Atem X

The green color is for marketing.I thought the same thing.The green hepa is used on several of their machines. On sale you could buy 3 off the Coway Airmega 450's.The Coway 350 lacks the laser sensor,wheels on the bottom,and less airflow. I bought the 450 for less than $350 and the 350 for $239. If odor control is not an issue buy a couple IQAIR Atem X and skip the Atem Earth.

I have several IQAIR Healthpro purifiers.4 of the compact model and 2 of the model with the carbon filters. I also have an Austin Air and 2 Coway Airmega 400's. Recently I bought the 350 and the 450. The IQAIR purifiers are the best quality wise and offer the better filters which filter down to.003. The Coway machine aren't sealed machines but are still ok. You need to see the IQAIR Healthpro in person to make sure they will look ok with your furniture design. I don't mind the cleanroom look. I got the Coway Airmega 450 for about $350 on sale and it moves alot of air but is noisy on the turbo mode. I think you should try them out off Amazon and return the ones that don't work in your home.

I love IQ Air purifiers. I have three now: a Health Pro, which I got some twenty years ago and which put an end within minutes to what in retrospect I understand to have been my first attack of severe asthma; an Atem X I got for my office just a few years ago, hoping it would prevent me from inhaling both Covid viruses and asbestos from a badly-managed asbestos removal happening on the floor above mine; and the little Atem Car, which hasn't made much difference to how I breathe in my car. I have also used a Blue Air purifier, good not as good as the IQ Airs but considerably less expensive. Dupixent has probably made the most difference in controlling my asthma, but for me these machines have also been essential.

Search high CADR purifiers. My recommendation is if you are ok spending the money on an iqair unit, to look at other options since you have multiple rooms. What I see right now is the levoit EverestAir on clearance for $299 from Bestbuy. It is an excellent choice with a high 350 CFM CADR. (I just got 2 more at this price) a “comparable” unit is the levoit core 600s-p(sale price 299 410cfm CADR) if the Everest is not on clearance. I would buy the core at the sale price. Owning both the Everest is better in my opinion. As others have stated multiple units will provide more benefit than one large unit. However again if you are spending that money and like iqair please consider the Atem-X as it has a very high CADR. Another option is the SmartAir blast MKII. This is a beast of a unit that targets commercial applications but is generally at the same price point as the larger IQAir units but proving a much higher CADR. I have one sitting in my 600sqft Great room.

I have the Atem X. 1-8 speeds. 1-2 are silent, 3 is quiet, 4 barely noticeable, 5-6 a moderate fan noise, 7-8 a strong whooshing sound, but nothing a pair of ANC headphones or earplugs doesn't quiet. I usually have it between 2 and 4 and it does a great job.

Iqair has been great

IQAir is the best, but a much higher price category.

Have two different iQair purifiers (on different floors of our house). Have lasted forever and do a phenomenal job. Highly recommend. https://www.iqair.com/