Sauna electricity cost per session
A 6 kW traditional sauna warmed for 40 minutes and used for 30 uses about 5.2 kWh, roughly $0.95 per session at the US average rate of 18.16¢/kWh (EIA, August 2026 (preliminary)). In Hawaii, the most expensive state, it's $2.48. In Nevada, the cheapest, it's $0.67.
How we estimate it
Harvia says a heater runs at full power for the first 30–40 minutes, then at about 50% to hold temperature. Its example: a 6 kW heater uses 4–5 kWh in the first hour and 3–4 kWh in the second (Harvia). We model full power for 35 minutes, then half power. Longer warm-ups, cold outdoor air and opening the door often all add to it.
| State | Rate | 6 kW traditional | 8 kW traditional | Infrared (1.8 kW) |
|---|---|---|---|---|
| Nevada | 12.72¢ | $0.67 | $0.89 | $0.17 |
| Texas | 15.91¢ | $0.84 | $1.11 | $0.21 |
| Florida | 14.99¢ | $0.79 | $1.05 | $0.20 |
| U.S. Total | 18.16¢ | $0.95 | $1.27 | $0.24 |
| New York | 28.65¢ | $1.50 | $2.01 | $0.38 |
| California | 29.75¢ | $1.56 | $2.08 | $0.40 |
| Hawaii | 47.18¢ | $2.48 | $3.30 | $0.63 |
Every state, per month → · Use your own rate and session length
Safety first. Saunas and cold plunges put real stress on your heart and circulation. If you have a heart condition, high or low blood pressure, are pregnant, or take medication, talk to your doctor before you use one. We don’t make health claims. This site covers costs only.
Prices checked 1 Nov 2026 on retailer sites; methodology. Spot an error? Tell us.