air Purifier

Fellowers AeraMax 100 Small Room Air Purifier

Fellowers AeraMax 100 Small Room Air Purifier

Fellowers AeraMax 100 Small Room Air Purifier

Effectively purify any room in your home or office with AeraSmart technology that monitors the air quality and automatically adjusts the fan speed to keep your air purified.

Designed for peak allergy season or high traffic areas, the Aera+ Mode setting increases air turnover rate by 50% to maximize air purification.

For added reassurance, the True HEPA filter includes AeraSafe antimicrobial properties to ensure pollutants are not re-released back into the air and to prevent bacteria growth on the filter.

Fellowes AeraMax 300 Large Room Air Purifier

1. Carbon filter removes odors and captures large airborne particulates

2. True HEPA filter safely removes 99.97% of viruses, germs, allergens, mold and dust

3. AeraSafe antimicrobial treatment prevents bacteria growth on the filter to ensure pollutants are not re-released back into the air

4. PlasmaTrue setting utilizes ionization to help safely remove airborne pollutants

Additional information

Weight 12.5 kg
Dimensions 8.13 × 16 × 25 cm




Control Method


Filter Type


Floor Area

600 Square Feet

Noise Level

4 dB

Product Dimensions

8.13 x 16 x 25.13 inches, 8.13D x 16W x 25H

Item Weight

12.5 Pounds



Domestic Shipping

Item can be shipped within U.S.

International Shipping

This item can be shipped to select countries outside of the U.S. Learn More

Country of Origin


Item model number


Material Care Instructions

Hand Wash

Assembly Required


Number Of Pieces


Warranty Description


Batteries Required


Included Components

air purifier



10 reviews for Fellowes AeraMax 300 Large Room Air Purifier Mold, Odors, Dust, Smoke, Allergens and Germs with True HEPA Filter and 4-Stage

  1. Shari M.

    Confidence in this air purifierI like knowing I am breathing air that is purified for allergies.

  2. Nicole Hatton

    Air purifier evangelistThis is our second Aeramax 300. The first one served us faithfully for 8 years and I sent it off with my son to keep his dorm room from getting smelly. He wanted to take it because it has a powerful fan. It’s never off. I move it around every few days from room to room. I love this hard working appliance because it really cuts down on odors and allergies and sore throats.

  3. Lindsey

    Works Great! Bought 2!Bought one at first based on a friend’s recommendation and placed it in my bedroom. I have had nothing but terrible seasonal allergies the last few years and needed something to help on top of the pet dander from my cat, I would wake up with a scratchy and dry throat, sneezing, coughing, you name it. I noticed an improvement in a few days that I was starting to sleep better and I would wake up with less and less symptoms until finally I no longer had any. The dust amount in my room is near nonexistent now. After 4 months trial run, I decided to get another one for the living room now!Filters – I just changed the carbon filter on the first one for the first time and oh boy was it filthy. I’m curious to see how bad the HEPA filter will be once it comes time to change it. Compared to the cost on other filters on other units, I find this fairly more affordable in the long run as you only change the carbon once every three months and the HEPA once a year. Amazon sells the carbon filters in a 4 pack for $33, which will last you an entire year. And then the HEPA costs $37. About $10 cheaper than dyson filters when I was originally looking at those units. Or if you really want to save pennies like my friend, just vacuum off the carbon filter every 3 months (obviously not recommended by the manufacturer but hey, he’s done it for the last few years he’s owned it and it still running strong) and only change the HEPA once a year.Noise level – I like white noise. I’m one of those people that sleeps with a fan on all year round just for the noise. On the lowest setting, it’s much less than my regular tower fan. You can hear it when it shifts to medium or really hear it on high but mine typically run only on low and medium and I let them run 24/7. I don’t find this as annoying as on high personally. It depends very much on your air quality and if you let it run consistently or just only turn it on when you need it.Size – surprisingly thinner than I expected but I love it. Doesn’t take up very much room at all.My only gripe so far is the placement of the filter buttons on the unit. I feel they are too close together. When it comes time to change the carbon filter and you try to clear the change filter light, you find yourself accidentally hitting the HEPA filter one instead and have to start the process over to clear the Carbon light. Maybe a remote or a wider distance between the two filter buttons in future models would be super helpful to clear the filter indicating lights.So if you’re looking for something to help with pet dander and pesky seasonal allergies, look no further and give this brand a try, you might just like it as much as I do now.

