While all of our Mr. Slim units are compact and lightweight, the M-Series is designed specifically for tight spaces. But don't be fooled. The powerful M-Series delivers plenty of cool or warm air to almost any size room. And unlike window units, Mr. Shin's small size, color, and mounting position means it blends in well.

Mr. Slim systems need no ductwork. There's only a small, 3-inch opening connecting the indoor and outdoor units. This means easy installation, less mess, and a better looking home.

First its small design, smart functionality, and lack of ductwork plus inverter technology (MSZ, MXZ) make it
 energy-efficient. Second the unit's fan is designed to deliver air quietly with only a gentle whoosh. (That's why Mr. Slim is the first choice for thousands of churches, schools, and libraries. Shhh!) And because each system installs with only a 3-inch opening for connecting the indoor and outdoor units, you don't have to worry about thieves seeing an inviting window unit which is easy to remove. With Mr. Slim systems you can sleep in quiet comfort and with a sense of security.