Square footage coverage for the 9,000 and 12,000 btu air handlers?

Hello, square foot coverage is determined by many factors such as insulation quality, location, etc... Our Sizing Guide will be able to help indicate exactly what kind of unit you'll be needing for your specific scenario. A very generic estimate could be up to 250sqft for 9k and 500sqft of coverage for the 12k. You can also give us a call and we'll be happy to further assist you. Thanks!