8 Ways to Lower Your Energy Bills This Summer in Central Florida

Central Florida summers are not mild. From June through September, daily highs routinely exceed 90°F, humidity makes it feel even hotter, and your air conditioner runs nearly around the clock to keep up. For most Orlando-area homeowners, the AC system accounts for 50–60% of their total electric bill during summer months.

The good news: there’s real room to cut that number without being uncomfortable. Here’s how.

Set Your Thermostat Strategically

The Department of Energy recommends 78°F when you’re home as the optimal balance of comfort and efficiency for warm climates. Every degree you set below 78°F increases your cooling costs by approximately 3–5%.

A programmable or smart thermostat makes this easy. Program it to ease up a few degrees while you’re at work and cool down about 30 minutes before you arrive home. You’ll walk into a comfortable house without paying to cool an empty one all day. Most modern smart thermostats learn your schedule automatically after a few weeks.

Seal Air Leaks — Especially in Attic Ductwork

Leaky ducts are one of the most underappreciated sources of wasted cooling in Central Florida homes. When conditioned air escapes through duct connections in your attic before it reaches your living space, you’re paying to cool air that never benefits anyone.

Beyond ductwork, common leak points in Florida homes include:

• Weather stripping around entry doors that has cracked or pulled away
• Gaps around window frames and casings
• Electrical outlets and switches on exterior walls
• The connection where interior walls meet the ceiling, especially in older homes

Sealing these leaks can reduce cooling costs by 10–20% — often more in older homes with original windows and doors.

Use Ceiling Fans to Their Advantage

Ceiling fans don’t lower the temperature in a room — they create a wind-chill effect that makes you feel 4–6 degrees cooler. This lets you raise your thermostat set point by a few degrees while maintaining the same perceived comfort level.

Two important rules: First, make sure your fans are set to spin counterclockwise in summer (when viewed from below) to push air downward. Second, fans cool people, not rooms — turn them off when you leave. Running fans in empty rooms wastes electricity without any benefit.

Keep Your System Maintained

This one is unsexy but highly effective. A neglected AC system uses significantly more electricity than a well-maintained one — dirty coils, low refrigerant, and worn components all reduce efficiency and extend run times.

At minimum:

• Replace your air filter every 1–3 months; more frequently if you have pets or high dust levels
• Schedule professional maintenance once a year, ideally in spring before heavy cooling season begins
• Don’t ignore small performance changes — they usually get worse, not better, on their own

A professional tuneup typically pays for itself in energy savings within a few months during Florida summers.

Reduce Solar Heat Gain Through Windows

Florida’s intense sun adds substantial heat load to your home through windows, particularly those facing south and west. Simple steps to reduce this:

• Close blinds or cellular shades on sun-facing windows during the afternoon hours (typically 11am–4pm)
• Install solar film on high-exposure windows — quality films can block 40–70% of solar heat without significantly darkening the room
• Light-colored or reflective window treatments help more than dark ones
• If you have large south or west-facing windows and are planning landscaping improvements, shade trees on those exposures provide long-term passive cooling

Shift Heat-Generating Activities

Cooking, running the dishwasher, doing laundry, and taking hot showers all add heat and humidity to your home. In summer, the AC then has to remove that heat — meaning your oven running on a hot afternoon effectively increases your cooling bill.

Some practical adjustments:

• Grill outdoors instead of using your oven when possible
• Run the dishwasher and clothes dryer in the evening, when outdoor temperatures are lower
• Use exhaust fans in the kitchen and bathrooms to vent heat and moisture directly outside
• Even switching from incandescent to LED lighting reduces heat output noticeably, since about 90% of incandescent energy becomes heat

Control Indoor Humidity

In Central Florida, humidity management is inseparable from comfort and cooling efficiency. When indoor relative humidity is high, 78°F feels like 82°F and your AC runs longer trying to compensate.

Your air conditioner dehumidifies as it cools, but it’s not always sized or optimized for maximum moisture removal. Running the AC fan on “AUTO” rather than “ON” allows the coil to drain moisture between cycles rather than blowing it back into the air. If humidity is consistently above 60% indoors despite the AC running normally, a whole-home dehumidifier may be worth considering.

Consider a System Upgrade if Yours Is Aging

If your system is 12–15 years old, it’s operating at a fraction of its original efficiency — and likely well below the efficiency of modern systems. Today’s high-SEER equipment uses variable-speed compressors that modulate output based on demand rather than cycling fully on and fully off. The result is more consistent comfort, better dehumidification, and substantially lower energy use.

A rough benchmark: moving from a 10 SEER unit (common in older Central Florida homes) to a 16+ SEER system typically reduces cooling energy consumption by 30–40%. With the federal 25C tax credit covering up to 30% of qualifying equipment and installation costs, the economics of upgrading have improved significantly.

Call A/C Mechanix at (407) 831-8900 for an honest assessment of your current system’s efficiency and a quote on what an upgrade would look like for your home and budget.