Airfree Air Purifier, Onix3000, Black Recommended room size: 650 ft. Voltage: 110 - 127 V With exclusive Patented Thermodynamic TSS Technology, Airfree applies the same concept as boiling water by using heat to destroy microorganisms and attains 100% efficiency at the Airfree air outlet. Airfree destroys mold, allergens, dust mites, bacteria, viruses, pollens, pet dender, tobacco, ozone and other organic pollutants.	*Filterless technology: No extra costs with replacement filters. It is completely silent;Tilt sensor Kindly refer the user manual's given below for troubleshooting steps.