How do the operating pressures of R-410A compare to those of R-22?

R-410A operates at much higher pressures compared to R-22, which is critical to understand when working with these refrigerants. The higher operating pressures of R-410A, which can be about 50% to 70% greater than those of R-22, are a result of its thermodynamic properties and the fact that R-410A is a zeotropic blend of two refrigerants. This characteristic allows R-410A to be more efficient under higher pressures, but it also necessitates the use of specifically designed equipment that can handle these elevated pressures safely.

When comparing systems, using R-410A in place of R-22 or in systems not designed for R-410A could lead to potential failures due to the mismatch in pressure ratings. It is essential for technicians to recognize these differences to ensure safe and effective operation of HVAC systems. Understanding these operating pressures is fundamental for compliance with safety standards and ensuring the longevity of the equipment.