Sauna Electricity Costs: How Much Does It Actually Cost to Run?

Sauna Electricity Costs: How Much Does It Actually Cost to Run?

One of the most common questions from prospective sauna owners: "How much will this add to my electric bill?" The short answer is probably less than you're expecting. The long answer depends on your heater size, session habits, and local electricity rates.

The Quick Formula

Cost per session = (heater kW) x (hours of operation) x (electricity rate per kWh)

The U.S. average electricity rate is roughly $0.16 per kWh (as of early 2026), though this varies significantly by state.

Cost by Heater Type

Traditional Electric Sauna (6-9 kW heater)

• Heat-up time: 30-45 minutes
• Session length: 20-30 minutes
• Total run time: ~1 hour per session (including heat-up)
• Cost per session (6kW): 6 x 1 x $0.16 = $0.96
• Cost per session (9kW): 9 x 1 x $0.16 = $1.44

Note: The heater doesn't run at full power the entire time. Once the sauna reaches temperature, it cycles on and off. Actual consumption is typically 60-80% of the theoretical maximum.

Infrared Sauna (1.5-3 kW)

• Heat-up time: 10-20 minutes
• Session length: 30-45 minutes
• Total run time: ~1 hour
• Cost per session (1.8kW): 1.8 x 1 x $0.16 = $0.29
• Cost per session (3kW): 3 x 1 x $0.16 = $0.48

Cold Plunge with Chiller

• Chillers draw 0.5-1.5 kW and run intermittently to maintain temperature
• Daily cost: typically $0.50-2.00 depending on ambient temperature and insulation

Monthly and Annual Estimates

For a typical 6kW traditional sauna used 4 times per week:

• Per session: ~$0.80 (accounting for cycling)
• Monthly (16 sessions): ~$13
• Annual: ~$155

For a 1.8kW infrared sauna used 5 times per week:

• Per session: ~$0.25
• Monthly (20 sessions): ~$5
• Annual: ~$60

Factors That Affect Cost

• Local electricity rates: California at $0.30/kWh costs roughly double the national average. States like Louisiana at $0.10/kWh cost much less.
• Insulation quality: A well-insulated sauna heats faster and cycles less, reducing consumption
• Climate: Outdoor saunas in cold climates use more energy to maintain temperature
• Session length: Longer sessions cost more, but the difference is modest since the heater is cycling once at temperature
• Heater sizing: A properly sized heater is more efficient than an undersized one that runs constantly

Putting It in Perspective

Running a sauna 4 times a week costs roughly the same as a single coffee shop visit per week. It's less than most streaming subscriptions. And it's a fraction of what you'd pay for gym or spa sauna access.

Related Terms

• Kilowatt Ratings for Heaters
• Sauna Return on Investment
• Sauna Ownership vs. Spa Membership
• 240V Circuit for Saunas

Affordable to Own, Affordable to Run

Browse our outdoor saunas and indoor saunas and check the heater specs on each product page. We list kW ratings so you can calculate your exact operating cost before you buy.