If you've lived in St. George through a full summer, you know what the electricity bill looks like in July and August. With nearly four months of triple-digit temperatures and AC systems running around the clock, energy costs are one of the biggest household expenses in Washington County.
The good news: many of the most effective strategies for reducing your energy bill are free or low-cost, and the savings compound year after year.
Free Strategies That Make a Real Difference
Optimize Your Thermostat Schedule
Every degree of thermostat setpoint costs roughly 3–5% on your cooling bill. Setting your thermostat to 78–80°F instead of 72°F during the hottest part of the day (noon to 6 pm) can cut cooling costs by 15–25%. Pre-cool in the morning (cool to 72–74°F before 10 am) so the home retains coolness during peak heat hours. A programmable or smart thermostat automates this strategy perfectly.
Use Ceiling Fans Effectively
Ceiling fans don't actually cool air — they create a wind-chill effect that makes rooms feel 4–6°F cooler. Running ceiling fans allows you to raise the thermostat 4–6°F without noticing the difference. Important: turn fans off when you leave the room — they only help people, not empty spaces.
Block Direct Sunlight
South and west-facing windows are the biggest solar heat gain culprits in St. George. Closing blinds or curtains on these windows from mid-morning through late afternoon blocks radiant heat before it enters the home. This simple habit can reduce cooling load by 10–15%.
Minimize Heat-Generating Appliances During Peak Hours
Run the dishwasher, clothes dryer, and oven after 8 pm when outdoor temperatures have dropped. These appliances add meaningful heat to the home and increase AC load. Switching to a microwave, air fryer, or outdoor cooking during summer evenings is a legitimate energy-saving strategy in our climate.
Low-Cost Upgrades with High Returns
LED Lighting Throughout the Home
If you haven't already replaced all incandescent and CFL bulbs with LEDs, do it now. LED bulbs use 75% less energy and generate far less heat — which matters in a St. George summer when every watt of heat inside means more AC runtime.
Air Sealing (Weatherstripping and Caulk)
Air leaks around doors, windows, electrical outlets, and plumbing penetrations let cool air out and hot air in constantly. A $30 investment in weatherstripping and caulk, properly applied, can noticeably reduce cooling bills. This is the most cost-effective home improvement available.
Water Heater Temperature Reduction
Most water heaters are factory-set at 140°F. Reducing to 120°F reduces heat loss and cuts water heating costs by 6–10%. In St. George's summer, your incoming cold water isn't that cold — a lower setpoint is often more than adequate.
Higher-Investment Improvements with Long-Term Payoff
- Attic insulation upgrade: Attic heat gain is the #1 energy loss in Southern Utah homes. Upgrading from R-19 to R-38 can reduce cooling costs by 15–20%.
- HVAC upgrade to high-efficiency unit: Replacing a 10-SEER unit with a 16–18 SEER system can cut cooling costs 30–40%.
- Insulated garage door: An R-16 garage door dramatically reduces heat transfer from an uninsulated garage into living space.
- Professional energy audit: An energy testing service identifies exactly where your home is losing energy and prioritizes improvements by return on investment.
Ready to find out exactly where your energy dollars are going? Contact High Desert Garage Door & More for an energy audit and HVAC assessment in St. George and throughout Southern Utah. 📞 (435) 680-2859
Need help with garage door repair, HVAC, or energy testing in Southern Utah? Call (435) 680-2859 — same-day service available.
