How Much Does It Cost to Run a Humidifier in Michigan? (2026)
Ultrasonic and evaporative humidifiers draw 20 to 50 watts. Warm mist models boil water and draw 250 to 300 watts, making them five to ten times more expensive to run.
A typical humidifier (40 W) costs $0.009 per hour, or about $2.76 per month at 10 hours a day in Michigan. Cheap to run
| Wattage | Per hour | Per day | Per month | Per year |
|---|---|---|---|---|
| Low 20 W | $0.005 | $0.046 | $1.38 | $6.90 |
| Typical 40 W | $0.009 | $0.092 | $2.76 | $13.79 |
| High 300 W | $0.069 | $0.69 | $20.69 | $103.45 |
Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 10 h/day for about 150 days a year (the heating season) ≈ 60 kWh per year.
One day of a humidifier (0.96 kWh) is the same electricity as
- 5.3km in an electric car
- 9.6hours of TV
- 21hours of a laptop
- 107hours of an LED bulb
In Michigan, with electricity at 23.0¢ per kWh (source: EIA Table 5.6.A, 2026-06), a typical humidifier costs $0.009 per hour and about $13.79 per year at 10 hours a day. That is about 25% more than the national average for the US ($2.20 per month), because electricity in Michigan costs 23.0¢ per kWh against 18.3¢ nationally. Each $1.00 of electricity buys roughly 108.7 hours of use.
How to lower the cost of running a humidifier
- Choose cool mist over warm mist. The humidity result is the same.
- Use a hygrometer and stop at 40 to 50 percent humidity.
- Clean it weekly. Mineral buildup makes ultrasonic models work harder.
In standby it draws about 1 W, which adds roughly 9 kWh ($2.01) per year if it is never unplugged.
Frequently asked questions
How much does it cost to run a humidifier all night?
A 40 watt cool mist unit for 10 hours uses 0.4 kWh.
Do warm mist humidifiers use a lot of electricity?
Yes. At 300 watts they use as much as a small heater.
Does a humidifier use power when the tank is empty?
Most shut off automatically and draw about a watt.
Cost by region
US states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Canadian provinces
Related appliances
- Electric Blanket100 W typical
- Heat Pump (Ducted or Mini-Split)2,000 W typical
- Baseboard Heater1,500 W typical
- Portable Fan (Box or Pedestal)50 W typical
Use the generic electricity cost calculator · Which uses more? Take the quiz