Respirators are masks used to protect people from inhaling dust or gases. It's a common mistake made in television and movies to call a ventilator a respirator. Ventilators are the devices used in hospitals, extended care facilities, and in some homes to support patients who either can't breathe on their own or have difficulty breathing.
Ventilators do not run 220 volts; they run on the standard 110 volt system seen in all institutions and homes.