Water Heating · Northeast
Cost to run a hot tub in Connecticut
At Connecticut’s average residential rate of 27.37¢ per kWh, a hot tub drawing 1500W for 24 hours a day costs about $74.98 a month. Change the numbers below to match how you actually use yours.
Quick answer
Based on 1500W at a 25% duty cycle (this equipment cycles on and off rather than drawing full power continuously) and 27.37¢/kWh, the Connecticut average for May 2026.
Calculate your own cost
Everything is worked out in your browser. Your numbers are never sent to our server.
— per year
Why the cost differs in Connecticut
Connecticut has the 44th cheapest residential electricity of the 51 US states and territories we track, at 27.37¢ per kWh against a national average of 18.44¢. That is +48.4% compared with the national figure. Connecticut is among the three most expensive states in the country. New England depends on natural gas delivered through pipelines that hit capacity in winter, so cold snaps push generation costs sharply higher exactly when demand peaks. Retail supplier choice exists, so your contracted rate may differ from the state average. Winter heating dominates; summer cooling is short but increasingly significant.
For this appliance specifically, the difference works out to an extra $293 a year over what the same hot tub would cost at the national average rate. Run the identical appliance in Hawaii and it would cost $1,708 a year; in Idaho it would cost $406. That spread of $1,303 is entirely down to location.
At Connecticut's rate this single hot tub accounts for roughly 31% of a typical household's entire annual electricity bill. It is not a rounding error on your statement - it is one of the largest single line items in it.
Connecticut sits above the national average, so the running cost of this hot tub is modestly higher than a typical US household would pay. Usage habits still matter more than location at this rate level.
Because Connecticut has retail supplier choice, the state average blends many different contracted rates. If you have shopped for a plan, your own price per kWh is the number to put in the calculator.
| Location | Rate | Per month | Per year |
|---|---|---|---|
| Connecticut this page | 27.37¢ | $74.98 | $899 |
| US average | 18.44¢ | $50.52 | $606 |
| Idaho cheapest state | 12.35¢ | $33.83 | $406 |
| Hawaii most expensive | 52.00¢ | $142 | $1,708 |
Connecticut electricity rate trend
Rates in Connecticut have moved from 27.19¢ to 27.37¢ per kWh over the last twelve months of published data. Nationally, residential rates rose about 6.2% year over year.
2025-06 to 2026-05 · cents per kWh
About running a hot tub
Maintaining temperature year-round makes a hot tub one of the most expensive appliances a household can own, often exceeding the refrigerator several times over. Cover quality is the dominant cost variable.
What actually changes the cost
- Nameplate wattage is not running cost. This hot tub draws about 1500W when active, but cycles roughly 25% of the time it is switched on, so effective consumption is near 375W.
- At typical use this is a major load - around 3,285 kWh a year. Efficiency upgrades here pay back faster than on any small appliance.
- Models vary widely, from about 1000W to 6000W. Check the nameplate on your own unit rather than assuming an average, because the spread is more than 2x.
- Because this runs continuously, small wattage differences between models compound into large annual differences.
- If your utility offers time-of-use pricing, shifting this load off-peak can cut its cost substantially without using any less energy.
How we worked this out
The arithmetic is simple and we would rather show it than hide it. Divide watts by 1,000 to get kilowatts, multiply by hours of use and by the duty cycle to get kilowatt-hours, then multiply by your rate:
1500W ÷ 1000 × 24h × 25% = 9.000 kWh/day × 27.37¢ = $2.463 per day
One honest caveat: Connecticut’s figure is a state average published by the EIA. Your own utility’s tariff, any time-of-use pricing, fixed monthly service charges and local taxes all shift the real number. Put your actual per-kWh rate into the calculator above for a figure that reflects your bill.
Questions about hot tub running costs
How many watts does a hot tub use?
A typical hot tub draws about 1500 watts while running, with most models falling between 1000W and 6000W. Check the nameplate label or manual for your specific unit - the range is wide enough that averages can mislead.
How much electricity does a hot tub use per day?
At around 24 hours of use a day and a 25% duty cycle, that works out to roughly 9 kWh per day, or about 270 kWh a month. Your actual figure depends on your usage and model.
Why does the cost differ so much between states?
Residential electricity rates across the US range from about 12.35 cents per kWh in North Dakota to 46.62 cents in Hawaii - nearly a fourfold difference. The same hot tub, used identically, therefore costs almost four times as much to run in the most expensive state as in the cheapest.
Is it cheaper to run a hot tub at night?
Only if you are on a time-of-use or variable tariff. On a flat rate, the time of day makes no difference to cost. If you are on time-of-use pricing, off-peak hours are typically materially cheaper, and shifting this load can reduce its cost without reducing usage.