WWTP HVAC Replacement & Grit Chamber Ductwork Insulation Repairs

The City of Keene is seeking proposals for the replacement of the HVAC unit at the Wastewater Treatment Plant (WWTP) and repairs to the grit chamber ductwork insulation. The project includes the design and construction of a new HVAC system, including the replacement of the existing air handler unit, duct-mounted hydronic heating coils, and controls. The selected firm will be responsible for providing a firm fixed price for all construction work, attending progress meetings, and conducting commissioning of the new system. Key considerations for the proposal include the qualifications and experience of the design-build team, technical approach, schedule, and initial cost proposal. • The project requires the replacement of the existing air handler unit with a new one. • The existing duct-mounted hydronic heating coils will be replaced with new electric in-line duct heaters. • The controls system will be upgraded and integrated into the plantwide SCADA system. • The grit chamber ductwork insulation will be repaired or replaced. • The selected firm will provide a firm fixed price for all construction work. • The project requires commissioning of the new HVAC system, including functional performance testing and training of City staff.