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’ve been impressed with how quiet Coway has been. I’ve got the Airmega 350, but I’ve heard most of their models are pretty silent.
What I’ve found too is that even on higher settings, and it being louder, the noise is more of a deeper “woosh” rather than a higher pitch “wish” sound (if that makes sense).
I’ve got the 350, and vacuumed it for the first time a week ago or so. Very easy, no issues, and took about 60seconds. Slapped that bad boy back into the machine and turned it back on.
I’d also recommend vacuuming the outside grills of the 350 too as I found dust can sometimes collect between the grooves too. Again super easy and quick to do.
No
Your Coway Airmega 350 does not have built in PM2.5/CO2/VOC sensors. It has an optical dust sensor (single-channel LED + photodiode aka Sharp/HPMA-like LED scatter sensor). So, the Airmega 350 only monitors airborne dust/aerosol; everything else the purifier does is on a fixed-time or user-selected schedule.
Coway approximates the sensor’s raw value to four qualitative bands based on the Korean AQI standard. Blue light indicates approximately < or = to 35 ugm3. That value equates to 99 AQI (yellow using US AQI color code). There is no safe value of PM 2.5. The laser particle sensor in the real monitor I suggested provides the actual value ug/m3 value on the screen or sounds an alarm or sends you an email at what ever you select. At 5.3 ug/m3 measurable damage starts to occur to your family’s hearts.
Precision: The Qingping’s laser sensor resolves particle counts down to ~1 µg/m³ and repeats within ±5 %. The Coway dust sensor is good for trend detection but not for regulatory-grade measurements.
Location bias: When the purifier is off or on low, almost no air passes the sensor, so the Airmega can under-report the room’s actual pollution until the fan ramps up. A stand-alone monitor has its own micro-fan to ensure steady sampling.
Pollutant coverage: If you care about CO₂ for ventilation control or VOCs for off-gassing, the Coway simply has no data.
see the change) do as good of a job as these dedicated monitors?
Top Air Purifiers on Reddit
1
Coway
Airmega AP-1512HH Mighty
87% positive of 126 users
Durable, effective for allergens/odors, but loud on high.
Annual_Grocery9557
