Most of today’s home ventilation systems rely on mechanical means to regulate indoor airflow. However, passive ventilation through windows can provide adequate ventilation, or at least complement existing mechanical ventilation provided by HVAC systems. Renewal by Andersen® of Phoenix shares how passive ventilation works and how you can make the most of it.
How Passive Ventilation Works
Passive ventilation employs the use of airflow created without the aid of fans, blowers or other mechanical means. The easiest form of passive ventilation is through the wind. A window facing the right direction can catch a breeze, forcing airflow through the room. Since the air movement is created by outdoor conditions, there is nothing needed to do except to open the windows when it’s breezy.
Another way to provide passive ventilation is through negative pressure: the difference in air pressure between indoor and outdoor spaces. Two openings in a room – one for releasing indoor air, another for taking in outdoor air – will create this kind of airflow. An example of this is the ventilation system used on sloped roofs. Exhaust vents are located at the highest point of the roof, usually the ridges, while intake vents are located at the lowest point, usually at the soffits.
How To Get the Most Out of Passive Ventilation
You might be wondering why you need to bother with passive ventilation when your air conditioning system’s air handler creates adequate airflow. It helps to think of passive ventilation not as a replacement or alternative to your home’s HVAC system, but as a complementary system. Passive ventilation helps maintain indoor air quality by flushing out indoor air pollutants. A cool breeze can also help cool down your home, reduce your energy consumption and ease the strain on your HVAC system.
To get the most out of passive ventilation, you need windows that will allow optimal airflow. Casement windows are ideal for catching a breeze because they make use of the full window opening. Double hung windows are ideal for small rooms because you can open the window in such a way that it has two openings, creating airflow from negative pressure.
Renewal by Andersen® of Phoenix is the leading provider of window replacement services in Phoenix, Scottsdale and the surrounding communities. Give us a call at (602) 772-5059 or fill out our contact form to schedule an appointment.