Heat Exchanger, Coil & Radiator Manufacturing worked example

Refrigerant Charge Estimate with charge error impact severity of 3 score: a worked example

Suppose charge error impact severity falls to 3 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. Score refrigerant charge estimate risk for coils, condensers, evaporators, and thermal modules using severity, occurrence, and detection ratings.

The inputs for this scenario

  • Charge error impact severity: 3 score (the input this scenario stresses; the baseline uses 6)
  • Charge error occurrence likelihood: 4 score (held at the documented default)
  • Charge error detection difficulty: 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Refrigerant charge estimate risk score = charge impact severity × 0.40 + charge error occurrence × 0.35 + charge error detection risk × 0.25.
  • Charge estimate risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Charge impact severity works out to 3 score at these inputs.
  • Charge error occurrence works out to 4 score at these inputs.
  • Detection risk works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where charge error impact severity sits at 6 score and the headline result is 4.55 score, this scenario comes in 26.37% below the baseline at 3.35 score.
  • It computes a single weighted risk score from charge error severity, occurrence and detection, with weights of 0.40, 0.35 and 0.25 respectively. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Charge estimate risk score: 3.35 score (headline result)
  • Charge impact severity: 3 score
  • Charge error occurrence: 4 score
  • Detection risk: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Refrigerant Charge Estimate calculator, set charge error impact severity to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.