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Evaporative Cooler Size Calculator

Swamp-cooler CFM for dry climates.

Inputs

Inputs and assumptions

Cooled floor area.

Average ceiling height.

20 mild, 30 average, 40+ hot desert. Dry climates only.

Result

Cooler size (CFM)
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House volume (cu ft)
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What to check

  • Cooled volume
  • Local humidity (dry only)

Related calculators

Rule-of-thumb screening estimate, not an ACCA Manual J calculation. Confirm with a room-by-room Manual J load calculation and installer quotes before buying equipment.

Saved calculations

Keep the assumptions with the result.

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