Z--HVAC Upgrades, Mammoth Cave National Park

The National Park Service is replacing 18 HVAC systems across 11 buildings at Mammoth Cave National Park in Kentucky. This firm-fixed-price construction project, solicitation 140P5126R0010, covers facilities such as the Ranger Station, Training Center, and various administrative offices. The procurement is a small business set-aside with an estimated value between $250,000 and $500,000. Amendment 0001 updated the solicitation to set a 180-day performance period following the Notice to Proceed and removed the option year requirement. Proposals are due July 6, 2026. Mandatory site visits were held in early June 2026 to allow for inspection of the 11 buildings. Submissions must include a completed SF-24 Bid Bond, a Past Performance Questionnaire, and a price proposal using the revised Excel-based schedule. Technical requirements include adherence to SEER2 ratings and the use of R-454B refrigerant. Work includes removing existing units and installing new systems that meet SEER2 and R-454B refrigerant standards. Amendment 0001 established a 180-day performance period and removed the option year requirement. The National Park Service is replacing 18 HVAC systems across 11 buildings at Mammoth Cave National Park under project PMIS# 352411. This firm-fixed-price contract includes all labor, materials, and supervision for a complete mechanical update.