Refrigerant Charge Estimator

Tool · 04 of 07 · NIST REFPROP densities

Step 1

Refrigerant & climate

Refrigerant

12 refrigerants. R-449A is Izhar's medium-temp default; R-454C low-temp.

Climate

Sets the saturated condensing temperature for liquid-line density.

Step 2

Liquid line OD

Liquid line length

Step 3

Suction line OD

Suction line length

Step 4

Condensing unit

Class-typical or manual datasheet entry. Adds factory pre-charge + receiver fill.

Evaporator

Adds the evaporator pumpdown charge. Optional for liquid-line-only checks.

Evaporator quantity

units

Multiply evaporator pumpdown by this many units.