The M18CF Ductless Split System features a new level of system flexibility and control at your fingertips with the Advanced Inverter Technology. It gives you more options for optimum comfort, control and energy savings. You can adjust temperatures as desired, as the Inverter Technology allows each system to adjust capacity and cooling output to provide only the amount of cooling needed at a given time. All of the Friedrich ductless split systems exceed the new 13.0 SEER requirements. And, 1/3 of the models have super high ratings ranging from 16.5 to 19.0 SEER. The Friedrich ductless split systems have the advantages of a ducted installation without the high material and labor costs. Absolutely no ductwork is required, so most systems can be installed and running in a few hours. Units are fully programmable, so setting and keeping the desired comfort level is a snap. Smart features like "Sleep Timer" and "Energy Saver" allow the user to program the unit for optimum energy savings. The continuous "Air Sweep" auto louvers gently distribute cool or warm air throughout the room. Plus, it lessens security concerns, as there are no worries about intrusions through wall openings or window installations. The Low Ambient Cooling feature cools even when outdoor ambient temperatures fall to 0°F. The wall units are also typically installed well above eye level, making them completely unobtrusive. The neutral color and clean lines blend in with any decor.