Why Turning Off the AC Is Not Ideal

Energy Efficiency: In most cases, it takes less power to maintain a comfortable, consistent temperature than to cool a house from a much higher temperature. Therefore, keeping the AC on at a moderate setting can be more energy-efficient.

Humidity Control: Additionally, in humid climates, leaving the AC on at a higher temperature helps prevent mold, mildew, and potential damage to electronics and wood surfaces.

Comfort Upon Return: Moreover, setting your AC higher—but not off—when you’re away allows the system to work less to reach your desired temperature. As a result, your home will feel more comfortable upon your return.

Recommendations

• Use a Programmable Thermostat: For example, a smart thermostat can be programmed to automatically raise the temperature while you’re out and lower it before you return. This way, you save energy without sacrificing comfort.

• Close Blinds and Curtains: In addition, keeping blinds and curtains closed blocks out the sun’s heat, helping your home stay cooler for longer periods.

• Consider Your Climate: Especially in extremely hot and humid areas, maintaining some level of cooling with a higher setpoint is crucial to manage indoor moisture effectively.

When to Consider Turning It Off

However, if you’re leaving for an extended period—such as a vacation lasting several days or more—turning off the AC entirely can result in greater energy and cost savings.