RefrigCharge
iOS Universel / Utilitaires
RefrigCharge is a fast, offline HVAC refrigerant charge calculator for technicians and engineers. Diagnose subcooling, superheat, and charge levels for common refrigerants including R-410A, R-22, and R-134a.
WHAT IT CALCULATES:
Subcooling Check:
- Select your refrigerant type from a built-in list
- Enter liquid line pressure and temperature readings
- Instantly see measured subcooling vs target range
- Get a clear NORMAL, HIGH, or LOW status indicator
Superheat Diagnosis:
- Enter suction pressure and suction line temperature
- Calculate measured superheat against target values
- See possible causes when readings are out of range
- Troubleshoot low charge, restricted metering devices, or airflow problems
Charge Calculator:
- Estimate total refrigerant charge by system capacity
- Account for additional lineset length beyond factory charge
- Choose liquid line diameter for accurate line adder calculation
- Get total charge weight in pounds
REFRIGERANTS SUPPORTED:
- R-410A (residential and commercial AC)
- R-22 (legacy systems, service only)
- R-134a (automotive and light commercial)
KEY FEATURES:
- Saturation temperature lookup by pressure for each refrigerant
- Subcooling and superheat calculation with target range comparison
- Charge estimation based on system tonnage and lineset length
- Status badges showing NORMAL, HIGH, or LOW readings
- Diagnostic tips for out-of-range conditions
- Works completely offline
- No account or login required
BUILT FOR THE JOB SITE:
Whether you are a licensed HVAC technician, refrigeration mechanic, or service engineer, RefrigCharge gives you quick subcooling and superheat calculations on the spot. Enter your gauge readings and get an instant diagnosis with actionable advice.
Supports R-410A, R-22, and R-134a pressure-temperature relationships for accurate field diagnostics.
