Formal Bid for Building 23 AC Units Replacement

Replace six existing AC units in Building 23. Existing AC units were installed in 1999, 24 years old now, already beyond their service life. New AC units shall be heat pump (no gas) units and shall match the capacities of the existing. Existing supply and return ducts shall remain Question Deadline 07/07/2023 at 2:00 PM PT Recommendation for Award Date: September 13, 2023 Construction Cost Estimate: $250,000 and Allowance: $50,000 Project Name & Summary a. Building 23 AC Units Replacement b. Replace six existing AC units in Building 23. Existing AC units were installed in 1999, 24 years old now, already beyond their service life. New AC units shall be heat pump (no gas) units and shall match the capacities of the existing. Existing supply and return ducts shall remain. o Remove and dispose of six existing AC (gas/electric) units. o Provide new heat pump package AC units with economizer. o Provide base rail for the new AC units. o Rework and modify sections of existing supply and return ducts, and bypass ducts, as required to accommodate installation of new AC units. o Remove and cap off sections of existing gas piping. o Rework and modify existing power wiring from existing disconnect switches to new AC unit power terminals. o Route new condensate drain piping. o Modify existing ALC controllers to accommodate new heat pump AC units with economizer including new graphics and programming. o Perform air balancing to AC units only. o Remove and reinstall existing duct smoke detectors. o Provide temporary portable AC units and accessories.

Division 23 -

Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Central HVAC Equipment.