This opportunity is a 100% small business set-aside for the cyclic replacement of four HVAC systems at the Big South Fork National River and Recreation Area, with work locations in Tennessee and Kentucky. The contract type is Firm Fixed Price, with a performance period of 45 days after the Notice to Proceed. Offerors are encouraged to perform a site visit at any time to fully understand the requirements. Vendor questions are due by July 10, 2026, and proposals are due by July 17, 2026. No specific budget amount is mentioned in the description.