Air purifiers are energy-efficient devices. A typical medium-sized air purifier uses around 50 watts of electricity. If you operate a 50-watt air purifier at the highest fan speed for 12 hours each day, it would only cost approximately $2.16 per month, assuming an electricity rate of 12 cents per kilowatt-hour (kWh).
You can easily determine the electricity consumption (in kWh) and associated cost (in USD) for your air purifier by using:
- The air purifier’s power rating (watts or W)
- Hours of daily operation (1-24 hours)
- Your local electricity rate (cents per kWh)
Use the calculator below to estimate your air purifier’s energy usage and monthly electricity cost:
Formula:
1. Daily Electricity Usage = (Air Purifier Power Rating in watts x Hours of daily use) / 1000
2. Daily Electricity Cost = (Daily Electricity Usage in kWh x Electricity Price in Cents per Kilowatt-hour) / 100
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