R-32 Pressure at 130°F — Saturation P-T Data
How This Was Calculated
Saturation pressure interpolated from ASHRAE tabular data for R32. Very high pressure — elevated condensing conditions.
- P_sat
- Saturation pressure: 474 PSI
- T_input
- Input temperature: 130°F
- T_data
- ASHRAE tabular reference data: R32
Important Considerations
At 130°F, R32 reaches 474 PSI — well above the 450 PSI threshold. This is an extreme condensing condition. Verify system high-pressure cutout is properly set and functional. Check for blocked condenser airflow, dirty coil, or refrigerant overcharge. Operating at sustained high pressure significantly reduces compressor life and increases risk of safety relief valve opening.
130°F is an extreme operating temperature — above the rated ambient limit for most residential HVAC equipment (typically 115–120°F). At this condition, R32 reaches very high saturation pressure which stresses compressor windings and discharge valves. Most manufacturers void warranty for operation above rated ambient. Consider condenser shading, pre-cooling, or equipment with expanded ambient ratings for installations in direct sun in hot climates.
The saturation pressure shown (for R32 at 130°F) is the baseline for measuring superheat and subcooling. Suction superheat = suction line temperature minus evaporator saturation temperature. Subcooling = condensing saturation temperature minus liquid line temperature. Typical targets: 8–12°F superheat at the evaporator (TXV systems), 10–20°F subcooling at the condenser. Deviations indicate improper charge, metering device issues, or non-condensables.
R-32 is classified A2L (mildly flammable). It has a low burning velocity and requires specific handling procedures. Equipment designed for R-32 includes built-in safety features (leak detection, spark-proof electronics). Do not charge R-32 into systems designed for R-410A or R-22.
R32 has a GWP of 675 — meaning 1 lb released equals 675 lbs of CO2 equivalent warming over 100 years. It falls under AIM Act HFC phase-down regulations but is considered a transitional refrigerant with lower impact than legacy options like R-22 or R-404A. Lower-GWP alternatives (R-32 at GWP 675, R-454B at GWP 466) are increasingly available for new equipment.
Saturation pressure-temperature data for R32 derived from ASHRAE Fundamentals Handbook, Chapter 30 (Thermophysical Properties of Refrigerants), and verified against manufacturer published data (Chemours Opteon, Honeywell Solstice). Values represent saturated conditions at sea level.