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Putting a traditional forced-air system into a home without existing ductwork would entail a large-scale renovation, with contractors opening walls, ceilings, and floors—and sometimes altering the home exterior or individual room dimensions—all to accommodate the network of air conduits. In contrast, zoned systems are compact and noninvasive. A basic Mitsubishi Electric system includes only an outdoor condenser and indoor unit, with refrigerant pipes connecting the two through a discreet three-inch hole. Depending on the home, technicians may be able to complete the installation within a single day.
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