How Much Does It Cost to Run an Air Purifier?
Most air purifiers use between 30-100 watts, similar to a light bulb. Use this calculator to estimate your monthly and yearly electricity costs based on your specific usage.
Enter Your Details
$ / kWh
US average is ~$0.12/kWh. Check your electric bill for your actual rate.
Estimated Costs
Daily Cost
$0.00
Monthly Cost
$0.00
Yearly Cost
$0.00
kWh per Month
0
Energy Comparison
LED Bulb 10W
Air Purifier (low) 30W
Air Purifier (high) 75W
Desktop Computer 100W
Window AC Unit 500W
How Energy Cost is Calculated
Energy cost is calculated by converting watts to kilowatts, multiplying by hours used, then by your electricity rate.
Daily Cost = (Watts / 1000) x Hours x Rate
- 1 Find your air purifier's wattage (on label or manual)
- 2 Estimate hours of daily use
- 3 Find your electricity rate (check your bill)
- 4 Multiply: (W / 1000) x hours x rate
Energy Saving Tips
Use auto mode to reduce power when air is clean
Energy Star certified models use less power
Running on low speed uses much less energy
Night/sleep modes typically use 5-15 watts
Energy Cost FAQ
Should I run my air purifier 24/7?
For best air quality, yes. At 50W continuous use, it costs only $4-6/month in most areas. The air quality benefits usually outweigh the small energy cost.
Does fan speed affect energy use?
Yes, significantly. Low speed might use 10-20W while high speed uses 50-100W. Auto mode optimizes this based on air quality.
What's the average electricity rate?
US average is about $0.12/kWh, but ranges from $0.08-0.25/kWh depending on location. Check your electric bill for your actual rate.