A week ago, I purchased a Blue Pure 411 Auto air filter. It has an automatic setting where the unit measure the “dirtiness” of the air, and adjusts the fan setting accordingly. I usually leave it on auto, and the fan setting has been on low this entire time.
I also have a humidifier that I used quite often, but have not used it recently. Yesterday, I filled the reservoir with water and turned on the humidifier. It was place about five feet from the air filter. I believe the air filter detected the water vapor, thought it was a pollutant, and kicked the air filter fan to high. At first I did not notice anything, but became aware of the loud fan noise. The air filter is very quite on low, but definitely not quiet with the fan on high setting.
Look like I cannot use both units at the same time…
Life with chronic diseases 