How Much Does a Hot Tub / Spa Cost to Run?
A hot tub / spa costs approximately $832/year to run at $0.19/kWh. That is $69.35/month or $0.570/hour.
💰 Hot Tub / Spa Running Cost Calculator
Based on 3000W rated power. Actual varies by model and usage.
Hot Tub / Spa Cost at Different Rates
| Rate | Monthly | Annual |
|---|---|---|
| $0.08 | $29.17 | $350 |
| $0.10 | $36.50 | $438 |
| $0.12 | $43.83 | $526 |
| $0.16 | $58.42 | $701 |
| $0.20 | $73.00 | $876 |
| $0.25 | $91.25 | $1,095 |
| $0.30 | $109.50 | $1,314 |
| $0.35 | $127.75 | $1,533 |
Electricity cost to run a Hot Tub / Spa
A typical Hot Tub / Spa draws 3,000 watts when running and operates roughly 4 hours per day on average. That works out to 12.00 kWh per day, 365 kWh per month, and approximately 4,380 kWh per year.
At the US-average residential rate of 18.8 cents per kWh (EIA April 2026), the Hot Tub / Spa costs roughly $823 per year to operate. In cheap-power states like North Dakota or Idaho at about 12.5 cents, it is closer to $556. In expensive states like Massachusetts or New York at about 29.5 cents, it climbs to $1292. In Hawaii at 46.6 cents per kWh, the annual cost is approximately $2041.
Annual cost by state rate
| Rate scenario | Rate (c/kWh) | Annual kWh | Annual cost |
|---|---|---|---|
| North Dakota, Idaho (cheapest) | 12.5 | 4,380 | $556 |
| Texas, Florida | 16.0 | 4,380 | $701 |
| US national average | 18.8 | 4,380 | $823 |
| Massachusetts, New York | 29.5 | 4,380 | $1292 |
| California | 35.3 | 4,380 | $1546 |
| Hawaii (most expensive) | 46.6 | 4,380 | $2041 |
Frequently asked questions
How much electricity does a Hot Tub / Spa use?
A typical Hot Tub / Spa uses about 12.00 kWh per day running 4 hours at 3,000W. That works out to roughly 365 kWh per month and 4,380 kWh per year. Your actual use will vary with how often you run it.
How much does it cost to run a Hot Tub / Spa per month?
At US-average electricity rates (18.8 cents/kWh), running the Hot Tub / Spa costs about $68.62 per month. In low-rate states it can be as little as $45.63; in high-rate states like California, expect closer to $128.84 per month.
What is the annual cost of running a Hot Tub / Spa?
Annual operating cost at US-average rates: approximately $823 per year. The range across US states is roughly $438 (cheapest) to $2041 (Hawaii).
How can I reduce the cost of my Hot Tub / Spa?
Reduce daily runtime, every hour cut saves about $180 per year. Check whether your utility offers a time-of-use plan that aligns with this appliance use pattern.
What watt rating should I expect for a Hot Tub / Spa?
Typical running wattage for a Hot Tub / Spa is around 3,000 watts, with brief startup peaks of up to 11,000 watts. Specific models vary; check the nameplate label on your unit for exact figures. Common variation is plus-or-minus 20 percent of the typical value.
Hot Tub / Spa Energy Usage Explained
A hot tub / spa consumes 3000W. At 4 hours/day for 365 days/year, that is 4,380 kWh annually, about 41.7% of average US household usage (10,500 kWh).
How to Calculate Running Cost
Cost = (Watts ÷ 1000) × Hours × Rate
For your hot tub / spa: (3000W ÷ 1000) × 4 hrs × $0.19/kWh = $2.28/day.
Tips to Reduce Costs
Use time-of-use electricity plans for off-peak rates ($0.05–$0.10/kWh overnight). Upgrade to Energy Star certified models. Use smart plugs or timers. Check rates in your state with our Electricity Cost Calculator.
Disclaimer: Estimates based on rated wattage. Actual consumption varies by model, age, and usage patterns.