Cooling-Only Electric Cost Tool
Monthly AC Operating Cost Calculator
Use this calculator when a bill spikes, when comparing efficiency, or when deciding whether comfort settings and maintenance could reduce runtime.
Last updated June 5, 2026Reviewed by Climate Control Services team
Quick answer
How much does it cost to run AC per month in Florida?
Monthly AC operating cost is driven by system size, SEER2 efficiency, cooling hours, days used, and electric rate. A 3-ton AC running heavily in Florida can add a noticeable cooling-only cost before fixed fees and non-HVAC electric use.
How This Calculator Works
Monthly kWh = tons x 12,000 / SEER2 / 1,000 x hours per day x days per month. Monthly cooling cost = monthly kWh x dollars per kWh.
Florida Factors to Review
South Florida bills often rise when thermostat setbacks, dirty filters, duct leakage, low airflow, humidity, or aging equipment force the AC to run longer.
Electric Rate Defaults
The calculator presets are editable public planning defaults checked June 5, 2026. Palm Beach County defaults to FPL because CCS is based in Boynton Beach. FPL published a 2026 typical 1,000-kWh bill of $136.64 for most Florida customers. Tampa Electric published a January 2026 1,000-kWh bill expectation of $176.89 and component rates. Duke Energy Florida published 2026 residential bill reductions, so its preset is a planning value that should be replaced with the customer bill rate when available.
Calculator FAQs
Does this show my whole electric bill?
No. It estimates cooling energy only. Your actual bill also includes other appliances, lighting, pool loads, fixed charges, taxes, and utility-specific riders.
What if my AC runs almost all day?
High runtime can come from weather, thermostat settings, dirty filters, duct leakage, low refrigerant performance, coil condition, poor insulation, or an aging system that needs service.
Can maintenance lower monthly AC cost?
Maintenance can help when filters, coils, drains, airflow, thermostat setup, or outdoor-unit clearance are increasing runtime or reducing efficiency.
Estimate Disclaimer
Calculator results are planning estimates for homeowner education. They are not a Manual J load calculation, diagnostic finding, utility bill audit, financing approval, rebate confirmation, or installed-price quote. Climate Control Services can inspect the home, review equipment, and explain written options before work begins.