Hot tub: electricity cost calculator
Quick answer: a typical hot tub costs about $51/month while in use at the U.S. average electricity price (18.44¢/kWh) — about $606 per year. Your number depends on wattage, runtime and your state — calculate it below.
A 240 V hot tub heater draws 4–6 kW while heating, plus 100–300 W of continuous filtration. Total daily heater runtime of 2–4 hours is typical for a covered tub in a mild climate; cold weather and a worn cover push it up sharply.
9.00 kWh/day used · 274 kWh/month in use · 3287 kWh/year at 18.44¢ per kWh
Low, typical and heavy use
Monthly cost while in use, at the U.S. average price of 18.44¢/kWh.
| Scenario | Watts | Hours/day | Per month |
|---|---|---|---|
| Light use | 1,500 W | 1.8 h | $15.15 |
| Typical | 3,000 W | 3.0 h | $50.51 |
| Heavy use | 6,000 W | 4.5 h | $151.54 |
Common questions
How much does a hot tub add to the bill?
Most owners land between $30 and $80 per month depending on climate, temperature setpoint, and cover quality. A good insulating cover is the single biggest cost saver.
Cost in every state
Monthly cost of a typical hot tub (3,000 W, 3h/day) at each state's average residential price, May 2026.
| State | Avg price | Per month |
|---|---|---|
| Alabama | 16.77¢ | $45.94 |
| Alaska | 28.23¢ | $77.33 |
| Arizona | 15.23¢ | $41.72 |
| Arkansas | 14.36¢ | $39.34 |
| California | 33.25¢ | $91.08 |
| Colorado | 16.16¢ | $44.27 |
| Connecticut | 27.37¢ | $74.98 |
| Delaware | 19.38¢ | $53.09 |
| District of Columbia | 25.40¢ | $69.58 |
| Florida | 15.17¢ | $41.56 |
| Georgia | 15.84¢ | $43.39 |
| Hawaii | 52.00¢ | $142.45 |
| Idaho | 12.35¢ | $33.83 |
| Illinois | 23.85¢ | $65.33 |
| Indiana | 18.15¢ | $49.72 |
| Iowa | 14.14¢ | $38.73 |
| Kansas | 15.13¢ | $41.45 |
| Kentucky | 14.98¢ | $41.04 |
| Louisiana | 14.15¢ | $38.76 |
| Maine | 28.63¢ | $78.43 |
| Maryland | 21.77¢ | $59.64 |
| Massachusetts | 28.82¢ | $78.95 |
| Michigan | 22.01¢ | $60.29 |
| Minnesota | 16.95¢ | $46.43 |
| Mississippi | 16.16¢ | $44.27 |
| Missouri | 13.68¢ | $37.47 |
| Montana | 14.67¢ | $40.19 |
| Nebraska | 13.59¢ | $37.23 |
| Nevada | 13.60¢ | $37.26 |
| New Hampshire | 27.33¢ | $74.87 |
| New Jersey | 23.27¢ | $63.75 |
| New Mexico | 14.12¢ | $38.68 |
| New York | 29.93¢ | $81.99 |
| North Carolina | 15.09¢ | $41.34 |
| North Dakota | 13.61¢ | $37.28 |
| Ohio | 19.52¢ | $53.47 |
| Oklahoma | 13.38¢ | $36.65 |
| Oregon | 16.27¢ | $44.57 |
| Pennsylvania | 21.55¢ | $59.03 |
| Rhode Island | 29.46¢ | $80.70 |
| South Carolina | 16.18¢ | $44.32 |
| South Dakota | 15.73¢ | $43.09 |
| Tennessee | 14.47¢ | $39.64 |
| Texas | 16.44¢ | $45.04 |
| Utah | 12.96¢ | $35.50 |
| Vermont | 24.89¢ | $68.18 |
| Virginia | 17.61¢ | $48.24 |
| Washington | 14.95¢ | $40.95 |
| West Virginia | 16.80¢ | $46.02 |
| Wisconsin | 19.74¢ | $54.08 |
| Wyoming | 14.80¢ | $40.54 |
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Methodology & sources
Cost = watts ÷ 1,000 × hours × price per kWh. Electricity prices are average residential prices by state from the EIA Electric Power Monthly, Table 5.6.A (May 2026). EIA averages include delivery charges and taxes but are not any specific utility tariff — for an exact figure, use the rate from your own bill. Wattage presets reflect common product ranges; check your appliance's nameplate or a plug-in power meter for its true draw.
Last verified: July 30, 2026. Prices refresh automatically each month when EIA publishes new data.