This is a new Design-Build project to replace and upgrade the end-of-life HVAC system in Building 462 at Tyndall AFB. The prime contractor must perform at least 25% of the cost of the contract (excluding materials) with its own employees due to the specialized trade work involved. The NAICS code is 238220 with a size standard of $19,500,000 in annual receipts. This is a 100% Hubzone Small Business set-aside. No budget amount, submission timeline, or performance location beyond Tyndall AFB is specified.