HVAC Charge: Superheat & PT
Superheat, subcooling and PT charts for R-454B, R-32, R-410A and more. Offline, no account.
Built for service techs on the roof, not in the office. Enter gauge pressure and line temperature; saturation, superheat and subcooling update as you type, from published manufacturer PT charts.
Free
- Superheat and subcooling with R-410A, R-454B, R-32 and R-22
- Pressure ↔ temperature lookup with bubble and dew points
- Works offline, no login, no ads
Pro
- All 22 refrigerants: R-404A, R-134a, R-407C, R-448A, R-1234yf, R-290, CO2 and more
- Target superheat for fixed-orifice (piston) systems from the manufacturer charging table
- Clear add / recover call against the target
- Saved readings with notes to share with the office or customer
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