⚡ How Much Does Your AC Cost to Run per Month?
Calculate how much electricity your AC uses per day, month, and 3-month season — and how much that costs on your local tariff. Compare Inverter vs Non-Inverter, in USD, INR, AED, SAR, EUR, GBP or AUD.
📏1. AC Sizing & Technology
⏱️2. Usage & Cooling Load
💡3. Electricity Tariff & Currency
The Real Cost of Air Conditioning in Florida
Florida is the only US state where air conditioning is effectively a 12-month appliance. Between the heat, the humidity, and hurricane-season mugginess, the average Florida home devotes 40–50% of its entire electric bill to cooling — the highest share in the nation. The upside: Florida’s electricity is reasonably priced at an average of about $0.15 per kWh in 2026, which the calculator above uses as its default. Check your FPL, Duke, or TECO bill for your exact rate and enter it for a personalised estimate.
Florida Utility Rates at a Glance (2026)
| Utility | Service Area | Typical Residential Rate |
|---|---|---|
| FPL (Florida Power & Light) | East coast, Southwest FL — the state’s largest utility | 13 – 15 ¢/kWh |
| Duke Energy Florida | St. Petersburg, Orlando area, Central FL | 15 – 17 ¢/kWh |
| TECO (Tampa Electric) | Tampa & Hillsborough County | 14 – 16 ¢/kWh |
| OUC (municipal) | Orlando | 12 – 14 ¢/kWh |
| JEA (municipal) | Jacksonville | 12 – 14 ¢/kWh |
FPL bills also carry fuel and storm-restoration surcharges that move year to year — the ¢/kWh printed on your bill already includes them, which is why entering your own rate beats using any statewide average.
Humidity: Florida’s Invisible AC Tax
In Miami or Tampa, your air conditioner spends a large share of its energy dehumidifying rather than cooling. Air at 88°F and 70% humidity carries far more heat energy (enthalpy) than the same temperature in a dry climate. Practical consequences for Florida homes:
- Don’t oversize: an oversized AC short-cycles — it cools the air quickly but shuts off before wringing out moisture, leaving the home cold-but-clammy and encouraging mold. Correct sizing matters more in Florida than anywhere.
- Inverter and variable-speed systems excel here because long, low-speed runtimes remove far more moisture per kWh. Compare the technologies with the calculator above.
- Keep indoor humidity near 50%: a home at 78°F/50%RH feels as comfortable as 75°F at high humidity — letting you raise the setpoint and save.
Florida-Specific Ways to Cut the Bill
- Run ceiling fans and raise the thermostat 2°F — fans cost about $2/month versus roughly $15–25/month per extra degree of AC cooling in a Florida summer.
- Check duct leakage: in typical Florida homes ducts run through 130°F attics, and a 15% leak means you’re paying to cool the attic.
- Enroll in FPL’s On Call or Duke’s EnergyWise programs for bill credits in exchange for brief cycling on peak days.
- After a hurricane outage, give the AC 5+ minutes before restart (or use a delay timer) to protect the compressor from voltage instability.
Frequently Asked Questions — Florida
How much does it cost to run AC per month in Florida? A typical 3-ton central unit running 9–10 hours/day at 15¢/kWh lands around $180–$280/month in summer, and $60–$120 even in “winter”. The calculator above lets you model your own tonnage and hours.
Should I turn my Florida AC off when on vacation? No — set it to 82–84°F instead. A fully sealed, unconditioned Florida home breeds mold within days; a high setpoint costs little and protects the house.
Why is my FPL bill higher than my neighbor’s? Duct condition, insulation, AC age, and thermostat habits dominate — two identical floor plans can differ by 40% in cooling kWh.