IPBS HVAC - Motivair Units Replacement

The Iowa Department of Administrative Services is requesting bids for replacement of two Motivair chiller units at the Iowa PBS facility (IPBS), 6450 Corporate Drive, Johnston, Iowa 50131, under RFB 952500-01, with bids due July 30, 2026 at 2:00 PM via the IMPACS Electronic Procurement System.

The scope includes demolition and disposal of existing chillers, installation of two new 80-ton Trane CGAM air-cooled chillers with associated chilled water pumps rated at 170 GPM, installation of a new dry cooler with 123,000 CFM airflow capacity, structural modifications to support roof-mounted units, electrical distribution upgrades including new 40-ampere three-phase breakers, piping and controls, and re-insulation of existing piping designated to remain. The new control system will utilize Johnson Controls BACnet protocol for monitoring and management. Chiller system warranty must provide a minimum of five years, parts-only, non-prorated coverage from substantial completion, covering compressors, evaporators, condenser coils, piping, and specialties. All roof work must maintain existing roof warranty through Koopman Roofing. The project is designed to maintain system redundancy by replacing equipment sequentially to ensure continuous facility operation.

Work is estimated to commence by December 2026 and reach substantial completion by February 15, 2027, with work hour restrictions of 8:00 AM to 5:00 PM Monday through Friday. The contract will operate under ConsensusDOCS 802 Form of Agreement with 3% retainage during construction. Each bid must be accompanied by bid security equal to 5% of the total bid amount in the form of a bid bond, certified check, or cashier's check. Subcontractors and suppliers must be identified within 48 hours of the bid due date and cannot be changed without owner approval. The State of Iowa is exempt from state and local sales and use taxes; bidders must not include such taxes. An optional pre-bid meeting is scheduled for July 21, 2026 at 2:00 PM at the project site. Written questions are due by 5:00 PM on July 22, 2026. The Notice of Intent to Award is anticipated for August 5, 2026.