“What size AC is needed for a 18 by 12 foot room. 9 foot ceilings. Thank you.”

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• SuzieQ I would recommend at least a 10 -12 BTU unit for the room you described!

  Answered by BigBobby 9 years ago

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• A 10,000 btu air conditioner should be perfect for a room that size. My ceilings are about 9ft as well and the 8,000 btu is just fine.

  Answered by Perfect 9 years ago

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