9,000 BTU, 8 h a day
- Input
- 900 W, fator de uso 60%
- Expected output
- 130,08 kWh = R$ 133,59
Includes 1 W of standby over the 16 idle hours.
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air conditioner electricity cost per month brazil
The 9,000, 12,000 and 18,000 BTU air conditioner models are on the tool's list with typical power and compressor duty factor. Adjust hours per day, swap in the power from your unit's label and read the monthly impact.
Includes 1 W of standby over the 16 idle hours.
Same tariff and taxes.
For large rooms.
Overstates: the compressor does not run constantly.
Multiply its power in kW (watts divided by 1,000) by the hours of use per day and by the days in the month. A 5,500 W shower used 30 minutes a day for 30 days uses 5.5 x 0.5 x 30 = 82.5 kWh. For fridges and air conditioners, also multiply by the duty factor, because the compressor cycles on and off.
With about 1,200 W on the nameplate, it uses up to 1.2 kWh per hour with the compressor running. On average, with a 60% duty factor, that is about 0.72 kWh per hour of use.
It usually uses less because it adjusts speed instead of cycling on and off, but savings vary by model and usage. Check the unit's efficiency label and adjust the duty factor.
No. BTU/h measures cooling capacity, not electrical consumption. The electrical power in watts is on the label and is usually well below the capacity expressed in thermal watts.
Use the timer, close doors and windows, keep the filters clean and choose a temperature that does not push the compressor. Simulate fewer hours a day in the tool's What if scenario.
Enel SP: residential B1 tariff valid until 07/03/2027 (REH 3.596/2026 (03/07/2026)). Source: ANEEL open data.
On the invoice, look for the item table with "Tarifa" and TE/TUSD per kWh, or the "Tarifa sem tributos" / "Tarifa com tributos" field. Add TE and TUSD if they are listed separately. Utility tariffs checked in 10/2026.
Model powers and hours are typical values, in the order of magnitude of efficiency labels (Procel/Inmetro) and datasheets. Edit them with the data from your appliance's label.
Move the controls to see how much each habit weighs on the bill.
ICMS and PIS/COFINS vary by state, consumption band and month. The starting values (18% and 5%) are a starting point: use the percentages from your bill's tax box.