  4. Rick


  5. Grace

    WONDERFUL if you don’t mind light! UPDATE after 4 years…* OVERALL: This makes the room smell reminiscent of a health facility because it makes the air so clean and has noticeably improved the number of sinus infections I get.* Noise: it can get loud on level 4+ but that is because it’s taking in and pressing out a lot of air. At 2 or below, it’s quiet enough to watch tv alongside and still be able to hear. At level 3, you could get by with turning the tv up slightly. For conversation in the room, fan speed 3+ is a no go.* The Ionizer: The ionizer can be turned off by holding down the bottom blue button with the star on it, which I always keep turned off. Since the mere presence of an ionizer and plasma tech can release ozone even when not in use, I wish I could remove it. Ozone means particles are larger, heavier, and stick to the insides of your lungs more easily. This causes lung irritation and keeps irritants within the lungs more securely and for longer periods of times. You generally don’t want to breathe ozone in you have no respiratory issues, and if you have lung sensitivity, allergies, asthma, COPD, etc., you’re really going to want to avoid it entirely.* Size: The unit is big, about 2.5′ tall, and the air intake is on the sides.* LIGHT ISSUE: I wish the lights that illuminated the buttons could be turned off at night, as the light keeps me awake (blue light). I’ve resorted to covering it with some fabric, which covers the import and export vent slightly. AERAMAX, PLEASE provide an option to turn off all the lights. The light shines from the buttons, and also shines out the sides of the device through the intake vents in a darkened room. Any light disrupts melatonin production, and blue light is the worst suspect. After over a year of 24/7 use, I’m buying another brand of air purifier just to alleviate this issue of fighting with the light emanating from the machine.* Weight: Heavy. This is not something you’re going to want to move from room to room. It has a handle for carrying it if needed, but you’re going to want to leave it where you left it. Since it’s wide and narrow and tall, and thus tippy, you’re not going to want to attach wheels or place it on a wheeling base to combat the weight of moving it.* Filters: The carbon filters appear to need replacing twice as often as the HEPA filters.* Aesthetics: I would have appreciated the black areas of the unit being white, to lend a more sleek and modern vibe, as it looks more like a 1990’s space capsule with it’s shape and contrasting black and white. Something about Nintendo comes to mind, and ET.* Structural Design: I love that the vent that blows the clean air is at the top, and can be tilted and directed where you want it. You can aim it to blow right at your face if you have a sinus headache and/or breath clean air while you work on the computer or watch TV.* Longevity/Quality: 100%. I have used this device 24/7 at fan speed 3 for over a year and it’s still going strong. It’s gone through 3 HEPA filter changes, and 4 carbon filter changes, not always replaced on time ;)UPDATE:After 4 years and 4 months of 24/7 use on fan speed 3, this air purifier LIVES. It has no issues whatsoever and works perfectly. A+ for quality! I resorted to covering the lights with black electrical tape. This means that every time I move it to another room and turn it on again, I have to lift the tape at the bottom and press the ionizing light to turn off the ionizer, then press the tape back down while trying not to trigger the other buttons. The light from the other lit buttons is slightly visible from the sides where the intake vents are located. I have no complaints about this item except for the lights. It could be quieter as well, if I’m being particular, but the required CFM for an air purifier to do well really requires that it moves a lot of air, which makes noise.

  6. T. Mercer

    Quiethome air purifying

  7. Paul Flood

    Best home filter I’ve ever purchased. 6 years strong!This air purifier works great, I bought it in 2016 and it’s now 2022, that’s 6 years of nearly always on use! Seriously, I’ve only unplugged it for like a month or 2 total in its life. Filters aren’t too badly priced and they do seem to work very well. (there are 3rd party filter packs that work well too!)Very quiet for the first 3 settings and the highest setting is loud but wow it moves air like no other! The Auto and Auto plus work very well, changing speed when needed. Auto plus just uses 1 level higher than standard auto for a little extra power.Great for someone who is a smoker or has asthma or other breathing conditions, keeps basements smelling nice. And really helps if you have , cats, dogs, other animals.There is virtually no dust in my room with the filter, it really does a great job of capturing it. Every other week I remove the filter and vacuum the charcoal pre-filter to remove the pet hair/dust, this really helps keep the machine running well.I have taken this air purifier apart for a deep cleaning but it wasn’t too bad inside, the hardest place to clean is the space right in front of the filter intake, it’s hard to get anything in there to clean so it just collects dust, that’s why I opened it to clean it. Opening it is not too hard if your handy, but I’d wait until the warranty runs out just in case.No issues to report either, it has just always worked, which is impressive.I really do recommend this product, the price is well justified.

