South Campus Building 4 HVAC Replacement, PW 23-10 RE-BID

The County of Napa is seeking bids for the replacement of three existing Custom Air Handling Units, the existing hydronic heating water boiler system, and part of the existing HVAC system controls, among several other HVAC-related improvements at 2751 Napa Valley Corporate Drive, Napa, CA 94558. The project involves custom-built AHUs, replacement of the existing VAV box controllers and electronic control valves, connection of the existing mechanical bay exhaust fans, and installation of one single-split air conditioning unit. The engineer's estimate for the project is $3,655,000. • Replacement of three existing Custom Air Handling Units with custom-built AHUs • Replacement of the existing hydronic heating water boiler system with three new condensing boilers • Replacement of the existing VAV box controllers and electronic control valves • Connection of the existing mechanical bay exhaust fans • Installation of one single-split air conditioning unit • Interface with the existing main building fire alarm system