The U.S. Department of State, through the U.S. Embassy in Harare, Zimbabwe, is seeking to procure an upgrade for the existing chiller control systems from PCO3 to PCO5 on a single-source basis. This upgrade is essential due to the obsolescence of the current PCO3 controllers, which are no longer manufactured or supported, and aims to enhance HVAC efficiency and performance at the embassy. The selected contractor, Multistack, USA, is uniquely qualified for this project as the original manufacturer, ensuring the provision of genuine spare parts, warranty, and dedicated support, with an estimated total cost of $140,000. Interested parties must reach out to HarareGSOProcurement@state.gov by May 9, 2025, for further details.