What was permitted
A significant mechanical systems project is underway at 281 11 Avenue in Manhattan's Chelsea-Hudson Yards neighborhood. This involves the removal of existing gas-fired rooftop units, split systems, exhaust fans, and heaters, along with associated gas piping.
The permit, issued on August 4, 2026, details the installation of new packaged air source heat pump rooftop systems. The estimated project cost for this extensive upgrade is $4,861,170, with ON-TRAC CONSTRUCTION ASSO listed as the general contractor.
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