How Much Does It Cost to Run an Air Conditioner Per Day?

Air conditioner costs vary based on wattage, usage hours, and electricity rates. Here’s how to estimate daily cooling costs.


Daily Cost Formula

AC wattage × hours used × electricity rate

Example (1,000W AC running 8 hours/day at $0.20/kWh):

Daily cost:
1 kW × 8 × $0.20 = $1.60/day


Typical Daily Costs

  • Window AC: $1.00–$2.50/day
  • Portable AC: $1.50–$3.00/day
  • Split AC: $0.80–$2.00/day

Tips to Reduce AC Cost

  • Use a smart thermostat
  • Clean filters
  • Close blinds during peak heat
  • Seal air leaks
  • Raise temp 1–2°C