Air purifiers are clutch for fresh vibes without breaking the bank. Picture this: a solid medium-sized one, like 50 watts, running full tilt for 12 hours a day. In 2025, that’s about $3.06 a month at the U.S. average rate of 17 cents/kWh (thanks, EIA). Less than a streaming sub—pretty sweet, right?
Wanna nail down your own purifier’s cost? It’s simple. You just need:
- Power rating (watts): Flip to the label or manual—most hover between 10W on chill mode to 60W on beast mode.
- Daily hours: How long’s it humming? 6 hours? All day? Your call.
- Your electric rate: Check your bill—17 cents/kWh is the national average now, but it’s 45 cents in Hawaii or 11 cents in North Dakota.
Plug those into our calculator below, and you’ll get your energy use (in kWh) and monthly cost (in USD). Real numbers, no fluff.
Quick Hack: Fan speed’s a game-changer. That 50W on high might sip just 15W on low—big savings if you’re not cranking it nonstop. Curious about a solid pick? Our updated Levoit Core 300 review breaks down its wattage and why it’s still a fan fave. Check it—we’re all about helping you pick smart.
Hit the calculator below and see how cheap clean air can be:
2. Monthly Cost = Daily kWh × 30 × Rate per kWh
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