If your dryer or tumble dryer goes wrong on a day, how will you fix that? The two main parts that break, are the element and the thermostat. If you feel it is time for your air ducts to be cleaned, contact a licensed air duct cleaners. Another very important reason why dryer vent cleaning MD should not be ignored is because a blocked vent can easily cause fire. Every tool need to be maintained in order for it to function well and last longer.