What distinguishes a flare for an R-410a system from that for an R-22 system?

The distinguishing factor for a flare in an R-410A system compared to an R-22 system is the larger cone size for R-410A. This is essential because the R-410A refrigerant operates at higher pressures than R-22. Consequently, the flare fittings must accommodate these pressures and maintain a leak-free connection, which necessitates a larger cone size. This design feature helps ensure that the joints can withstand the operational demands of the refrigerant system, providing reliability and safety.

While other factors such as the refrigerant type and appearance may vary between systems, they do not directly influence the functionality and performance requirements of the flare connections specifically for R-410A versus R-22.