The U.S. Coast Guard is seeking information for the repair or replacement of HVAC units at their Station Belle Isle location in Michigan. The station currently uses 5 Lennox brand Rooftop HVAC Units, with four of them being approximately 16 years old and utilizing a discontinued refrigerant. Two of these units are responsible for heating and cooling the berthing rooms where Coast Guard members stay overnight. The project may involve replacing these old units with new ones or repairing them to ensure they continue to function properly. • The project location is USCG Station Belle Isle, 50 Strand Drive, Detroit, MI 48207. • The HVAC units in question are 7.5 Ton R-22 Lennox brand Rooftop HVAC Units. • The old units are approximately 16 years old and use a discontinued refrigerant. • Two units are responsible for heating and cooling the berthing rooms. • The project may involve replacing the old units with new ones or repairing them.