Mini splits delivering new levels of efficiency and control

Ductless mini split units are offering greater levels of energy efficiency and control, and are finding their way into super high performance homes.

At the 2015 Greenbuild Expo, Mike Smith, senior marketing manager, residential products, Mitsubishi Electric US, Inc. Cooling & Heating Division, reviewed one of the company's latest residential offerings.

Smith noted that Mitsubishi Electric systems are up to 40 percent more energy-efficient than conventional central air systems and window A/C units, saving consumers an average of $440 per year. At the core of Mitsubishi Electric’s ductless zoning systems is a highly responsive component – the INVERTER-driven compressor – that ensures the system adjusts to temperature fluctuations. Where conventional HVAC models maintain temperature by switching the compressor on and off, INVERTER-driven compressors are maintained by finely tuned control of compressor speed. The MSZ-FH line is the most energy-efficient ductless zoning system on the market at 30.5 SEER.

Mini split heat pumps also offer control for zones of the home, and smart controls as well. Zones can be cooled or heated to a specific temperature request and turned off when unoccupied.

“Zoning technology allows homeowners to cool or heat the rooms they use the most (such as the living room), while saving energy in less used areas of the house (such as a guest bedroom),” Smith said. “We’ve been trained from childhood to turn off the lights when we leave a room to save energy; ductless zoning systems allow us to do this with the HVAC as well.”

Read more about energy efficient heating and air conditioning.


Topics: Connected Homes / Smart Homes, Heating & Cooling, Passive House, Trade Show

Companies: Mitsubishi Electric Solar Solutions


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