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  • About Natural Ventilation

    About Natural Ventilation Natural ventilation is the uncontrolled air movement in and out of the cracks and small holes in a home. In the past, this air leakage usually diluted air pollutants enough to maintain adequate indoor air quality. Today, we are sealing those cracks and holes to make our hom   Read More>

  • Whole-house Ventilation

    The decision to use whole-house ventilation is typically motivated by concerns that natural ventilation won't provide adequate air quality, even with source control by spot ventilation. Whole-house ventilation systems provide controlled, uniform ventilation throughout a house. These systems use one   Read More>

  • Ventilation for cooling

    Ventilation for cooling is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with techniques to avoid heat buildup in your home. In some climates, natural ventilation is sufficient to keep the house comfortable, although it usually needs to be   Read More>

  • Notice of 2017 Chinese New Year Holiday

    The annual Chinese traditional grand festival-Spring Festival is coming once again. Migrant workers are prepared to go home for the reunion, especially factory workers. “Xiaonian”, festival on the 23rd or 24th of the 12th month of the lunar year, when sacrifices are made to the kitchen god, falls on   Read More>

  • EC Fan with Variable Speed Controls

    When PBM Motor and Fan describes their range of EC fan, it stands for Electronically Commutated fan with a brushless DC motor. Compared with basic DC motor, EC motor control is more accurate with the mechanical commutation been replaced by electronic circuitry. Each PBM EC Motor is equipped with so   Read More>