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The primary sources of these particles include dust, pollen, pet dander and mold among other airborne allergens. Particles range in size and can be small enough to travel into the lungs. Both Honeywell QuietCare and Enviracaire Air Purifiers (the primary division between smaller- and larger-size Honeywell purifiers) utilize two types of filters. The true HEPA filter removes up to 99.97% of common household particles as small as 0.3 microns in size from the air. The carbon pre-filter traps larger-sized air particles, including dust, lint, fibers, and pet fur, while also deodorizing the air.
And with my own recent move to the Denver metro area, I understand the need for a solution to poor air quality days. That’s why I was excited to write a Honeywell air purifier review for the HPA300 model. But how does this moderately priced air purifier perform?
In 2017, we created wildfire conditions in our Los Angeles office and tested several purifiers. Using bunches of incense sticks, we created a thick haze of smoke in the room—which was four times larger than what the Coway is designed to be used in. It still dropped the pollution by 70% in under an hour, performing as well as some purifiers intended for extra-large spaces. When considering a new purifier, we first refer to manufacturer-supplied specs on airflow (usually given as a clean air delivery rate, or CADR). We compute the air changes per hour, or ACH, they can provide in hypothetical rooms of 150, 350, and 500 square feet (assuming an 8-foot ceiling height).
Unfortunately, the carbon in the pre-filter is no longer effective for removing smoke and odors after three months. However, despite the carbon no longer being effective, the polyester will continue to honeywell humidifier trap visible particles. Once the Honeywell Intelli-Check Monitoring System displays a dirty pre-filter warning, users are advised to replace the pre-filter for optimal and effective air purification.