The government intends to award a firm-fixed-price commercial construction contract on a sole-source basis to the original construction contractor for specialized mechanical and software re-configuration of an existing HVAC system. The scope includes reprogramming chiller controls, integrating piping and variable frequency drives, testing and commissioning the combined HVAC/ERU loop, and verifying building automation system compliance. Sole-source justification is based on preserving active manufacturer warranties and the contractor’s unique technical familiarity with the installed systems, which avoids duplicative costs and delays. This notice is not a request for competitive quotes, but responsible sources that believe they can fully meet the requirement may submit a capability statement, proposal, or quotation for consideration. Submissions must include company identification, a technical narrative demonstrating warranty-safe performance, and a pricing quote.