Question 1

At low speeds i hear a ticking or clicking sound, not quite a rattle, coming from the motor. Might be motor noise. Is this common? It's pretty loud.

Accepted Answer

I hear the noise too. I received mine today, and the noise doesn't really bother me. I'll see how it goes. If I can't tolerate it, I'll return the product. It sits in my living room, next to my couch. So usually the TV will drown out any clicking/ticking/rattling. Plus the fans/air kinda mask the noise. I don't really expect it to be a problem. It's likely the motor. I bet all units sounds the same.

Question 2

Fan/motor noise mentioned in numerous ratings.  This suggests cheap bearing(s) - probably sleeve type, not ball bearing. Anyone have fan/motor seize?

Accepted Answer

I heard Levoit will be releasing quieter 600S models in the future to address the motor noise. The older 600S models are already being phased out. I talked with Levoit customer support myself.

Question 3

For a 1400 sqft two story house, is one of these enough, or is it better to have a smaller one per room, or one per floor?

Accepted Answer

I have a condo, about 800 SQFT. I have a 600S in the living room that cleans the whole condo, if I leave all the interior doors open. I put a smaller 200S in my bedroom, so I can still have purified air while the door is shut. So, incase you want to live with all interior doors open, you'll need to buy smaller units for rooms where you regularly close the door for extended periods of time.

Question 4

For the everest air model, which of the sensors pm1,pm 2.5,pm10 will tell you that  you may have mold in the air?

Accepted Answer

The PM value (1.0, 2.5, or 10) refers to particulate matter (PM) less than or equal to 1, 2.5, or 10 microns in size. Please note that mold can vary in size and the sensor cannot distinguish different types of particles.

ASIN	B0BHT3DQ8D
Best Sellers Rank	#260,336 in Kitchen ( See Top 100 in Kitchen ) #538 in HEPA Air Purifiers
Brand Name	Levoit
Color	Gray
Contaminant Filtration Capability	Dust, Pollen
Control Method	Voice
Controller Type	Amazon Alexa
Customer Reviews	4.6 4.6 out of 5 stars (584)
Edition	PuroAir 240
Filter Class	Carbon
Filter Type	Activated Carbon
Floor Area	2933 Square Feet
Included Components	AIR_PURIFIER
Item Dimensions D x W x H	27.2D x 27.2W x 52.2H centimeters
Item Length	12.3 Inches
Item Type Name	AIR_PURIFIER
Item Weight	13.7 Pounds
Item Width	12.3 Inches
Manufacturer	LEVOIT
Model Number	LAP-C601S-AUS
Noise Level	26 Decibels
Number of Packs	1
Part Number	LAP-C601S-AUS
Particle Retention Size	0.3 Micron
Power Source	Corded Electric
Special Features	Manual
Specification Met	CARB Certified, ETL Certified, FCC Certified
UPC	810043378444
Unit Count	1 Count
Warranty Description	2 year
Wattage	66 watts

LEVOIT Air Purifiers for Home Large Room, Covers Up to 3175 Sq. Ft, Smart WiFi and PM2.5 Monitor, 3-in-1 Filter Captures Particles, Smoke, Pet Allergies, Dust, Pollen, Alexa Control, Core 600S, Gray

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