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Shower Room Ventilation
Considering the use of proper ventilation is necessary particularly in the design and construction of new homes. They tend to be extremely tightly sealed and if not properly ventilated, serious problems can occur because of moisture trapped inside.
An air extractor fan should always be installed to remove moisture from the shower room. These typically are controlled by the use of a string or switch located well away from any water source. Other extractor fans turn on automatically when there is a need. Bathrooms will generally be fitted with a through-the-wall type extractor. Others require a line extractor that can remove the air over a much greater expanse distance.
Designers of ventilation systems must adhere to strict requirements and building codes. It is important for them to address issues such as assessing extraction rates, power, placement, return air sources, energy concerns, and ducting. Of major concern is the airflow. Moisture in the air must flow effortlessly and efficiently away from the source. Ensure efficient flow by following some general rules when placing the fan.
• Install high on the wall or in the ceiling far from the main air inlet.
• Provide for fresh air to enter the room by using grilles.
• Do not discharge the exhaust air into a source used by appliances using fuel other than electricity.
• Do not place the fan where temperatures will be greater than fifty degrees Celsius.
• Do not place the fan within reach of anyone using the shower or bath, or where water spray can reach it.
• Follow all wiring requirements.
• Insulate the fan if necessary.
• Use appropriate ducting.
Keep in mind that the shorter the travel distance of the air being removed the greater the efficiency of the fan. In addition, try to keep the air traveling in a straight a line as possible to avoid slowing down the airflow.
