3 Reasons to Run Your A/C Unit Instead Of Opening Your Windows

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As fall weather approaches, it’s tempting to turn off the A/C open the windows – especially at night as the temperature drops. While those cooler temperatures are a much-welcomed break from the heat, here are a few reason to hold off just a little longer before cracking the windows.

1. High Relative Humidity

Temperatures may be dropping, but relative humidity tends to stay high late into the summer season. The right indoor humidity levels keep you feeling cool in the summer and warm in the winter. Since warm summer air tends to hold more moisture, your A/C system works to remove moisture from the air and lower the humidity indoors. Optimum humidity level depends on your personal preference, but the recommended comfortable range is between 30-60%.

2. Muggy Sleeping Conditions

What does this have to do with windows? High indoor humidity can create muggy conditions that make it difficult to sleep. So, even if the temperature is low, check the relative humidity forecast as well – if it is above 55%, consider leaving the windows shut.

3. Mold and Bacteria Growth

Additionally, keeping your home below 60% humidity will prevent the growth of bacteria, mold, and other allergens. Sustained high relative humidity makes you and your family more susceptible to allergic reactions, asthma attacks, viruses, and respiratory infections.

A/C Repair & Furnace Repair

Next time you think about opening your windows, be sure to check both the temperature and relative humidity to ensure they are in the optimum range for comfort and health. If the humidity is below 55%, you’re good to go! As always, should you need HVAC services, Lenz Heating & Cooling is just a phone call away. We offer 24-hour emergency service at no additional cost.