Toolnoza

ENGINEERING TOOL

Compressor Duty Cycle Calculator

Calculate compressor running percentage from on/off times and compare it with the manufacturer’s rating.

Compressor Duty Cycle Calculator

FREE ONLINE TOOL

Formula and assumptions

DC (%) = 100 × ton/(ton + toff); ton,max = (ton + toff) × DCrated/100.

Use the manufacturer’s specified cycle duration and ambient conditions. A percentage alone does not establish continuous-running suitability. On-time means motor running; unloaded operation is still running.

STEP BY STEP

How to use compressor duty cycle calculator

  1. Check the input units and assumptions.
  2. Review the result and example.

IN PRACTICE

Example

ton = 6 min; toff = 4 min; DCrated = 75% → DC = 60%; ton,max = 7.5 min.

GOOD TO KNOW

Which formula is used?

DC (%) = 100 × ton/(ton + toff); ton,max = (ton + toff) × DCrated/100. Use the manufacturer’s specified cycle duration and ambient conditions. A percentage alone does not establish continuous-running suitability. On-time means motor running; unloaded operation is still running.

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