This is a Sources Sought notice for market research to determine the availability of Indian Economic Enterprises for providing comprehensive preventative maintenance for HVAC systems. The work would be performed at the Standing Rock IHS Hospital in Fort Yates, North Dakota, and the Youth Regional Treatment Center in Mobridge, South Dakota. The anticipated period of performance is a base period from May 1, 2026, to July 31, 2026, with four one-year option periods. The contract will be firm-fixed-price and requires a detailed capability statement from interested parties.