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Ductless Mini-Split System for HVAC

DIY Questions and Answer January 28, 2013 Sonia



Q: What is a ductless mini-split system for HVAC in home?

A: A ductless mini-split system is a heating/cooling system comprised of an indoor evaporator and an outdoor condensing unit. The evaporator is connected to the condensing unit by copper tubing and electrical wiring which is passed through a 2-1/2 in. to 3-in. hole. Basically, it’s like a small central air unit with the flexibility of cooling or heating one room or more, much in the same way that you might use a window unit. Mini-split systems locate the noisy compressor and condenser outside the house, like conventional HVAC systems, but they eliminate the need for bulky ductwork by using thin copper. Because there are no ducts, mini-split systems lose less than 5 percent cooling vs. up to 40 percent for conventional forced-air systems. Furthermore, a window A/C unit makes it easy for intruders to enter your home, whereas the mini-split evaporators mount high on a wall, away from the window, providing improved security and a more pleasant view.