Backflow Technology

Commercial Express HVAC provides heating, ventilation and air conditioning solutions to facility owners, managers and operators. Its services include preventive maintenance, budget analysis, energy and comfort-improving retrofits, 24-hour, seven-days a week emergency repair services, equipment replacement, design and build installations, and indoor air quality diagnosis. It also offers mechanical, electrical and structural engineering and permits, equipment rigging, roofing, power wiring, gas piping, ductwork, temperature control systems, equipment startup and commissioning, and follow-up preventive maintenance services. The company s technicians receive industry training, and the company has well-stocked trucks, supported with state-of-the-art tools and technologies. The company s technicians service all manufacturers brands and types of equipment, including package rooftop units, air-cooled split systems, water-cooled heat pumps, gas-fired equipment, chillers, boilers, pumps, and computer room air conditioning units. Commercial Express HVAC is located in Chantilly, Va.

Heffron Company Inc., based in Kensington, MD, is a highly specialized mechanical and plumbing contractor with over 103 years of experience serving the Washington Metropolitan region and the East Coast. Founded in 1922 by Joseph Heffron, the company has established a strong reputation for quality and excellence, focusing on building relationships with clients across various sectors including biotechnology, education, healthcare, and government. Heffron's Construction Department is dedicated to installing energy-efficient mechanical systems, while the Service Department specializes in troubleshooting, repairs, and preventative maintenance for HVAC and plumbing systems. The company prides itself on completing projects on time and within budget, all while upholding core values of respect, dignity, and loyalty that have been central to its success for generations. Generated from the website

Headquartered in Manassas, Va., Acme Mechanical Contractors of VA specializes in heating, ventilation and air conditioning services. The company offers a range of services that includes installation, renovation, construction, repair and replacement of heating and air conditioning equipment. It provides plumbing, mechanical piping and sheet metal fabrication services. It also specializes in the installation of ducts and vents. The company offers services to a variety of clients, such as schools, churches, offices, warehouses, and commercial and industrial facilities.