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HVAC superheat and subcooling worksheet
Calculate both temperature differences from four measured line and saturation temperatures.
01Enter your values
Runs in your browser02HVAC superheat and subcooling worksheet
Runs in your browser
How it works
Calculate both temperature differences from four measured line and saturation temperatures.
superheat = suction-line temperature − suction saturation temperature; subcooling = liquid saturation temperature − liquid-line temperature
Runs in your browser
Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Calculate both temperature differences from four measured line and saturation temperatures.
Superheat is suction-line minus suction saturation; subcooling is liquid saturation minus liquid-line temperature. No refrigerant lookup or charge diagnosis is made.
How to use it
- Enter your values
°C / °F · Tsl · Tssat · Tlsat · Tll
- Calculate / generate
Calculate both temperature differences from four measured line and saturation temperatures.
- Result
SH: 7 K; SC: 7 K
Calculation method
superheat = suction-line temperature − suction saturation temperature; subcooling = liquid saturation temperature − liquid-line temperature
HVAC superheat and subcooling worksheet
- °C / °F
- C
- Tsl
- 12 °
- Tssat
- 5 °
- Tlsat
- 42 °
- Tll
- 35 °
Result
SH: 7 K; SC: 7 K
Frequently asked questions
Does this determine the correct refrigerant charge?
No. It only computes measured differences; compare them with the equipment manufacturer’s procedure.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.