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Portable AC Size Calculator

Portable BTU plus real SACC cooling output.

Inputs

Inputs and assumptions

Room floor area.

25 portable baseline (higher than window units).

Result

ASHRAE rating to shop (BTU/hr)
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Actual cooling (SACC est., BTU/hr)
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What to check

  • Room area
  • DOE SACC label on the box

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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