Boiler Replacement at Barnum Museum - 820 Main Street

The City of Bridgeport is requesting bids for complete boiler replacement at the Barnum Museum, 820 Main Street, under ITB, with proposals due September 11, 2026 at 2:00 pm through the OpenGov e-Procurement Portal and questions due August 27, 2026 at 5:00 pm. Connecticut prevailing wage requirements apply; bids of $100,000 or more require a 10% bid bond and 100% performance and payment bonds.

The scope encompasses removal of existing hot water boiler equipment, installation of new condensing gas boilers meeting ASME "H" stamp certification with minimum 97% combustion and thermal efficiency, hydronic system components (pumps with integrated variable frequency drives and BACnet/Modbus communication, expansion tanks, air separators, valves), natural gas and combustion air piping, hot water piping and insulation, electrical integration with building automation, hydrostatic testing at 125 PSI minimum, testing and balancing by AABC or NEBB-licensed contractors within ±10% of design specifications, system startup with manufacturer support, and four hours of owner training. Approved boiler manufacturers are Lochinvar, Peter and Kelly, Burnham, or Patterson-Kelly. Circulation pumps must be ECOcirc XL or equivalents from B&G, Taco, or Grundfos. All work must comply with state and local codes, NFPA standards, and ASHRAE 90.1 energy efficiency requirements. Contractors must be licensed in Connecticut; out-of-state bidders need a Certificate of Authority to Do Business in Connecticut within five days of Notice of Intent to Award. Substantial completion is required within two months of Notice to Proceed. Work is restricted to 7:00 am–5:00 pm, Monday through Friday, with the museum partially occupied; contractors must provide 72 hours' notice for activities affecting occupancy and maintain existing exits. A $10,000 allowance covers unforeseen conditions. A Construction Waste Management Plan targeting 75% recycling by weight is required with monthly documentation. Field welding and torch-cutting are prohibited.

Insurance requirements include Workers' Compensation with $100,000 per-accident and $500,000 disease limits; Commercial General Liability of $1,000,000 per occurrence and $2,000,000 aggregate; Automobile Liability of $1,000,000; Umbrella/Excess Liability of $5,000,000; and Builders Risk at 100% of contract value. All policies must be issued by Connecticut-licensed carriers with AM Best ratings of A-VII or better, naming the City as additional insured with 30 days' notice of cancellation. All equipment carries a one-year warranty; the boiler heat exchanger carries a ten-year limited warranty. Unit prices remain firm for 120 days from bid opening. Prevailing wage rates, effective July 14, 2026, include boilermakers at $50.21 base/$30.01 fringe, pipefitters at $52.08 base/$36.80 fringe, electricians at $50.00 base/$36.97 fringe plus 3% of gross, and other trade classifications with annual adjustments July 1st thereafter. Certified payrolls documenting all hours and wages are required regardless of worker classification or contractual status.