# York County #YC-2026-4681393

York County courthouse geothermal heat pump replacement

**Posted:** October 01, 2026
**Respond By:** November 03, 2026
**Identifier:** YC-2026-4681393
**NAICS:** 238220, 238290, 423730

York County Municipal Government is seeking an upgrade to the courthouse geothermal HVAC system, replacing two existing condenser units.
- **Government buyer:** York County Municipal Government, Maine — Office of the County Commissioners.
- **OEM:** **Trane** is the basis-of-design manufacturer and the maker of the existing EXWA24032C units; equivalent replacement equipment is permitted if it meets requirements and works with the existing Trane controls.
- **Products:** Two high-efficiency water-to-water geothermal heat pump condenser units, nominally 20 tons each, using R-454B refrigerant. The specified existing/reference model is Trane EXWA24032C; the replacement units may be that model or an equivalent.
- **Services:** Remove and dispose of the existing units and associated components; furnish and install replacements; complete piping, electrical, controls, condensate, and refrigerant work; start up, commission, and performance-test the system; provide on-site staff training and a written commissioning report.
- **Notable requirements:** Deliver a complete, operational system compatible with existing building infrastructure and Trane controls. The contractor provides all labor, materials, equipment, supervision, transportation, tools, permits, and incidental work. Minimum warranties are five years on compressors and one year on labor and workmanship. Davis-Bacon compliance and certified payroll are required; the project has EECBG funding.
- **Existing system information:** The geothermal system has two 400-foot wells. Documented testing indicates approximately 194–210 GPM pumping and water temperatures of about 50–51°F.

### Description

York County Government is seeking proposals to replace and upgrade two of the four existing geothermal heat pump units at the County facility identified in the RFP; the existing units are Trane Model EXWA24032C. The work includes removing the existing condenser units and furnishing and installing new high-efficiency water-to-water geothermal heat pump equipment, with associated piping, electrical connections, controls integration, condensate connections, startup, commissioning, performance testing, and staff training. The contractor must provide the labor, materials, equipment, supervision, transportation, tools, permits, and incidental work needed for a complete operational system, in accordance with the RFP, manufacturer requirements, applicable codes, and industry standards. The system must provide reliable heating and cooling, improved energy efficiency, and compatibility with the existing HVAC infrastructure, and comply with State of Maine energy codes and EPA regulations. Proposals are due November 3, 2026, at 3:30 p.m. EST.

[View original listing](https://www.yorkcountymaine.gov/rfp)