Should You Keep Windows Open with the AC Running?

Leaving a window open while running the air conditioner might seem like a harmless way to enjoy some fresh summer air. However, it’s not advisable and can undermine the effectiveness of your HVAC system. To maximize the effectiveness of your air conditioner, Central Heating & Cooling recommends keeping windows and doors closed while AC is in use. This practice helps maintain a controlled indoor environment, ensuring efficient operation of the cooling system.

Here’s why we think it’s best to keep your windows closed while the air conditioner is running.

Keeping your windows open while your AC is running can have adverse undesirable effects. It reduces the efficiency of your cooling system by allowing warm air from outside to seep in, while also exposing your indoor space to dust and other pollutants, compromising indoor air quality. The ensuing dust can damage your HVAC system by accumulating on its components and coils, hindering its efficiency.

Air conditioners generate the essential cool air that keeps you comfortable during hot weather. Yet, for your HVAC system to function effectively, this cool air must stay indoors. When warm air continually enters through open windows or doors, temperatures inside your house will fluctuate making your HVAC system work harder than it needs to. Hence if you want to properly regulate the airflow and keep a comfortable temperature inside, keep windows and doors securely shut. Even a slightly open window, or a small crack, will allow the cool air to escape.

Try to avoid overworking your air conditioner. When cool air escapes from your home, you’ll find yourself needing to crank up the AC to maintain comfort. Consequently, your HVAC system will likely run for longer durations, receiving minimal breaks. This increased strain can hasten the breakdown of your HVAC unit. Being gentle with your air conditioner can extend its lifespan and result in lower electricity bills. It’s a win-win situation!

We advise you to preserve the air quality in your home by leaving the windows and doors closed. Remember keeping them open not only allows air to escape from your home but also lets in polluted air. Consequently, you and your family could be inhaling dirty air, largely circulated within your home by the air conditioner. 

If you’re looking to improve your indoor air quality further, consider installing an air scrubber. Give us a call today for more details! 

As always we’re here to help with all your HVAC needs.