Industrial Heat Pumps & Electrified Thermal Systems worked example

Refrigerant Charge Cost at 110% charged circuit scope: a worked example

This scenario runs the refrigerant charge cost calculation on the strong side: 110% charged circuit scope, with every other input held at its documented default. Use it when an estimator, production planner, or commissioning lead needs to budget refrigerant for packaged heat pump skids, factory test loops, or field startups.

The inputs for this scenario

  • Refrigerant charge mass: 85 kg (unchanged)
  • Refrigerant cost per kg: 42 $ / kg (unchanged)
  • Charged circuit scope: 110 % (raised for this scenario; the documented default is 100)
  • Fixed evacuation and charging setup cost: 650 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable refrigerant charge cost = refrigerant charge mass × refrigerant cost per kg × charged circuit scope) to the inputs above produces each figure below.
  • At this operating point the engine returns 4,577 $ for total refrigerant charge cost, the number this scenario is built around.
  • At this operating point the engine returns 53.85 $ / kg for refrigerant cost per kg.
  • At this operating point the engine returns 3,927 $ for variable refrigerant charge cost.
  • At this operating point the engine returns 650 $ for fixed evacuation and charging setup cost.

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 8.46% above the baseline at 4,577 $.
  • Use it when costing a heat pump or chiller charge per unit, comparing refrigerants, or quoting a charging job. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total refrigerant charge cost: 4,577 $ (headline result)
  • Refrigerant cost per kg: 53.85 $ / kg
  • Variable refrigerant charge cost: 3,927 $
  • Fixed evacuation and charging setup cost: 650 $

Run it with your numbers

  • Every input above is editable in the live Refrigerant Charge Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.