How much does it cost to run a baby bottle warmer?
A baby bottle warmer costs about 7.2¢ per hour, 3.8¢ a day, $1.16 a month and $14 a year at typical use (30 minutes a day) and the U.S. average rate of 17.99¢/kWh. Bottle warmers draw 200-600 W for 3-5 minutes per bottle; six bottles a day is about 70 kWh a year.
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Cost by hours of use
| Hours per day | kWh/day | Per day | Per month | Per year (all year) |
|---|---|---|---|---|
| 1 hour | 0.41 | 7.4¢ | $2.25 | $27 |
| 2 hours | 0.81 | 15¢ | $4.44 | $53 |
| 4 hours | 1.61 | 29¢ | $8.82 | $106 |
| 8 hours | 3.21 | 58¢ | $17.57 | $211 |
| 12 hours | 4.81 | 86¢ | $26.32 | $316 |
| 24 hours | 9.60 | $1.73 | $52.57 | $631 |
Cost to run a baby bottle warmer in every state
The same baby bottle warmer costs $10 a year in North Dakota and $34 in Hawaii, at each state's average residential rate (12 months ending July 2026).
| State | Rate | Per hour | Per month | Per year |
|---|---|---|---|---|
| North Dakota | 12.32¢ | 4.9¢ | $0.79 | $10 |
| Idaho | 12.65¢ | 5.1¢ | $0.82 | $10 |
| Nebraska | 12.86¢ | 5.1¢ | $0.83 | $10 |
| Louisiana | 12.99¢ | 5.2¢ | $0.84 | $10 |
| Utah | 13.32¢ | 5.3¢ | $0.86 | $10 |
| Nevada | 13.36¢ | 5.3¢ | $0.86 | $10 |
| Arkansas | 13.43¢ | 5.4¢ | $0.87 | $10 |
| Tennessee | 13.56¢ | 5.4¢ | $0.87 | $10 |
| Oklahoma | 13.70¢ | 5.5¢ | $0.88 | $11 |
| Montana | 13.84¢ | 5.5¢ | $0.89 | $11 |
| Kentucky | 13.92¢ | 5.6¢ | $0.90 | $11 |
| Missouri | 13.95¢ | 5.6¢ | $0.90 | $11 |
| Wyoming | 14.01¢ | 5.6¢ | $0.90 | $11 |
| Washington | 14.12¢ | 5.6¢ | $0.91 | $11 |
| Iowa | 14.13¢ | 5.7¢ | $0.91 | $11 |
| South Dakota | 14.20¢ | 5.7¢ | $0.92 | $11 |
| Mississippi | 14.77¢ | 5.9¢ | $0.95 | $11 |
| North Carolina | 14.77¢ | 5.9¢ | $0.95 | $11 |
| Kansas | 15.09¢ | 6.0¢ | $0.97 | $12 |
| Georgia | 15.12¢ | 6.0¢ | $0.97 | $12 |
| New Mexico | 15.32¢ | 6.1¢ | $0.99 | $12 |
| Florida | 15.39¢ | 6.2¢ | $0.99 | $12 |
| Arizona | 15.40¢ | 6.2¢ | $0.99 | $12 |
| West Virginia | 15.48¢ | 6.2¢ | $1.00 | $12 |
| Oregon | 15.50¢ | 6.2¢ | $1.00 | $12 |
| South Carolina | 15.64¢ | 6.3¢ | $1.01 | $12 |
| Texas | 15.96¢ | 6.4¢ | $1.03 | $12 |
| Minnesota | 16.22¢ | 6.5¢ | $1.05 | $13 |
| Alabama | 16.44¢ | 6.6¢ | $1.06 | $13 |
| Virginia | 16.48¢ | 6.6¢ | $1.06 | $13 |
| Colorado | 16.58¢ | 6.6¢ | $1.07 | $13 |
| Indiana | 16.94¢ | 6.8¢ | $1.09 | $13 |
| Delaware | 17.79¢ | 7.1¢ | $1.15 | $14 |
| Ohio | 18.25¢ | 7.3¢ | $1.18 | $14 |
| Wisconsin | 18.74¢ | 7.5¢ | $1.21 | $14 |
| Illinois | 18.79¢ | 7.5¢ | $1.21 | $15 |
| Pennsylvania | 20.70¢ | 8.3¢ | $1.33 | $16 |
| Maryland | 21.03¢ | 8.4¢ | $1.36 | $16 |
| Michigan | 21.05¢ | 8.4¢ | $1.36 | $16 |
| New Jersey | 23.78¢ | 9.5¢ | $1.53 | $18 |
| Vermont | 23.80¢ | 9.5¢ | $1.53 | $18 |
| District of Columbia | 24.20¢ | 9.7¢ | $1.56 | $19 |
| New Hampshire | 26.67¢ | 11¢ | $1.72 | $21 |
| Alaska | 26.85¢ | 11¢ | $1.73 | $21 |
