HVAC technicians and DIYers struggle to source replacement coupling fittings for used heat pump systems

When purchasing used or refurbished heat pump equipment, critical coupling fittings are frequently missing or damaged, forcing technicians and homeowners to either source expensive OEM replacements or improvise with incompatible parts. Current solutions fail because coupling fittings are proprietary, hard-to-identify, and require exact specifications to ensure system safety and efficiency—making workarounds risky and time-consuming.