🩺 Personal Care & Health
How Much Does a CPAP Machine Cost to Run?
At the current U.S. average rate of 18.3¢/kWh (July 2026), a cpap machine costs about $1.78 per month at typical usage — 8 hours/day.
Per hour
0.7¢
at 30–90 W
Per day
5.9¢
8 hours/day
Per month
$1.78
9.7 kWh
Per year
$21.37
117 kWh
A CPAP with a heated humidifier draws 30–90 watts through the night, totaling a modest few kilowatt-hours a month. The humidifier and heated hose account for most of the draw — the blower itself uses very little.
Calculate it for your home
Per hour
0.7¢
Per day
5.9¢
Per month
$1.78
Per year
$21.37
Uses 9.7 kWh/month at 18.3¢ per kWh.
Cheapest and most expensive states
Monthly cost at typical usage, using each state's current average residential rate.
Cost in every state
| State | Rate (¢/kWh) | Per hour | Per month | Per year |
|---|---|---|---|---|
| Louisiana | 12.7 | 0.5¢ | $1.24 | $14.83 |
| Nevada | 12.8 | 0.5¢ | $1.25 | $14.95 |
| Utah | 13.1 | 0.5¢ | $1.27 | $15.30 |
| North Dakota | 13.4 | 0.5¢ | $1.30 | $15.65 |
| Idaho | 13.7 | 0.5¢ | $1.33 | $16.00 |
| Tennessee | 13.7 | 0.5¢ | $1.33 | $16.00 |
| Kentucky | 13.8 | 0.6¢ | $1.34 | $16.12 |
| Nebraska | 13.8 | 0.6¢ | $1.34 | $16.12 |
| Arkansas | 14.3 | 0.6¢ | $1.39 | $16.70 |
| Oklahoma | 14.4 | 0.6¢ | $1.40 | $16.82 |
| Wyoming | 14.4 | 0.6¢ | $1.40 | $16.82 |
| Mississippi | 14.5 | 0.6¢ | $1.41 | $16.94 |
| Washington | 14.7 | 0.6¢ | $1.43 | $17.17 |
| Florida | 15.0 | 0.6¢ | $1.46 | $17.52 |
| Montana | 15.0 | 0.6¢ | $1.46 | $17.52 |
| North Carolina | 15.2 | 0.6¢ | $1.48 | $17.75 |
| Kansas | 15.3 | 0.6¢ | $1.49 | $17.87 |
| Arizona | 15.4 | 0.6¢ | $1.50 | $17.99 |
| South Dakota | 15.4 | 0.6¢ | $1.50 | $17.99 |
| South Carolina | 15.5 | 0.6¢ | $1.51 | $18.10 |
| West Virginia | 15.8 | 0.6¢ | $1.54 | $18.45 |
| Texas | 15.9 | 0.6¢ | $1.55 | $18.57 |
| Iowa | 16.0 | 0.6¢ | $1.56 | $18.69 |
| Oregon | 16.0 | 0.6¢ | $1.56 | $18.69 |
| Missouri | 16.1 | 0.6¢ | $1.57 | $18.80 |
| New Mexico | 16.1 | 0.6¢ | $1.57 | $18.80 |
| Georgia | 16.3 | 0.7¢ | $1.59 | $19.04 |
| Alabama | 16.4 | 0.7¢ | $1.60 | $19.16 |
| Indiana | 16.7 | 0.7¢ | $1.62 | $19.51 |
| Colorado | 17.0 | 0.7¢ | $1.65 | $19.86 |
| Minnesota | 17.5 | 0.7¢ | $1.70 | $20.44 |
| Virginia | 17.6 | 0.7¢ | $1.71 | $20.56 |
| Delaware | 18.5 | 0.7¢ | $1.80 | $21.61 |
| Wisconsin | 19.1 | 0.8¢ | $1.86 | $22.31 |
| Illinois | 19.2 | 0.8¢ | $1.87 | $22.43 |
| Ohio | 19.5 | 0.8¢ | $1.90 | $22.78 |
| Maryland | 21.4 | 0.9¢ | $2.08 | $25.00 |
| Pennsylvania | 21.7 | 0.9¢ | $2.11 | $25.35 |
| Michigan | 23.1 | 0.9¢ | $2.25 | $26.98 |
| Vermont | 23.8 | 1.0¢ | $2.32 | $27.80 |
| Connecticut | 24.2 | 1.0¢ | $2.35 | $28.27 |
| Washington, D.C. | 25.2 | 1.0¢ | $2.45 | $29.43 |
| New Jersey | 25.2 | 1.0¢ | $2.45 | $29.43 |
| New Hampshire | 26.6 | 1.1¢ | $2.59 | $31.07 |
| Rhode Island | 28.3 | 1.1¢ | $2.75 | $33.05 |
| Alaska | 28.8 | 1.2¢ | $2.80 | $33.64 |
| New York | 29.9 | 1.2¢ | $2.91 | $34.92 |
| Massachusetts | 30.5 | 1.2¢ | $2.97 | $35.62 |
| Maine | 32.4 | 1.3¢ | $3.15 | $37.84 |
| California | 33.6 | 1.3¢ | $3.27 | $39.24 |
| Hawaii | 48.0 | 1.9¢ | $4.67 | $56.06 |
How to lower the cost
- Humidifier and heated-hose settings drive most of the power — use the lowest comfortable levels.
- For camping or backup batteries, disabling humidification triples runtime.
- A dedicated CPAP battery sized around 90 Wh typically covers one night without humidification.
Frequently asked questions
How much electricity does a cpap machine use?
A typical cpap machine draws about 40 watts in use. At 8 hours/day, that works out to roughly 0.3 kWh per day, or 9.7 kWh per month.
How much does it cost to run a cpap machine for 1 hour?
At the current U.S. average residential rate of 18.3¢/kWh, one hour costs about 0.7¢. In Louisiana (12.7¢/kWh) it's 0.5¢, while in Hawaii (48¢/kWh) it's 1.9¢.
How much does a cpap machine cost to run per month?
With typical usage (8 hours/day), expect about $1.78 per month at the U.S. average rate — from $1.24 in Louisiana up to $4.67 in Hawaii. Rates are as of July 2026.
Does a cpap machine use a lot of electricity?
Not really — at typical usage it's under 1% of an average home's monthly consumption. Heating, cooling, hot water, and drying are the loads that move bills.