Calculator

Vacuum pump CFM calculator

Enter system cooling tons. Get a 3.5 / 5 / 7 CFM portable vacuum pump class or NO_MATCH.

Result

Enter values to begin.

Required CFM ≈ system tons × 1. Worked check: 2-ton mini-split → 3.5 CFM class.

Guides

Limits, hose effects, and when to stop shopping this ladder.