Reading the answer of coverage 753.5/86/59 at installed heights 2/6/7 feet.

Thank you for your question. Each 9,000 BTU air handler can easily heat and cool up to 325 sq. ft. for most weather conditions. That means the system shown here is good for up to 650 sq. ft. In extreme cold additional heating may be required. For more assistance, please give us a call.