Can this be used with a 9K outdoor unit?

This ceiling cassette in particular is for multi zone system use. Condensers for it must have a BTU that is equal to or larger than the BTU of the cassette itself. We have several ceiling cassettes that have a BTU of 9,000, which translates to a tonnage of 0.75 tons. If this is just for a single room, this selection of 0.75 ton mini split systems might help you find what you are looking for. (If link does not work, please click "Read More" to navigate to a page where you can click on it.)

If you have any further questions, please call us and we will be happy to assist you.