As summer heats up, the age-old question resurfaces: Should you leave your air conditioning running all day, or is it better to turn it off when you’re not home? Experts weigh in, and the answer might surprise you.

The consensus among HVAC professionals is generally to avoid switching your A/C completely off. Instead, adjust your thermostat to a higher, more energy-efficient setting when you're away. A comfortable range is typically between 75–78°F (approximately 24–26°C). This prevents your home from fully heating up, which requires significantly more energy to cool down upon your return.

Why is this more efficient? When an A/C system is forced to cool a completely hot house, it operates at maximum capacity for an extended period. This not only consumes more energy but also puts extra strain on the unit, potentially shortening its lifespan. Maintaining a consistent, slightly higher temperature minimizes this strain and energy consumption.

Beyond thermostat settings, other factors contribute to A/C efficiency. Regularly cleaning or replacing air filters is crucial. Dirty filters restrict airflow, forcing your A/C to work harder. Ensure that vents are unobstructed to promote proper circulation throughout your home. Using fans, both ceiling and portable, can further enhance cooling by distributing air more effectively.

Taking advantage of cooler evening and nighttime temperatures can also reduce A/C reliance. Opening windows during these hours allows for natural ventilation, but remember to close them when the temperature starts to rise to trap the cool air inside. Smart thermostats can automate these adjustments, optimizing energy usage based on your schedule.

In summary, the key to summer A/C efficiency lies in moderation and smart practices. Avoid extreme temperature fluctuations, maintain your equipment, and leverage natural cooling methods. By following these simple tips, you can keep your home comfortable while also keeping your energy bills in check throughout the summer months.