Nashville Mini Split HVAC Systems Mitsubishi Electric ductless cooling and heating technology offers a welcome alternative to the traditional systems we all grew up with. Because it focuses on individual rooms and living spaces rather than on a central air system, it's more energy-efficient, more flexible, and easier to install - as proven by decades of successful use in Europe, Asia, and across the globe. It is not surprising that ductless is the fastest growing segment of the American air conditioning and heating market. Our products reduce energy costs and solve problems such as: Hot and Cold Rooms Additions/Renovations Enclosed Patios Homes Without Space for Ductwork Larger, Multi-Zone Living Spaces How Our Ductless System Works Ductless systems pump cooled or heated refrigerant directly to wall or ceiling mounted air handling units through small lines. Each room or living space has its own air-handling unit and each unit has its own wireless electronic temperature control system. Here's how the system works in a single room application. Indoor Unit - uses refrigerant to cool or heat air and quietly streams it where you need it in the living room space. Outdoor Unit - has an inverter-driven heat pump that cools or warms refrigerant and sends it inside to an air handler through small lines. Wireless Control Unit - conveniently allows you to adjust temperature, fan speed and more... at the touch of a button. We have 12 models ranging from 2,800 to 48,000 BTUs. Each specifically designed to power a single-indoor unit for single room applications - or up to 8 indoor units for multiple-room applications. More than 25 ENERGY STAR(R) qualified models including efficiency ratings as high as 30.5 SEER. Contact Donelson Air Service Experts Heating & Air Conditioning for your FREE on-site consultation.