Heffron Co Inc

Welch and Rushe Inc. is an award-winning mechanical and plumbing contractor based in Upper Marlboro, MD, with over 50 years of experience in the industry. They specialize in delivering high-quality construction and maintenance services with a strong commitment to customer satisfaction and safety across various sectors, including government, industrial, and commercial clients. The company offers a comprehensive range of services including 24/7 emergency HVAC and plumbing assistance, preventive maintenance contracts, and retrofitting mechanical systems. Well-recognized for their work on prestigious projects such as the Pentagon and the World War II Memorial, Welch and Rushe prides itself on strong partnerships and high-quality service delivery to maximize client comfort and efficiency. Generated from the website

Shapiro & Duncan is the culmination of three generations of plumbers and mechanical contractors. In the mid-1930s Jake Shapiro started J. Shapiro Plumbing & Heating in Washington, D.C. After Jake retired, his son, David, a mechanical engineer, organized a mechanical contracting company in 1976 known as Shapiro & Duncan. In the early 90s, David s sons, Jerry and Sheldon, assumed operation of the company. Shapiro & Duncan continues to complete renovation projects but has added new construction, office buildings, government and industrial development projects to its portfolio. It has completed nearly 2,000 projects through the years. The main office in Rockville houses the management, including information technology, purchasing, education, safety, accounting and human resources and construction groups, including estimators, project managers and support personnel, the service department and design-build teams. The fabrication shop is in Beltsville, Md.