Then, before things start to heat up, close the windows and draw the blinds to keep that cool, fresh air inside as long as possible.įor more help with natural ventilation, contact us at Air Assurance. Keep them open at night or in the early morning, when the weather is cooler. However, when you open them is also important. So how often should you open your windows? It's recommended that you do so once a day, for at least five minutes. If the air outside is warmer than your thermostat setting, you're raising your indoor temperature, making your AC work harder to cool your home. Moreover, while cool air may help you save energy, once the weather gets hotter, it has the opposite effect. Pollen and dust can get in, as well as exhaust from passing cars and other sources. The air may be cleaner, but there are still pollutants to worry about. Drawbacks of Natural VentilationĪs great as fresh air is, you can't just leave your windows open all the time. This not only saves energy but it may help extend the life of your system. Fresh air provides natural cooling so your HVAC doesn't have to run as long.

This can also help your system's air filter last longer by filling your house with clean air.Īdditionally, letting cool air in on a summer day reduces the burden on your AC. Opening two windows on opposite sides of a room provides a cross breeze, letting the bad air out and the good air in.

By opening windows to let that fresh air in, you can improve your indoor air quality. The air in your home is filled with contaminants. Opening your windows, on the other hand, provides great natural ventilation that can reduce your energy bills while keeping your air clean. Your HVAC system circulates and filters your air, but it also uses a lot of energy. Maintaining good airflow throughout your home is important.

Opening and closing windows