North Bend Library HVAC Replacement

The King County Library System is soliciting lump sum bids for the replacement of HVAC system equipment and accessories at the North Bend Library located at 115 E 4th Street, North Bend, WA. The scope of work includes the mechanical design, engineering, permitting, and in-kind replacement of the heating coil in AHU-1, seven fan-powered VAVs with their heating coils, a heating circulating pump, and a heating expansion tank. A mandatory pre-bid conference was scheduled for September 22, 2026, and the final deadline for electronic bid submission via the OpenGov portal is October 9, 2026. Award decisions will be based on price, references, and full compliance with the invitation to bid, with the library verifying the responsibility of the low bidder per RCW 39.04.350. Bidders must provide a bid bond, certified check, or cashier's check for at least five percent of the base bid. The successful contractor will be required to provide payment and performance bonds and commercial general liability insurance within fifteen calendar days of contract receipt. All work must adhere to prevailing wage rates as defined by chapter 39.12 RCW, and payment is contingent upon the submission of an approved Statement of Intent to Pay Prevailing Wages. Technical requirements include strict adherence to labeling and marking standards for equipment, valves, and piping, as well as the submission of a finalized Project Record to the architect or engineer prior to final acceptance. Invoices are to be submitted electronically with a payment term of no more than thirty days.