Windows and Passive Ventilation: What You Need to Know

Passive ventilation is defined as the use of windows, doors, vents and other openings to allow cool, fresh air into your home and let stale air escape. This type of ventilation works best if the air has clear, uninterrupted passages throughout your living space. Here’s how homeowners can make the most of passive ventilation using their windows.

Windows and Passive Ventilation

Encouraging Airflow

In order to encourage the free flow of air, you will need to place a large-sized window opening toward the breeze on one side of the room and smaller, higher windows on the opposite side. Keep in mind that the optimal ventilation for your home will depend on various factors, such as the climate and microclimate of the area you reside in, including the prevailing breezes.

As a general rule, the area of the windows that can be opened up to the outside should occupy a minimum of 5% of the total floor area for each room. For areas that frequently encounter high levels of moisture, such as the kitchen and bathroom, the ideal percentage tends to increase.

Maximizing Ventilation

Keeping your home ventilated for at least 15 minutes at least 5 times each week increases the effectiveness of passive ventilation. If you want to allow cool breezes into your living space during the morning hours, you will want to open your east- and south-facing windows. If your home has more than one level, place operable windows on each floor. As hot air rises, windows up high can be left agape on upper levels to encourage air circulation during the summer months.

Whether you need to upgrade your traditional windows or custom picture windows, look no further than Renewal by Andersen® of Houston. Call (281) 547-1147, or fill out our convenient online form to set up an initial appointment.