| 摘要 |
A system for preventing growth of mold and mildew in buildings comprises an air diffusion device covering an opening of a heating ventilation and air conditioning duct. A heating cable is affixed to a flange of the air diffusion device that extends along a periphery of a screen covering the opening. The cable is activated to heat the surfaces of the air diffusion device to a temperature above dew point and prevent condensation.
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