The DR-968H comes with silent ultrasonic humidifier built-in to the heater that produces super level of therapeutic comfort that you have never try. The humidifier function adds much needed moisture to dry winter air while distributing warm throughout your entire room faster. Newly engineered and designed in the US， this is one of the best alternative and most efficient heating sources for you this winter. The Dr. Infrared Heater’s Advanced Dual Heating System， combining PTC and Quartz Infrared Element， keeps you warm this winter while saving on heating bills. Equipped with a Dual Heating System and High Velocity Low Noise blower， the Dr Infrared Heater increases the heat distribution and transfer rate and the result is heating your room to a comfortable temperature， fast. The Dr. Infrared Heater is certified by Underwriters Laboratories (UL) USA and Canada， ensuring the highest safety standard. The Dr. Infrared Heater is perfectly safe around children and pets and only gets warm to the touch. It does not have exposed heating elements that can cause a fire. The Dr. Infrared Heater comes with Energy saving Auto Mode， high and low setting when the mode is set to Auto， the unit will cycle on and off and switch between high or low setting to maintain the desired temperature setting. With its unparalleled heating capabilities， safety design， energy efficiency and quietness， Dr. Infrared Heater is simply the best choice for your home heating needs.