Industrial Heat Pumps & Electrified Thermal Systems worked example

Refrigerant Charge Cost at 72% charged circuit scope: a worked example

This worked example runs the refrigerant charge cost numbers for a tougher week than the baseline: 72% charged circuit scope instead of the typical 100%. Estimate refrigerant charging cost for an industrial heat pump system from charge mass, refrigerant unit cost, scope share, and fixed evacuation or setup cost.

The inputs for this scenario

  • Refrigerant charge mass: 85 kg (held at the documented default)
  • Refrigerant cost per kg: 42 $ / kg (held at the documented default)
  • Charged circuit scope: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed evacuation and charging setup cost: 650 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable refrigerant charge cost = refrigerant charge mass × refrigerant cost per kg × charged circuit scope.
  • Total refrigerant charge cost works out to 3,220 $ at these inputs, and this is the headline figure for the scenario.
  • Refrigerant cost per kg works out to 37.89 $ / kg at these inputs.
  • Variable refrigerant charge cost works out to 2,570 $ at these inputs.
  • Fixed evacuation and charging setup cost works out to 650 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where charged circuit scope sits at 100% and the headline result is 4,220 $, this scenario comes in 23.69% below the baseline at 3,220 $.
  • Use it when costing a heat pump or chiller charge per unit, comparing refrigerants, or quoting a charging job. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total refrigerant charge cost: 3,220 $ (headline result)
  • Refrigerant cost per kg: 37.89 $ / kg
  • Variable refrigerant charge cost: 2,570 $
  • Fixed evacuation and charging setup cost: 650 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Refrigerant Charge Cost calculator, set charged circuit scope to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.