Abstract: A respirator system includes a hood, a breathing tube, and an air purification device. The breathing tube is coupled to the hood and has an inner surface coated in an antimicrobial coating. The air purification device is coupled to the breathing tube and is further configured to deliver filtered air to the hood via the breathing tube. The air purification device includes a housing, a back pad, a filter, a fan, a power source, and a controller. The housing includes a front housing component and a rear housing component. The back pad is configured to provide a cushion between the rear housing component and the user's body. The fan is configured to pull ambient air through the filter and deliver the filtered air to the hood. The power source is configured to supply power to the fan. The controller is configured to regulate a speed of the fan.