Home & Garden: House, Home & Yard - Weather.com

AC: Turn It Down Or Leave It Running?

June 28, 2025

Meteorologist Sara Tonks answers the summer’s hottest question: Should you leave your A/C running or turn it off when you’re not home? From smart thermostat tweaks to simple tricks like changing your air filter, using ceiling fans and boosting airflow, Tonks shares expert tips to keep your home cool and your energy bills in check.