Does the area (1256 sqft) need to be one open area or can be split into multiple rooms with doors open ?

Well first off no real air purifier expert would tell you to use the 1256 sq.ft. You want a minimum of 5 air changes per hour (ACH) and 1256 only provides about 2. If you are truly looking for the benefits of air purification then you should be looking at 500-700 sq.ft and no more. With that said, you lose efficiency if it has to go to multiple rooms and thus less ACH. Unless you have an industrial Air purifier built into your HVAC system at your house you should think about limiting one air purifier per room (with the appropriate amount of power to handle it).

I'm getting a shipping error for California. Why is there a restriction to ship to California? It doesn't go over the dimension or weight max.

California bans electrostatic air filters because they produce unsafe amounts of ozone. Ozone damages your lungs. This also might be an Amazon problem, where they take reviews for similar products and stick them all together. I'm not sure the Airmega 400 has an electrostatic system in it. I don't see the no shipping alert on its Amazon listing (I live in California) but I see it on Healthmate HM-400 listing. The Wirecutter did a whole article and missed the electrostatic filter, so thanks CA. Electrostatic filters are very effective at removing particles but they produce ozone. If you're tired of smelling chicken poop, moving from a chicken ranch to an oil refinery would work, but.....

Does this work well to remove pet odors? It is so hard to hard to find any straight forward answers about odor removal on any of these higher end unit

I love it. I have a very sensitive nose and breathing. Works great for pet odors! I need one for the other side of the house. Worth the investment. I've tried some of the other $200-$300 purifiers

Will this work for oil painters - i need it to help with the removal of vocs such as turpentine and mineral spirits?

NOT good at all. I wish I could say otherwise since I own this product. I have 3 different instruments that measure VOCs. DO NOT depend on this product for VOC removal. I bought the Conway and the VOC testing instruments because I am a victim of VOC poisoning in my living space. After zeroing the testing instruments and getting baseline VOC measurements, the Conway did nothing to reduce them - even at the highest fan setting after 24 hours. I still love the Conway though as it does a SPECTACULAR job at reducing a full range of microparticulate matter.

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🌿 Breathe smarter, live better—your air’s new best friend!

SMART APP CONTROL - Seamlessly manage air quality from your phone anytime, anywhere.
ULTRA WIDE COVERAGE - Purifies large spaces up to 1,256 sq. ft. for whole-room freshness.
WHISPER QUIET OPERATION - Runs at just 22 decibels—peaceful air purification without disruption.
HEPA CERTIFIED FILTRATION - Advanced filter technology captures 99.97% of airborne pollutants.
REAL TIME AIR QUALITY INSIGHTS - Stay informed with live indoor and outdoor air quality reports.

The AIRMEGA 300S by Coway is a smart, app-enabled air purifier designed for expansive spaces up to 1,256 sq. ft. Featuring certified HEPA filtration, ultra-quiet 22 dB operation, and real-time air quality monitoring via iOS and Android apps, it empowers professionals to maintain optimal indoor air quality effortlessly.

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Colour	White
Brand	Coway
Floor Area	1256 Square Feet
Specification Met	Certified HEPA
Noise Level	22 Decibels
Controller Type	Android, iOS
Wattage	57 Watts
UPC	773838107042 826439150020
Global Trade Identification Number	00826439150020
Manufacturer	COWAY
Color	White
Shipping Weight	12.29 Kilograms
Item Model Number	AP-1515G
Item Part Number	111359
Is Assembly Required	No
Capacity	1256 sq. ft.
Number of Pieces	1

AIRMEGA 300S The Smarter App Enabled Air Purifier (Covers 1256 sq. ft.)

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