Practical ways to cut cooling costs without sacrificing comfort during peak Texas heat.
Cooling is usually the single biggest driver of a summer electric bill in San Antonio. Here are the changes that make the most real difference, starting with the ones that cost nothing.
Every degree you raise your thermostat while you're away or asleep saves on runtime. A programmable or smart thermostat that automatically adjusts when you're not home (or when everyone's asleep) is one of the highest-impact, lowest-effort changes you can make.
A clogged filter forces your system to work harder to push the same amount of air, driving up energy use. In San Antonio's climate, most homes need a filter change every 30-60 days during peak season — see our full filter guide for specifics.
A ceiling fan doesn't lower the actual room temperature, but the airflow makes you feel a few degrees cooler — which means you can raise your thermostat setpoint without losing comfort. Just remember to turn fans off in empty rooms, since they only cool people, not spaces.
Blinds, curtains, or solar screens on west-facing windows can meaningfully cut how much heat builds up in your home during peak afternoon sun — reducing how hard your AC has to work in the hottest part of the day.
Gaps around doors, windows, and attic access points let cooled air escape and hot air in. Weatherstripping and caulk are cheap fixes with a real payback in reduced runtime.
A system that hasn't been serviced in a while loses efficiency gradually — dirty coils, low refrigerant, and worn components all make your AC work harder for the same result. A seasonal tune-up catches these issues before they show up as a bigger bill or a breakdown.
If your attic insulation is thin or aging, heat transfers into your living space more easily, forcing your AC to run longer to compensate. Adding blown insulation is one of the more effective ways to reduce the load on your system long-term. See our insulation service page for details.
If your bills have climbed noticeably without a change in habits, it's often a sign your system is losing efficiency. Our $129 diagnostic (waived with repair) can tell you exactly what's driving it up.
Sometimes the most effective long-term fix is a higher-efficiency system. Our SEER ratings guide explains how upfront cost trades off against monthly savings so you can decide what makes sense for your situation.
We'll take a look and tell you honestly what's driving it up.
