Challenge The HVAC systems at Warrick County Jail had reached the end of their useful life, and operational costs were increasing as the aging, inefficient equipment required more frequent service calls. The system’s pneumatic controls were not working effectively, causing comfort issues, and outside air ventilation was also inadequate, with the underground supply ductwork sometimes filling up with ground water, inhibiting proper air flow distribution. In addition, water flow issues existed with hot water piped to cold water applications. The Warrick County Jail sought to improve the work environment for employees and living conditions for inmates, mitigate indoor air quality issues, and increase energy efficiency to reduce cost and environmental impact. Solution Based on a long-term succe

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