St. George residents know the drill: when July arrives, the electric bill spikes. Air conditioning accounts for the majority of summer energy costs in Southern Utah, where temperatures regularly exceed 105°F. The good news is that several simple changes can meaningfully reduce your cooling costs without sacrificing comfort.
1. Keep Your Air Filter Clean
A dirty air filter is the single most common cause of reduced AC efficiency. When airflow is restricted, the system runs longer to achieve your set temperature—burning more electricity. During Southern Utah summers, replace or clean your filter every 30 days. It takes five minutes and can reduce energy consumption by 5–15%.
2. Use a Programmable or Smart Thermostat
Set your thermostat to 78°F when you're home and 85°F when you're away. Every degree above 72°F saves roughly 3% on cooling costs. A smart thermostat learns your schedule and adjusts automatically—many homeowners save $150–$300 per year after installation.
3. Block Solar Heat Gain
Up to 30% of unwanted heat enters through windows. In Southern Utah's intense sun, closing blinds or curtains on south- and west-facing windows during the hottest part of the day (10am–4pm) can significantly reduce your AC load. Exterior shading like awnings or trees makes an even bigger long-term difference.
4. Use Ceiling Fans Strategically
Ceiling fans don't lower room temperature—they make you feel cooler through a wind-chill effect. Set fans to run counterclockwise (standard summer mode) and you can raise your thermostat 4°F without noticing the difference. Turn fans off when you leave the room—they cool people, not spaces.
5. Seal Air Leaks
Air escaping through gaps around doors, windows, electrical outlets, and attic hatches forces your AC to work overtime. In a poorly sealed Southern Utah home, conditioned air can escape rapidly. Weatherstripping, caulk, and foam sealant are inexpensive and can reduce cooling costs by 10–20%.
6. Run Heat-Generating Appliances at Night
Ovens, dishwashers, and dryers generate significant heat. Running them during the hottest part of the day forces your AC to compensate. Shift laundry and cooking to evenings—ideally after 8pm when outdoor temperatures drop—and your AC's job gets noticeably easier.
7. Schedule Annual AC Maintenance
A well-maintained AC unit operates 15–25% more efficiently than a neglected one. Annual maintenance includes cleaning the coils, checking refrigerant levels, lubricating moving parts, and testing electrical components. A $100–$150 tune-up often pays for itself in the first month of summer. Call Crofts Heating and Air at (435) 635-7838 to schedule before the heat arrives.
