With summer fast approaching, it’s time to know how to use your air conditioner to the max to keep your home cool and healthy. We all tend to turn on our AC and hope for the best, but understanding how to configure it properly can really make a difference.

Here is a little guide, which I created for myself to remember, to help you get the most out of your air conditioner, especially when you leave the windows open.

Managing Air Quality with Open Windows

Overview of Modes:

• Cool Mode: To be used when windows are closed to effectively cool indoor air. If you use it with the windows open, you’ll get condensation and a sky-high electricity bill!
• Fan Mode: Perfect when the windows are open, as it circulates the air without cooling or dehumidifying it.
• Drying Mode: Best used with windows closed to effectively reduce indoor humidity.

Potential Issues with Open Windows:

• Using Cool Mode with open windows can cause condensation and mold issues.
• Using Drying Mode with open windows reduces its effectiveness, as the humid outdoor air keeps entering.

Recommendations for Hot and Humid Days:

• Use a Fan: To circulate air and stay comfortable without increasing humidity.
• Use a Dehumidifier: To reduce humidity even with the windows open.

Window Management:

• Open windows early in the morning or late in the evening when it’s cooler.
• Close them during the hottest and most humid times of the day.

By following these tips, you can keep your indoor environment pleasant and healthy even with the windows open.