General HVAC Retrofit

Tres West Engineers has a solid background of HVAC retrofit experience, to include both wet and dry systems. Our firm can efficiently provide design for both small and large projects, from 2,000 CFM to 200,000 CFM. We have the capability to accurately model air and water flow, depict mechanical system installation in both two and three dimensions and as-build complicated systems and structures. The following are some examples of our work.

	King County Yesler Building HVAC Examination, Seattle, WA The Yesler Building is a historic landmark in downtown Seattle. The building was constructed in the era of steam heating, and was retrofit with a modern HVAC system in the early 1980's. The building is currently owned by King County, and is used for administrative office space. Tres West Engineers conducted a study/evaluation of the building HVAC systems. The goal of this study was to program the HVAC improvements needed to correct HVAC deficiencies and bring the operation into conformance with current codes.
	Qwest Communications - HVAC Renovations Tres West Engineers has provided mechanical and electrical design services to Qwest Communications and its predecessors since 1989. Qwest operates numerous switching facilities throughout the Western US. Reliable space cooling is required to keep these systems online. Most of these projects include renovations and retrofits and include air handling systems, chilled water systems, and DX cooling systems. Tres West Engineers has completed projects at Auburn, Renton, Bellevue, Seattle, Tacoma, Sequim, Rochester, Bellingham, Shelton, and other sites.
	General Administration Building HVAC Improvements, Olympia, WA The General Administration building is on the Capitol Campus in Olympia. This 280,000 square foot building houses many administrative offices for essential state services, such as Department of Revenue, the Washington State Patrol, and the Division of Engineering and Architectural Services. Tres West Engineers, as prime design contractor, provided design services to replace the central HVAC systems in the north and south penthouses. The replacement had to occur while the building was occupied, with minimal disruption to normal activities. The project was completed in May of 2001, on time and under budget.

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