During this project, we contact HEPA vacuumed 1 existing roof-top air handling unit #1 and all of the ductwork. We also cleaned 26 re-heat coils and all RGDs associated with RTUs 1, 2, 3 & 4. We removed the deteriorated fiberglass duct liner from within a supply duct shaft under each RTU and re-insulated it with 3/4" Armaflex SA Closed Cell duct liner and pin weld in place.
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