Online HVAC and Refrigeration Training

Additional Charge Weight Calculator

Enter the length in Feet ADDITIONAL from the standard charge the system comes in. Many systems come charged for a 15' lineset but this is not universal. Make sure you follow the manufacturer's guides before using this calculator.

Air Density

Accurately calculate air density based on local altitude and humidity

Nitrogen Pressure Calculator

Recovery Tank Fill

Calculate total tank and refrigerant weights

Superheat & Delta T

Calculate target superheat for fixed metering device (piston) systems and air split on 400 CFM per ton A/C

Superheat & Delta T Result: Target Temp Split:

Under Load Capacitor Test

Test capacitors while the system is running

Voltage Imbalance Calculator

Calculate three-phase voltage imbalance