Capitol Boiler Works, Inc. has served the greater Washington DC Metropolitan and the Mid Atlantic region since 1936.  We are available to handle a wide range of HVAC, plumbing, mechanical, electrical, and heating requirements. Whether it is a custom design-build project, emergency or routine repairs, a planned equipment retrofit, or equipment rebuild that you need, we will respond promptly and with the right technician or sales engineer for the job.

Capitol Boiler Works offers a variety of mechanical services.  We offer true 24/7/365 emergency service in Burner Controls, Welding, Plumbing, HVAC, Pumps, and Electrical.  All emergency calls go to a management representative of Capitol Boiler Works, not an answering service.  We offer a fleet of portable boiler and domestic hot water equipment based at our facility in Springfield VA.  We have a fabrication facility specializing in tube and shell heat exchanger custom fabrication on an as needed and emergency basis. 

Our service categories: 

• Electrical
• Pumps
• Air Conditioning
• Mechanical Insulation
• Heat Exchangers
• Refractory
• Plumbing
• Boilers
• Portable Boiler Units
• Fabrication
• Welding
• Burners
• Service Contracts
• Classroom Training