REPLACE HVAC ITEMS AT USCG ANT LIS, NEW HAVEN, CT

The U.S. Coast Guard Base Boston, under the Department of Homeland Security, is soliciting a firm fixed price quote for the turnkey replacement of three outdoor condensing units, three indoor air handling units, and five thermostats at ANT Long Island Sound in New Haven, Connecticut, under solicitation number HVACANTLIS2. This procurement is a total small business set-aside under NAICS code 238220 with a size standard of $19 million, and responses must be submitted via a completed SF 18 form including price and UEI, along with a detailed price breakdown, to Beverly A. Primm at beverly.a.primm@uscg.mil by the deadline of June 4, 2026. The contractor is responsible for providing all labor, materials, equipment, refrigerants, electrical components, controls, supervision, transportation, tools, permits, and incidental costs necessary for full system replacement, including integration with the existing boiler system to preserve heating function, and must comply with all applicable standards such as EPA Section 608 certification for refrigerant handling, prohibition of R-22 equipment, nitrogen purging of brazed joints, and adherence to manufacturer requirements for pressure testing, leak checking, and evacuation. All new systems, particularly those using R-454B refrigerant, must include required A2L safety labeling, and units must be installed level, secure, accessible, and properly labeled. The period of performance is 30 calendar days from Notice to Proceed, with a required delivery date of July 11, 2026, and standard work hours are Monday through Friday, 0800–1500, unless otherwise approved by the Contracting Officer’s Representative. Performance must be coordinated with the COR for access, safety, and operational continuity, and full commissioning of each system is mandatory prior to government acceptance, which requires successful verification of cooling performance, preserved heating operation, leak-free hydronic and condensate systems, proper thermostat operation, and submission of comprehensive closeout documentation including startup and commissioning reports, EPA refrigerant recovery records, warranty documentation, owner manuals, and maintenance guidelines. The contractor warrants all workmanship for a minimum of one year and must comply with federal regulations including prohibitions on contingent fees, trafficking in persons, covered telecommunications equipment, and use of excluded parties as listed in SAM. A site visit is strongly encouraged to assess existing conditions, equipment size, duct and piping layouts,