Compare your room size to the BTU rating

  1. 299 Square Feet or Less: 8,000-BTU unit.
  2. 300 to 500 Square Feet: 10,000-BTU unit.
  3. 501 to 700 Square Feet: 12,000-BTU unit.
  4. Over 1,000 Square Feet: 13,000-BTU unit.