Dominion Mechanical is an award-winning, privately owned, full-service contractor specializing in mechanical engineering, con ... struction, and service of heating, air conditioning, refrigeration, ventilation, and plumbing systems for commercial and institutional buildings, including hospitals and health care facilities. Named by Washington Business Journal as one of the top 50 fastest growing companies in the Washington, DC metropolitan area, Dominion Mechanical also installs and services mission critical data centers. Visit our website to read testimonials from our satisfied clients. read more