This study explores a novel adhesive-based joining technology for heat exchangers in HVAC&R systems to enhance durability and reduce refrigerant leaks. An advanced epoxy adhesive was evaluated for chemical compatibility and mechanical stability using two methods: (1) an ASHRAE Standard 97 sealed glass tube test and (2) thermal cycling and field assessments of a residential-scale HVAC&R system. The adhesive joints exhibited strong vibration and thermal fatigue resistance with no degradation or failure after 150,000 thermal cycles (equivalent to 5 years of operation). Results indicate that adhesive bonding is a viable alternative to conventional joining methods, offering improved reliability and reduced leakage risks in HVAC&R applications.
