The single most impactful change you can make is upgrading an old, inefficient system to a modern high-efficiency unit. Systems manufactured before 2010 often have SEER ratings of 8–10 — today's minimum federal standard for the Southeast is 15 SEER2, and premium units reach 20+ SEER2. That difference in efficiency translates directly to your electricity bill. A homeowner replacing a 10 SEER system with a 18 SEER2 unit can realistically reduce cooling costs by 40–45%.

A dirty or poorly maintained AC system can lose 5–15% of its efficiency per year through clogged coils, low refrigerant, dirty air filters, and worn components. An annual tune-up — ideally in spring before peak season — restores the system to manufacturer-rated efficiency. Cleaning the evaporator and condenser coils alone can reduce energy consumption by up to 15%. Maintenance also catches small issues before they become expensive failures.

One of the highest-return, lowest-cost upgrades available. A smart thermostat learns your schedule and automatically adjusts temperatures when you're asleep or away — eliminating the waste of cooling an empty house to the same temperature as when it's occupied. Setting your thermostat 7–10°F higher while away or asleep can save up to 10% on annual cooling costs. Smart thermostats like the Ecobee or Nest also provide energy usage reports to help you identify patterns.

The U.S. Department of Energy estimates that the average home loses 20–30% of its conditioned air through leaky ductwork before it ever reaches the living space. This is cool air your system worked hard to produce — escaping into unconditioned attics and crawl spaces. Having your ductwork inspected and sealed can dramatically improve delivery efficiency. Similarly, improving attic insulation reduces heat gain and lowers the demand placed on your AC throughout the day.

This is the simplest and most overlooked maintenance task in HVAC. A clogged air filter forces your blower motor to work harder to pull air through the system, increasing energy consumption and reducing airflow to every room in the home. In Florence's dusty summer conditions, filters should be checked monthly and replaced every 1–3 months depending on the filter type and household conditions (pets, dust, allergies). A clean filter also protects the evaporator coil from dirt buildup that degrades efficiency.

Your outdoor condenser unit works by releasing heat from inside your home to the outside air. A condenser sitting in direct afternoon sun has to work significantly harder than one in a shaded location — because it's trying to release heat into already-hot air. Strategically planted shrubs, trees, or shade structures on the west and south sides of the unit can reduce condenser operating temperatures and improve efficiency. Important: maintain at least 2 feet of clearance around the unit for adequate airflow.

Ceiling fans don't lower the temperature of a room — but they create a wind chill effect that makes occupants feel up to 4°F cooler. Using ceiling fans allows you to set your thermostat 4°F higher without a reduction in perceived comfort — and that 4° difference can reduce cooling costs by roughly 8%. The key: make sure fans are set to run counterclockwise in summer (pushing air down), and turn them off when you leave the room — fans cool people, not spaces.

Up to 30% of unwanted heat in a home enters through windows — especially south and west-facing windows during afternoon hours. Closing blinds, curtains, or cellular shades on sun-exposed windows during peak afternoon heat significantly reduces the load on your AC. Reflective window film is a more permanent solution that blocks solar heat gain while maintaining natural light. In Florence's intense summer sun, this is one of the simplest and most cost-effective passive cooling strategies available.

Every heat-generating appliance in your home adds to the cooling load your AC must overcome. Running the oven, clothes dryer, or dishwasher during peak afternoon heat — typically 2–7 PM — forces your AC to work harder during the most expensive part of the day. Shift these tasks to morning or evening hours. Use the microwave instead of the oven when possible. Run the dishwasher on the air-dry setting. Small habit changes across the household add up to meaningful reductions in daily cooling demand.

An oversized AC unit cools a home too quickly — short-cycling on and off before it can properly dehumidify the air, leaving your home feeling clammy despite reaching the set temperature, and wearing out compressor components faster. An undersized unit runs constantly without ever catching up. Both scenarios waste energy and reduce comfort. Proper sizing requires a Manual J load calculation based on your home's square footage, insulation, window area, and orientation — something our licensed HVAC team performs before every new system installation.