Bobby serviced our the heating portion of our system during our regular schedule maintenance appointment. Bobby discovered that one of the air duct lines had been cut off and took care of that for us. Now the airflow is so much better downstairs. Bobby also showed me where the valve is located so I know how to fix the problem should it ever come up again. In addition, he made some me suggestions to what we could do to improve the air quality in our home. Since we have 2 people in the house that suffer from allergies, I was very appreciative of the information he shared with me about how we improve the air in our house. Thanks for all your help today Bobby!