The National Park Service requires a contractor to replace 18 aging HVAC systems across 11 buildings at Mammoth Cave National Park in Kentucky with modern, energy-efficient units. The project is set aside for small businesses and has an estimated budget between $200,000 and $500,000. Performance will take place at 61 Maintenance Road, Mammoth Cave, KY, with a period from August 3, 2026, to August 2, 2027. This is a pre-solicitation notice, not a request for proposals; interested firms should submit their capabilities by 9:00 AM Eastern on May 27, 2026. The government will use responses to determine if a competitive set-aside is feasible.