My HVAC contractor is recommending a Carrier dual zone 2.5 ton mini split for my garage space and room above. I'm only familiar with Mitsubishi and Daikin. As well, he is the only contractor who says we need a hyper unit that has the capability of operation below 30 degrees Fahrenheit. We live in MD and while it does go below 30 not for extended periods of time. Since I have a sink in the garage and potentially a bathroom in the dormer above he is recommending a hyper unit. Any thoughts on the Carrier Mini-split?