APPLIANCE COST GUIDE
How much does a portable air conditioner cost to run?
Portable air conditioners combine a compressor and fan. Climate, sizing, setpoint and hose installation strongly affect runtime.
Editable estimate
Calculate running cost
Results update as you type.
Estimated monthly cost—30-day month
Daily—
Annual—
Daily energy—
Annual energy—
kW × effective runtime × rate. Effective runtime = hours/day × duty cycle.
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RATE COMPARISON
How your rate changes the cost
Same appliance inputs, using May 2026 EIA residential averages.
Data updatedEIA residential prices · May 2026View Table 5.6.A
Make the estimate more accurate
- Use rated input watts, not BTU cooling capacity.
- Seal the window kit and keep the exhaust hose short.
- Estimate compressor duty cycle from a typical hot day.
Presets are estimates. Use your model label, an EnergyGuide figure or a safe meter reading when available.