# Illinois BidBuy #27-350SOS-PHYSE-B-54755

Archives Building HVAC upgrades and equipment replacement

**Posted:** November 04, 2026
**Respond By:** December 02, 2026
**Identifier:** 27-350SOS-PHYSE-B-54755
**NAICS:** 238220, 238210, 238290

The Illinois Secretary of State is seeking a contractor to upgrade HVAC systems at its Archives Building in Springfield.
- **Buyer:** Illinois Secretary of State, Physical Services Department; Archives Building, Capitol Complex, Sangamon County, Illinois.
- **Scope:** Replace and connect HVAC, steam, chilled-water, controls, and electrical equipment; remove the existing York chiller and Des Champs condenser and related systems.
- **Specified OEMs and equipment:**
  - **Climate by Design:** one CDI-154-8.0-SF7SLOR dehumidification air-handling unit (DHU-2).
  - **Daikin:** one AGZ006F 69-ton packaged chiller (CH-1).
  - **Bell & Gossett:** one GPX AP86 heat exchanger, part number BY5433 (HX-1).
  - **Greenheck and Belimo:** three VCD-42 control dampers with AFBUP-S actuators.
  - **Spirax Sarco:** one APT10-4.5 automatic pump trap.
  - **DriSteem:** one UltraSorb MP dispersion panel and one STS-400C steam-to-steam humidifier.
  - **Square D:** one 400A MLO I-Line panelboard, model HC3248DB9/HCM48TS; also one DHU control panel is specified.
- **Other named manufacturers or brands:** Schneider EcoStruxure controls; York and Des Champs equipment to be removed; Armaflex insulation or equal; and control-component alternatives from Allen-Bradley, IDEC, and Omron.
- **Notable requirements:** Integrate the new equipment with Schneider EcoStruxure; legally evacuate and dispose of refrigerant; complete startup, testing, and balancing; obtain required permits and inspections; and provide a one-year labor-and-materials guarantee.

### Description

The Illinois Secretary of State is seeking bids for HVAC upgrades to its Archives Building at 100 E Jackson Street, Capitol Complex, Springfield, Illinois. The work includes replacement and installation of HVAC equipment and related mechanical and electrical upgrades, as detailed in the attached IFB and drawings. A mandatory pre-bid meeting is scheduled for November 12, 2026, at 501 S 2nd Street, Room 037, Springfield. Bids are due December 2, 2026, at 2:00 PM.

[View original listing](https://www.bidbuy.illinois.gov/bso/external/bidDetail.sda?docId=27-350SOS-PHYSE-B-54755&external=true&parentUrl=close)