Tucson homeowners know the dread of opening their electric bill in July or August. Monthly energy costs of $300 to $500 or more are common during peak summer, with air conditioning accounting for 60 to 70 percent of total electricity usage. Here are ten proven strategies to bring those numbers down.
1. Set Your Thermostat Strategically
Every degree you raise your thermostat above 72 saves approximately 3 percent on cooling costs. Setting your thermostat to 78 degrees when you are home and 85 degrees when you are away can save 15 to 25 percent compared to keeping it at a constant 72. Use a programmable or smart thermostat to automate these adjustments.
2. Change Your Air Filter Monthly
A dirty air filter forces your AC to work harder, using more electricity to push air through the restricted opening. In Tucson's dusty environment, filters clog faster than average. A clean filter ensures optimal airflow and efficiency. This five-minute task can reduce your cooling costs by 5 to 15 percent.
3. Seal Air Leaks
Air leaks around windows, doors, electrical outlets, and plumbing penetrations let hot air into your home and cool air out. Sealing these leaks with caulk, weather stripping, and foam gaskets is one of the cheapest and most effective ways to reduce energy waste. Focus on the areas around your doors and windows first.
4. Add or Upgrade Insulation
If your attic insulation is below R-38, adding more can significantly reduce the heat that enters your home through the roof. Attic temperatures in Tucson can exceed 150 degrees, and inadequate insulation lets that heat radiate into your living space. This upgrade typically pays for itself within 2 to 3 years.
5. Use Ceiling Fans Effectively
Ceiling fans create a wind-chill effect that makes a room feel 4 to 6 degrees cooler. This lets you raise your thermostat a few degrees without sacrificing comfort. Make sure fans spin counterclockwise in summer to push air downward. And remember, fans cool people, not rooms — turn them off when you leave.
6. Block Solar Heat Gain
Direct sunlight streaming through windows is a major heat source. Install blackout curtains, solar shades, or reflective window film on south-facing and west-facing windows. Exterior shade solutions like awnings or shade screens are even more effective because they block heat before it enters the glass.
7. Maintain Your AC System
A well-maintained AC system runs more efficiently than a neglected one. Annual professional maintenance, including coil cleaning, refrigerant check, and electrical inspection, ensures your system is operating at peak efficiency. Deferred maintenance does not save money — it costs more in the long run through higher energy bills and premature system failure.
8. Seal and Insulate Ductwork
Leaky, uninsulated ductwork in your attic can waste 20 to 30 percent of your cooled air. Having your ducts professionally sealed and insulated is one of the highest-impact efficiency improvements you can make. Many Tucson homes, especially those built in the 1970s through 1990s, have significant duct leakage.
9. Use Appliances Wisely
Run your dishwasher, washing machine, and dryer during the evening or early morning when it is cooler. These appliances generate heat that your AC has to work to remove. Cook outside on the grill instead of using the oven. And switch to LED light bulbs, which produce 75 percent less heat than incandescent bulbs.
10. Consider a System Upgrade
If your AC is more than 10 years old, it is likely running at a much lower efficiency than modern systems. Upgrading from an old 10 SEER system to a new 16 to 18 SEER unit can cut your cooling costs by 30 to 40 percent. TEP offers rebates on qualifying high-efficiency equipment that can reduce the upfront cost.
Let Us Help You Save
ABC Water & Air can help you identify the most cost-effective ways to reduce your energy bills. From AC tune-ups to system upgrades to duct sealing, we offer the services that make the biggest impact on your Tucson energy costs. Call (520) 812-1597 for a consultation.