This is a Sources Sought Notice for market research only, not a solicitation for bids, to identify qualified small businesses for an HVAC repair and upgrade project at Building 320, Area A, on Laughlin Air Force Base, Texas. The project involves replacing air handler units, ducting, and VAV boxes in a 107,068-square-foot facility, with a construction magnitude between $1,000,000 and $5,000,000. Interested firms must submit a capability statement by the response deadline, including company details, business size status under NAICS 238220, and up to three similar projects completed in the last five years valued between $1.5M and $3M. Submissions must also confirm bonding capacity for up to $3,000,000 and compliance with subcontracting limitations requiring the prime to perform at least 25% of the work. No budget amounts are specified beyond the construction magnitude range, and no bid or submission deadlines are included.