Holiday Energy Savings for Central Florida Homes

The holidays in Central Florida are a unique experience. While the rest of the country bundles up and cranks the heat, we’re opening windows in the evening, hosting gatherings on the patio, and running our AC intermittently on days that hit the low 70s. It’s genuinely pleasant — and it’s also one of the best opportunities of the entire year to significantly reduce your energy bill.

Most homeowners leave money on the table in December by keeping their systems programmed as if it’s still August. Here’s how to do better.

Take Full Advantage of the Weather

Central Florida’s December climate is a gift that most residents underuse from an energy standpoint. Daytime highs typically range from the upper 60s to low 70s; overnight lows dip into the 50s and occasionally into the 40s. Compared to summer, your HVAC system barely needs to work.

Practical ways to maximize free conditioning:

• Open windows in the early morning and evening when temperatures drop into the comfortable 60s and let outdoor air handle the job for free
• Raise your thermostat set point during the day — 74–76°F is comfortable in December weather and requires minimal AC runtime
• Use ceiling fans to improve air circulation and make 76°F feel like 72°F without touching the thermostat
• Switch to “fan only” mode at night on cool evenings rather than running full cooling cycles

The biggest opportunity here is behavioral: most households have their thermostat programmed for summer conditions and forget to adjust for the season. A smart thermostat that learns seasonal patterns can handle this automatically.

Understand What’s on Your Current Bill

If your December Duke Energy or OUC bill looks higher than you’d expect given the mild weather, it’s worth a closer look at the line items. Florida utilities routinely include fuel adjustment charges, storm recovery surcharges, and other variable components that affect your total even when base consumption is low.

Understanding your bill structure helps you see where your money is actually going — and whether changes in behavior or efficiency will meaningfully move the needle. Usage charges are the component you can most directly control, and HVAC remains the dominant driver even in December.

Adjust Your Thermostat for the Holidays Specifically

The holiday season changes your home’s normal patterns in ways worth accounting for:

For gatherings: Body heat from guests is significant — a room full of people can add several degrees of warmth. Pre-cool your home 2–3 degrees before guests arrive rather than reacting after the room gets warm. You’ll use less energy and avoid the “it’s stuffy” complaint.

For travel: If you’re heading out of town for the holidays, adjust your set points for an empty house. Something like 82°F cooling / 58°F heating maintains safe conditions for plants, pets, and the home itself while slashing energy consumption during your absence. This is one of the highest-impact changes you can make — paying to condition an empty house to normal comfort settings is simply wasted money.

For overnight: December nights in Central Florida can be cool enough that you don’t need AC at all. Running the system in fan-only mode or simply opening a window is free — use it.

Watch These Holiday-Specific Energy Drains

Your HVAC system isn’t the only thing working harder during the holidays:

Holiday lighting — If you’re still using traditional incandescent string lights, they produce significant heat in addition to their electrical draw. LED replacements use 75% less electricity and generate far less heat — which slightly reduces your cooling load too.

Cooking — Holiday meals mean heavy oven use, which adds meaningful heat and humidity to your kitchen. Running the range hood and keeping doors open allows that heat to distribute rather than forcing the AC to remove it. Grilling outdoors when weather permits is a real option in December — lean into it.

Space heaters — If one room in your home feels cooler than others, check your vent registers before reaching for a space heater. A closed register, blocked return vent, or simple airflow issue might be the cause — and fixing it costs nothing. A 1,500-watt space heater running for 8 hours is a meaningful daily energy draw, and if you have an underlying airflow problem, the space heater just masks it.

December Is the Best Month to Schedule a Tune-Up

Here’s a scheduling insight worth acting on: December and January are the lowest-demand months for HVAC service in Central Florida. Technician availability is better, scheduling is easier, and there’s no rush. Contrast that with April and May, when everyone is trying to get their systems checked before summer and wait times stretch.

If you’ve been meaning to schedule your annual maintenance, this is the month to do it. You’ll head into cooling season knowing your system is ready, and you’ll have plenty of time to address anything the technician finds before the summer crunch hits.

A professional tune-up covers the basics that directly affect your energy consumption: coil cleaning, refrigerant check, electrical component testing, condensate drain clearing, and a system performance verification. A system running on dirty coils and low refrigerant uses significantly more electricity than a well-maintained one.

A/C Mechanix has been serving the Longwood and Central Florida community since 1986. Call us at (407) 831-8900 to schedule your off-season tune-up — and start the new year with a system that’s genuinely ready for whatever the season brings.