This reference table provides essential thermodynamic properties of common refrigerants at saturation conditions, critical for HVAC and refrigeration system design. The data covers R134a (automotive/commercial systems), R410A (modern HVAC replacement for R22), ammonia (industrial applications), and R22 (historical reference), highlighting key parameters like saturation pressure, density, enthalpy, and latent heat across a practical temperature range (-20°C to 40°C). Engineers can use these values to calculate cooling capacity, size compressors, optimize heat exchangers, and evaluate refrigerant performance. Note the significant differences in latent heat (e.g., ammonia’s 1119.6 kJ/kg vs. R134a’s 213.4 kJ/kg at -20°C), which directly impact system efficiency and refrigerant selection. All data adheres to ASHRAE and NIST standards for reliability.