During the past 30 years, Casteel Heating, Cooling, Plumbing & Electrical has been one of the most respected names in metro Atlanta for heating and air conditioning. Bob Casteel developed this trust and reputation by providing world class service, offering high quality products at affordable prices and backing up his work up with exceptional warranties. Before all the trucks, the employees, and the reputation, Bob and Janis Casteel worked tirelessly to create a customer focused company. In 1987, they started the company with one small red service truck, an office and workshop in the basement of their home, and an advertising budget that included handing out business cards to neighbors. Today, our fleet of trucks and professionally trained NATE Certified technicians are dispatched all over metro Atlanta from our offices in Marietta and Lawrenceville. This type of growth and success is attributed to the thousands of loyal customers that believe in us. Thank you! Casteel is a contractor that meets the highest standards in the industry, including: Trane Comfort Specialist, Air Conditioning Contractors of America (ACCA) Member, Comfort Institute Member, NATE Certified Technicians, Building Performance Institute certified, and we're partners with Lennox.