  8. MJ Grenier

    Review after 1 yr of operationSo I waited for one year to actually write up a review. I put the Area Max 300 to the test when I started using it. After leaving the unit running for three months straight, the change filter light popped up, which simply meant that it was time to change the carbon filter, not the HEPA filter. The carbon filter takes the brunt of the filtering. The HEPA filter change light indicator did not show up, even after a year of running, and this is partly due to me changing out the carbon filters when I was prompted by the unit.The quality of the carbon filter is amazing, so the air is thoroughly scrubbed after running all day. I was happy that I did not spend a $1,000 on an air purifier.So, again, I did not need to change the HEPA filter until I used up all the carbon filters. I had four carbon filters in the box, and I would change out each carbon filter every three months. At the end of the HEPA filter lifecycle, I examined the HEPA filter and was impressed how heavy it weighed. There was just a lot of dirt inside of it — period. I am assuming what was caught in the HEPA filter was the very fine particle dust that sneaked through the carbon filter. After one year of operation, the HEPA filter proved its worthiness.There is one tip that I would like to share. After you change out your HEPA filter, bring the unit outside and take an air blower to the Area Max. I mean, get in all around the inside without damaging it. I noticed when I used my blower, a lot of dust came out. So after making a few passes with the air blower, I put the new filters in and programed it to start running. I don’t run it all day like I used to. I now have a smart plug that shuts off the unit after 12 hrs of operation. I’ve noticed a major decrease in dust . . . of course. I love the air quality.

  9. El

    Works, time saverUpdate: I’ve had Air2-D2 for around a year. We also bought the Pure Zone 3-in-1 filter a month before this one.Reasons we bought this: I’m a live in caregiver for a woman in a minimally conscious state who has a weakened immune system and allergies. The household went from 2 cats to 5 last summer and the allergy meds my patient and her husband were taking became insufficient in keeping up with their cat allergies. In addition, I have a severe dust allergy and couldn’t go longer than a week without doing a full house cleaning with a mask and gloves or I’d start having severe coughing fits. I have a family history of lung cancer and am a bit paranoid about the air I’m breathing.House description: One story 3 bedroom 2 bath, fairly open floor plan, UV protected windowsIn short, we all love this air filter. It reduces the allergies significantly, is fairly quiet on the lower settings, has easy to replace filters, and reduces times in between cleanings. At first we kept this only in the center of the house in the living room, but after seeing how much it reduced dust in that room we started to rotate it to different rooms. It definitely doesn’t not have the intake power to clean an entire one story house from one room. I can go a month now without cleaning and the dust doesn’t get to me. When I do clean now, there’s less dust after a month than there was after a week before. It feels generally easier to breathe in the house now and the air always smells fresh without having any sort of scent. My patient has not been ill once since we got the air filters. I’m not certain that the filters have anything to do with this, but it’s worth noting.It also has made us a bit more mindful about what cleaning products we use. I noticed that when cleaning with aerosol products the light will turn red after about twenty minutes even if I’m two rooms away. I had no idea my cleaning products traveled that far in the air.How it compares to the purezone 3-in-1: We keep the PZ in the master bath where the catboxes are and it does an amazing job at keeping litter dust and odors under control. The PZ does not have any indicator on it about the air quality though, so we only really turn it on high when cleaning the boxes. For the month that we had the PZ in the living room before we got this one, the range didn’t seem nearly as good and while it was slightly less dusty, it wasn’t significant enough to change how often I cleaned. Mainly because it only picked up dust and not a lot of cat hair. The PZ is much more efficient in a small room.

  10. Ashleysue

    It definitely works but I wish you could turn off the bright lights at night.Do you have dust in your house, pets or allergies? Well then it’s time to get an air purifier. This is a great investment into your health and is built to last a lifetime. This size machine will purify the air for up to 500 sq ft! I love cooking steaks on a cast iron skillet but live in an apartment and needless to say it gets smoky! AeroMax works quickly, quietly and effectively to purify and it clears out the kitchen smoke in less than a minute. I love the automatic mode because you can save power and electricity when your air is perfectly clean and the machine is smart enough to know when it needs to be kicked into high gear and refilters the entire room in minutes. I know some comments talk about a high pitched squealing- that’s from the plasma filter. You can change it to run the Hepa filter instead or turn it off. This purifier guarantees that there won’t be any negative ions but they allow you to not risk it and shut it off. For those people who are sensitive to noise turn it off the plasma option at night, my dog doesn’t seem to mind the sound either way and I don’t notice the squealing during the day.-The only con I have about this device is that I wish I could turn the lights off on it! They thought of everything else why not add that feature? The lights are huge and extremely bright blue, equivalent to a child’s nightlight. Let’s just say I’ll never stub my toe again walking to the bathroom at night with this thing on- it’s that bright. Your brain cannot fully go into rem sleep with bright light and it was effecting my sleep. unfortunately I cannot throw a blanket over it because it covers the intake and I cannot tape something over the 5 lights because this machine is extremely touch sensitive. So maybe it would be good in a kids room or if you didn’t mind sleeping with your room illuminated.Other then that it works great, I love watching it work while I’m vacuuming or dusting really takes care or those airborne particles.

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