Founded in 1986, M S Heating & Air Conditioning is family owned and operated by Marshall Shiley, Jr. and his wife Michelle. We are a 2nd generation business. Marshall, Jr. purchased the company from his father when he retired in 2005. For over 30 years, we've been installing, repairing, and servicing heating and air conditioning systems in Frederick County and it's surrounding areas. In those years, we've proudly developed a strong and loyal customer base that we strive to deliver quality workmanship and outstanding customer service to. So, whether it's service or installation that you need, we look forward to hearing from you! 


Marshall and Michelle


Ryan, Marshall and Jonah (left to right)


We Accept:

PO Box 653, Stephens City, VA 22655       (540)-869-0089