AC Electricity Consumption Calculator

Understanding AC Power Consumption

Air conditioning is often the largest electricity consumer in homes during summer months, accounting for 40-70% of total electricity bills. Understanding your AC's power consumption helps you budget effectively and make informed decisions about usage patterns and equipment upgrades.

How AC Power Consumption Works

AC power consumption is measured in kilowatts (kW), and your bill reflects kilowatt-hours (kWh) used. The formula is simple:

• Daily consumption: Wattage × Hours ÷ 1,000 = kWh
• Monthly cost: kWh × Rate × Days
• Example: 1.5 kW × 8 hours = 12 kWh/day × $0.12 = $1.44/day

Typical Power Draw by AC Size

Approximate power consumption varies by tonnage and efficiency:

• 0.75 Ton: 0.7-1.0 kW (700-1,000 watts)
• 1.0 Ton: 1.0-1.3 kW (1,000-1,300 watts)
• 1.5 Ton: 1.5-2.0 kW (1,500-2,000 watts)
• 2.0 Ton: 2.0-2.5 kW (2,000-2,500 watts)
• 3.0 Ton: 3.0-3.5 kW (3,000-3,500 watts)

Factors Affecting Consumption

Actual consumption varies based on several factors:

• Efficiency rating: 5-star uses 15-25% less than 3-star
• Inverter vs non-inverter: Inverters save 25-40%
• Temperature setting: Each degree below 24°C adds 3-5%
• Outdoor temperature: Higher outdoor temps increase consumption
• Room insulation: Poor insulation increases runtime
• Filter condition: Dirty filters increase consumption 5-15%

Tips to Reduce AC Electricity Bills

• Set thermostat to 24-25°C: Comfortable and efficient
• Use ceiling fans: Feel cooler without lowering thermostat
• Clean filters monthly: Maintain airflow efficiency
• Seal air leaks: Prevent cool air loss
• Use timers: Don't cool empty rooms
• Close curtains: Reduce solar heat gain