If you’re wondering if a mini-split in Anaheim Hills, CA, would be good for you, the answer will depend on your situation. Mini-splits are another name for ductless heat pumps, and a mini-split air handler cools one room. Many people install one in a tool shed or garage, where no ducted AC can reach, while others install one in a room addition they’ve built rather than extend their ducts to it. There are technical reasons for doing this; the extra room could throw off the air balance in a ducted unit.