Post-Construction HVAC Cleaning Jersey City Public Library

After a top-to-bottom renovation of a historic public library in Jersey City, we were tasked with post-construction duct cleaning so the new HVAC system wouldn’t circulate drywall dust or silica residue. The trickiest part was elevation: the main trunks run 35 feet above the nave-like reading room, and the new clerestory ceilings left almost no catwalk access. We broke the system into six sections, erected custom scaffold towers, and deployed HEPA-filtered negative-air machines at each air handler. Rotary-brush and skipper-ball agitation pulled debris out of the high trunks and long branch runs feeding the children’s wing, archives, and computer lab, while coils, drain pans, and condensate lines were flushed and treated with EPA-registered biocide. Final borescope footage and particulate sampling satisfied the commissioning team, clearing the library for reopening without any elevation-related delays.