Passive ventilation is the process of supplying cool, fresh air to an indoor space and letting warm, stale air escape without using mechanical systems. Instead, it utilizes openings, such as windows and doors. The size and placement of these openings can be used to guide air through your home.
Here are a few essential tips on how to make the most of passive ventilation using windows in your home.
You need to have clear, unobstructed pathways throughout your home in order to maximize passive ventilation. Adopt open-plan spaces, or install high windows between rooms to promote air circulation. Make sure that you have openable windows on each side of your home to take advantage of microclimate breezes. If your home is already designed for passive ventilation, all you will need to do is open and close the windows to cool down your living space and improve the quality of air you breathe.
You need larger-sized windows opening to the breeze on one side and smaller, higher windows on the opposite side to encourage cool air flow. While the appropriate ventilation technique for your home will depend on the climate and microclimate of your area, the general rule of thumb is to have window replacement units that can be opened outward occupy at least 5% of the floor space for each living area. For rooms that see high moisture content, such as the kitchen and bathroom, this value tends to be higher.
You need to ventilate your house for a minimum of 15 minutes at least 5 times each week for passive ventilation to be fully effective. To allow cool breeze inside during early morning, open your windows on the south and east sides of the building. To keep air flowing, open your windows on the north and west sides.
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