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Since these Duct Free Air Conditioner systems have no ducts, they avoid the energy losses associated with duct work of central forced systems. Duct losses can account for more than 30% of energy consumption for space , especially if the ducts are in an unconditioned space such as an attic....
Consult your local codes before running cables through drop-ceilings. The included Cat5e cable is not plenum-rated, meaning they cannot be used in air ducts. Drop ceilings are considered plenum areas when they are used as an air return for heating/cooling systems and require plenum-rated cables...