| Connecticut | 27.99¢ | 11¢ | $1.80 | $22 |
| New York | 28.39¢ | 11¢ | $1.83 | $22 |
| Rhode Island | 29.27¢ | 12¢ | $1.89 | $23 |
| Maine | 29.31¢ | 12¢ | $1.89 | $23 |
| Massachusetts | 30.43¢ | 12¢ | $1.96 | $24 |
| California | 32.99¢ | 13¢ | $2.13 | $26 |
| Hawaii | 43.51¢ | 17¢ | $2.80 | $34 |
How to cut the cost
- Warm bottles in a bowl of hot tap water when possible.
- Use the defrost or slow setting rather than keep-warm, which holds heat for an hour.
- Unplug between feeds if the warmer has a lit standby display.
Cheaper ways to get the job done
Smaller heaters warm one bottle with less energy.
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Compare with similar appliances
| Appliance | Watts | Typical use | Per month | Per year |
|---|---|---|---|---|
| Baby bottle warmer | 400 | 30 minutes a day | $1.16 | $14 |
| Bottle sterilizer and dryer | 500 | 36 minutes a day, 5 days a week | $1.17 | $14 |
| Breast pump | 10 | 1.5 hours a day | $0.08 | $1 |
| Baby monitor | 5 | 24 hours a day | $0.66 | $8 |
| Kids ride-on car (Power Wheels) | 25 | 2 hours a day, 3 days a week | $0.12 | $1 |
| Sound machine | 3 | 10 hours a day | $0.20 | $2 |
Head-to-head comparisons
Frequently asked questions
How much does it cost to run a baby bottle warmer per hour?
A baby bottle warmer drawing 400 watts uses 0.40 kWh per hour. At the U.S. average of 17.99¢/kWh that's 7.2¢ per hour. In North Dakota (12.32¢) it's 4.9¢. In Hawaii (43.51¢) it's 17¢.
How much does it cost to run a baby bottle warmer per month?
At typical use (30 minutes a day), a baby bottle warmer costs about $1.16 a month and $14 a year, at the U.S. average rate. Enter your ZIP in the calculator above for your utility's rate.
How many watts does a baby bottle warmer use?
Most baby bottle warmers use 200 to 600 watts. Plugged in but off, it still draws about 0.5 W of standby power. Check the label on the back or bottom for your model's exact rating.
How many kWh does a baby bottle warmer use?
About 0.21 kWh a day and 77 kWh a year at typical use (30 minutes a day).
Does a baby bottle warmer use a lot of electricity?
No. At about 77 kWh a year it's a small share (0.7%) of the average U.S. home's 10,492 kWh.
Is it cheaper to run a baby bottle warmer or a bottle sterilizer and dryer?
At typical use, a baby bottle warmer costs about $14 a year versus $14 for a bottle sterilizer and dryer. So the baby bottle warmer is cheaper by about $0 a year. Use the comparison table above to compare them at your own settings.
How can I lower the cost of running a baby bottle warmer?
- Warm bottles in a bowl of hot tap water when possible.
- Use the defrost or slow setting rather than keep-warm, which holds heat for an hour.
- Unplug between feeds if the warmer has a lit standby display.
Rates updated 2026-10-21: EIA data through July 2026. Typical wattage and usage reviewed against DOE, ENERGY STAR and manufacturer specs. Methodology.