Spencer RC RTU Replacement

The Iowa Department of Public Safety is seeking qualified contractors to replace seven existing roof‑top air‑conditioning units (RTUs) at the Spencer Readiness Center. Work includes removal of the existing units, installation of new Lennox Enlight RTUs with specified factory‑installed options, thermostat upgrades, gas line modifications, electrical wiring updates, and roof‑penetration sealing compatible with Duro‑Last roofing systems. Bids must be submitted as a single lump‑sum amount through the IMPACS system; no public opening will occur. A mandatory site visit is scheduled for June 30 to clarify scope details. • Replace 7 existing RTUs with new Lennox Enlight units (including high‑performance economizer, ECM fan, BACnet, R‑454B refrigerant, etc.). • Upgrade thermostats to Honeywell VisionPRO 8000 Smart Thermostats and address any low‑ or line‑voltage wiring needs. • Perform related gas‑line, roof‑curb, high‑wind bracket, and roof‑seal work compatible with existing Duro‑Last roofing. • Submit one lump‑sum bid by July 8 2026; certify compliance with RFB definitions, federal terms, and insurance requirements.