# Penobscot County Revize #36

Penobscot County Complex HVAC, Mechanical, Boiler, Backflow, and BAS/DDC Services

**Posted:** October 26, 2026
**Respond By:** November 20, 2026
**Identifier:** 36
**NAICS:** 238220

Penobscot County is seeking a qualified contractor to maintain HVAC, mechanical, boiler, backflow, and building-control systems across its Bangor complex.
- **Government buyer:** State of Maine, Penobscot County Commissioners & Administration, Penobscot County Commissioners' Office.
- **Locations:** Historic Courthouse, The Annex, Sheriff’s Office and Correctional Facility, and Old District Court/EMA building.
- **OEMs and named vendors:** No equipment manufacturers, OEMs, or service vendors are identified in the solicitation.
- **Services requested:**
  - 24/7/365 emergency HVAC, mechanical, boiler, and BAS/DDC response, with qualified on-site arrival within two hours; routine work must be initiated within 48 hours.
  - Preventative maintenance and seasonal startup/layup for chillers, cooling towers, boilers, pumps, expansion tanks, RTUs, AHUs, and hydronic systems; quarterly RTU/AHU maintenance is specified.
  - Central boiler and jail domestic-hot-water boiler service, including burner tuning, annual combustion-efficiency testing, and written reports.
  - Annual testing, repair or rebuilding as needed, and State of Maine certification of backflow assemblies across the facilities.
  - BAS/DDC sensor, actuator, valve, interface, and controller calibration and troubleshooting, plus seasonal control optimization.
  - Precision CRAC/CRAH cooling maintenance for 911 dispatch, server rooms, and EMA infrastructure.
  - Jail cell-block exhaust and security-ventilation inspection, airflow checks, and maintenance.
- **Notable requirements:** Applicable Maine trade licenses and backflow tester certification; EPA Section 608 Universal certification for refrigeration work; relevant BAS/DDC training; at least five years of qualifying commercial or institutional experience; and compliance with county background-check, CJIS, identification, and security requirements. The contractor supplies labor, supervision, tools, diagnostic and testing equipment, transportation, and materials.
- **Pricing requested:** Labor rates, material markup, annual or seasonal maintenance fees, and a per-assembly backflow testing fee. No fixed equipment quantities or part numbers are provided.
- **Term:** One-year initial term with up to three additional one-year renewals, for a maximum potential four-year term, subject to performance, agreement on rate adjustments, and annual budget authorization.

### Description

Penobscot County is soliciting sealed proposals from qualified, licensed contractors for comprehensive HVAC/R, mechanical, boiler plant, backflow testing, and BAS/DDC services at four buildings in the Penobscot County Complex in Bangor, Maine. Work includes scheduled preventative maintenance, seasonal startup and layup, on-call repairs, annual backflow testing and Maine certification, and precision cooling maintenance. The contractor must provide 24/7/365 emergency response with arrival within two hours and routine on-site response within 48 hours. The initial term runs January 1 through December 31, 2027, with up to three additional one-year renewals; proposals are due November 20, 2026, by 2:00 PM EST.

[View original listing](https://www.penobscot-county.net/bids/HVAC-Services-Contract-36.php)