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Pressure Temperature Chart

Home / PT Chart
HVAC/R Field Tools

Premium PT Chart Calculator

Convert saturated refrigerant temperature into gauge pressure using your PT engine. Select the refrigerant, choose dew or bubble point for blends, and read pressure instantly in psiG, barG, or inHg vacuum.

Live PT Engine
01

Select Refrigerant

R452A
Zeotropic Glide Phase Use vapour/dew for superheat and liquid/bubble for subcooling.
02

Temperature Input

Selected saturation temperature -12.2°C 10°F
-50°C -20°C 0°C 25°C 50°C 70°C
Saturated gauge pressure
0.0psiG
Metric equivalent 0.00 barG
Refrigerant R452A
Phase Dew
Dew point

Use vapour/dew values when checking evaporating temperature and superheat.

Bubble point

Use liquid/bubble values when checking condensing temperature and subcooling on blends.

Gauge pressure

Outputs are gauge readings, not absolute pressure, matching typical service gauges.

Field note: PT readings are only one part of diagnosis. Always compare with manufacturer data, calibrated gauges, stable system operation, correct refrigerant, and appropriate dew/bubble phase for zeotropic blends.
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