How Much Electricity Does an Infrared Sauna Use?
How much electricity does an infrared sauna use? The three models compared here cost $0.37 to $0.50 per modeled session using a conservative 75 minute scenario and the June 2026 monthly US residential average electricity price. That scenario includes 30 minutes of warmup and a 45 minute session, with the sauna running at full rated power for the entire period. At four sessions per week, the modeled monthly cost is $6.36 to $8.74. Your actual cost will depend on the model, your utility rate, session length, temperature setting, and how the heaters cycle.
See exactly how the estimate is calculated
The 1.25 hours includes a 30 minute warmup and a 45 minute session. Rated power is applied across the full 75 minutes, even though heaters may cycle after the cabin reaches its set temperature. This makes the scenario deliberately conservative.
The electricity rate is 18.34 cents per kWh, the June 2026 monthly US residential average published by the US Energy Information Administration. It is a dated national reference, not a forecast for an individual household.
A worked example
Dynamic Bergamo is rated at 2,200 W, or 2.2 kW.
2.2 kW × 1.25 hours × $0.1834 = $0.50 per modeled session
For four sessions per week, the monthly calculation uses 52 weeks divided by 12 months:
$0.50435 × 4 × 52 ÷ 12 = $8.74 per modeled month
Cost comparison by model
| Model | Rated power | Energy per session | Cost per session | Monthly at 4 sessions/week |
|---|---|---|---|---|
| Dynamic Bergamo, DYN-6440-01 | 2,200 W | 2.75 kWh | $0.50 | $8.74 |
| Dynamic Lugano, DYN-6336-02 | 2,200 W | 2.75 kWh | $0.50 | $8.74 |
| Golden Designs GDI-8020-03 | 1,600 W | 2.00 kWh | $0.37 | $6.36 |
These estimates use the same run time, rate, and full power assumption for every model, making the wattage difference easy to compare.
Your local electricity rate
Utility rates vary by location and plan. Replace $0.1834 in the formula with the energy charge per kWh shown on your bill.
Rated power and model size
Rated power is the main model input. Bergamo and Lugano use 2.2 kW in this calculation. GDI-8020-03 uses 1.6 kW. Capacity alone does not establish wattage, so use the specification for the exact SKU.
Warmup and session duration
Every additional minute changes total electricity use. A longer warmup or session raises the estimate, while a shorter total run time lowers it. At this rate, an extra 15 minutes changes the 2,200 W example by about $0.10, so the difference in total dollars remains small.
Frequency of use
The monthly figures assume four sessions per week. Multiply the estimated session cost by your planned weekly frequency, then by 52 and divide by 12. Some owners in colder northern US climates may use their sauna more often in fall and winter, then reduce their frequency during hot summer months.
Temperature and heater cycling
The model assumes full rated power for all 75 minutes. In normal operation, heaters may cycle as the cabin reaches and holds the selected temperature, so actual consumption can be lower. Room conditions and temperature choices also affect run time.
Three models chosen to show the cost difference
We selected these three saunas because they show two rated power levels across different capacities and technologies. All three carry a supplier best seller label.
Dynamic Bergamo, DYN-6440-01
Selected as a four person, 2,200 W example.
2,200 W · Dedicated 120V, 20A circuit
$0.50
Dynamic Lugano, DYN-6336-02
Selected as a three person, 2,200 W example.
2,200 W · Dedicated 120V, 20A circuit
$0.50
Golden Designs GDI-8020-03
Selected as a two person, 1,600 W example.
1,600 W · Dedicated 120V, 15A circuit
$0.37
FAQs
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Sources & methodology
The estimates use current Kinaura catalog data, Golden Designs rated power and electrical specifications, a 75 minute full power scenario, and the EIA June 2026 monthly US residential average of 18.34 cents per kWh. Monthly estimates assume four sessions per week. Last reviewed September 4, 2026.
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