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How Much Does It Cost to Run a Hot Tub in Illinois? (2026)
A hot tub heater runs several hours a day to maintain temperature, and the circulation pump runs much longer. Inflatable hot tubs are the most expensive to run because they lose heat quickly through thin walls.
A typical hot tub (3,000 W) costs $0.60 per hour, or about $72.00 per month at 4 hours a day in Illinois. Expensive to run
| Wattage | Per hour | Per day | Per month | Per year |
|---|---|---|---|---|
| Low (1,500 W) | $0.30 | $1.20 | $36.00 | $438.00 |
| Typical (3,000 W) | $0.60 | $2.40 | $72.00 | $876.00 |
| High (6,000 W) | $1.20 | $4.80 | $144.00 | $1,752 |
Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 4 h/day ≈ 4,380 kWh per year.
One hour of a hot tub (3.0 kWh) is the same electricity as
- 17km in an electric car
- 30hours of TV
- 67hours of a laptop
- 333hours of an LED bulb
In Illinois, with electricity at $0.20 per kWh (source: EIA Table 5.6.A, 2026-06), a typical hot tub costs $0.60 per hour and about $876.00 per year at 4 hours a day. That is about 11% more than the national average for the US ($64.80 per month), because electricity in Illinois costs $0.20 per kWh against $0.18 nationally. Each $1.00 of electricity buys roughly 1.7 hours of use.
How to lower the cost of running a hot tub
- Keep the insulated cover on whenever the tub is not in use. Most heat escapes through the water surface.
- Lower the set temperature by a few degrees between uses.
- Place the tub out of the wind or add a windbreak.
- Inflatable tubs can use two to three times the electricity of a hard-shell model.
In standby it draws about 100 W, which adds roughly 876 kWh ($175.20) per year if it is never unplugged.
Frequently asked questions
How much does a hot tub add to the electricity bill?
Commonly 3 to 8 kWh a day in mild weather and much more in winter, so it can be one of the largest household loads.
Is it cheaper to keep a hot tub on all the time?
For regular use, yes. Reheating from cold uses more than maintaining temperature under a good cover.
How much does an inflatable hot tub cost to run?
Often 8 to 15 kWh a day because of poor insulation, especially outdoors in cool weather.
Compare with
Cost by region
US states
- Alabama
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- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
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- Mississippi
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- New Jersey
- New Mexico
- New York
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- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Canadian provinces
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