An easy-to-install ductless system has proven technology that is far more energy efficient that traditional HVAC and up to 40 percent more efficient that window units.
Here's how a ducted system works inefficiently; it notices that the temperature is, for example, two degrees higher that what it ought to be. It turns on, works frantically to pump cool air throughout the home and when it senses the temperature has lowered, it shuts off. Gradually, the space warms up again.
On the other hand, the Mitsubishi Electric ductless systems uses an INVERTER-driven compressor to provide exact control 100 percent of the time. They constantly adjust to even the slightest temperature changes in the room so that is doesn't fluctuate - and they don't waste money or energy of the zones where you spend little time.
The ductless unit is installed to deliver room-by-room comfort in the spaces you
choose. The majority of your cooling and heating energy (and money) goes where you need it, and not where you don't. In this way, you get personalized comfort in the rooms you use most. This is known as "zone control".
Most ductless systems have earned the ENERGY STAR, which means savings as they operate, as well as applicable ENERGY STAR rebates.
Some units are eligible for state or federal tax credits, or local utility discounts. The biggest long-term savings comes from using a system that works efficiently. According the the ENERGY STAR website, "Replacing your system with an ENERGY STAR certified model could cut your heating and cooling costs by 30 percent."
Big or small, no matter where you live, outdated technology costs more to operate. Ducted systems work round-the-clock sending cold or warm air to vacant rooms and they also use unnecessary energy as the temperature naturally fluctuates. INVERTER-driven compressors in ductless systems ensure the optimal efficiency of the energy they expend; you save even more by concentrating your temperature control efforts in only the rooms that matter.