Mechanical Contracting


Commercial/Government Mechanical/HVAC

Martin J. Braun delivers comprehensive commercial Mechanical/HVAC solutions for new construction and renovations. Our experienced team of project managers, supervisors, foremen, sheet metal workers, pipe fitters/plumbers, welders, and insulators assure you an efficient, quality installation that performs as designed. With our extensive in-house fabrication and partner vendors, our delivery of materials guarantees your project stays on schedule.

  • New Construction
  • Building and Space Renovations
  • System Design & Installation
  • Boilers, Chillers, Pumps
  • Full Mechanicals Room
  • Rooftop Units
  • Pipe Fitting & Welding
  • Sheet Metal Duct Systems
  • Commercial Refrigeration
  • Insulation
  • Smoke and Fire/Smoke Dampers
  • HVAC System Replacements
  • Preventive Maintenance
  • Specialty Installations

Campus & Building Utility Plants

Martin J. Braun has experience with both campus sized and building sized chiller & boiler plants. We have installed all sizes of both air-cooled and water-cooled chillers as well as condensing and non-condensing boilers. We are fully capable and experienced with gas, chilled water, hot water, steam, and condenser water piping including full insulation. Our pipe fitters and plumbers are experienced and certified in weld, flanged, threaded, soldered, and brazed joinery.

  • Chiller Plants
  • Boiler Plants
  • DOAS Units
  • House AHU’s


Martin J. Braun is fully qualified and experienced in all types of plumbing systems, including water supply, drainage, gas, mechanical services for all types and sizes of bathrooms, kitchens and building infrastructure. We have the experience and resources to supply and install all types of fixtures and equipment.

  • Bathrooms
  • Kitchen/Cafeterias
  • Underground
  • Backflow Prevention and Testing


Martin J. Braun has experience in several unique and specialty installations. Our vast resources of both in-house experience and long standing partnerships, imbue us with the knowledge and skills with which we provide high quality and timely installations. In addition, our MJB Team has been thoroughly vetted, allowing us to successfully and efficiently complete projects in the most difficult, unique, and high security facilities.

  • Historical Facilities
  • Government Facilities: Social Security, State Department, Homeland Security, DoD, DOJ
  • Medical Gas/High Purity Gas
  • Data Centers Infrastructure & Fit-Up
  • Mission Critical Infrastructure & Fit-Up
  • RF & Anechoic Chambers

Teaming & Partnerships

Martin J. Braun has a proud history of partnering with owners, customers, GC’s, engineers, and other contractors to support their missions and goals. We have traveled across the country (CONUS) as well as overseas (OCONUS) for unique and highly specialized projects. The quality and timeliness of our work has developed our reputation as the “Go To” mechanical contractor.

  • Design-Build Teaming
  • Owner Direct Contracting
  • Specialty maintenance agreements