The 74,000-square-foot project at the U.S. Navy’s premier Pacific Northwest naval aviation installation included the renovation of a 43,000-square-foot hangar and administrative building; and construction of a new adjoining 31,000-square-foot, two-story addition. Together, the renovation and addition provided space for maintenance, building support, squadron tactics and administrative offices to accommodate the Navy’s EA-18G Growler aircraft and squadrons. The energy-efficient facility is expected to achieve LEED Silver Certification by the US Green Building Council (USGBC).

Wiegmann’s scope of work included HVAC, plumbing and radiant heat systems, and high- and low-pressure air systems to deliver compressed air throughout the facility and the flight line for tools, work stations, aircraft cooling and pressure testing. They removed an existing steam and two-pipe heating system, retrofitted the existing two-story office building with a new HVAC system, and renovated plumbing throughout the building.


Wiegmann Associates is a St. Louis-based mechanical contractor serving the commercial, industrial and institutional markets, and a national leader in design/build HVAC projects.  Since 1995, Wiegmann Associates has engineered and installed innovative, energy saving and cost-efficient HVAC solutions and automation controls for clients in a wide range of industries. Wiegmann also provides 24-hour preventative maintenance programs and service in the St. Louis region. Wiegmann is ranked among the top 50 specialty contractors in the Midwest by Engineering News Record and the top 10 largest mechanical contractors by the St. Louis Business Journal. For more information, visit or call (636) 940-1056.

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Photos courtesy The Korte Company

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Mary Schanuel