For a mid-range two-person unit used about four times a week at the national average electricity rate, the article's worked example comes to roughly $3 to $8 a month. Heavier use, a higher local rate, or a larger unit can push it higher, so check your utility rate and your sauna's wattage for your own number.
The short answer: most people see an extra $15 to $35 on their monthly electric bill. The exact number comes down to three things: your sauna's wattage, your local electricity rate, and how often you use it.
Let's break it down so you can estimate your own costs. This isn't just about budgeting — understanding the operational cost helps you decide if heat therapy fits your routine.
The Core Variables: Wattage, Rates, and Routine
Three things determine your cost. You control two of them.
- Sauna Wattage: This is the engine size. A typical home infrared sauna has several heaters, with total power consumption usually between 1,200 watts (small one-person unit) and 2,800 watts or more (larger model). Check the spec plate or manual for your sauna's exact wattage.
- Your Electricity Rate: This is the cost of fuel. Electricity is billed per kilowatt-hour (kWh). The US national average is about $0.16/kWh, but it varies — you might pay $0.10 in some states or over $0.30 in others. Your utility bill has your exact rate.
- Your Usage Pattern: This is how you drive it. Frequency and session length determine total consumption. A common health protocol is 3–4 sessions per week, each lasting 20–45 minutes, including warm-up.
Running the Numbers: A Real-World Example
Let's take a practical example. Say you have a mid-range, two-person infrared sauna drawing 1,800 watts (1.8 kW). You live in an area with the national average rate of $0.16/kWh. You commit to 4 sessions per week, each 30 minutes.
At first glance, you might calculate: 1.8 kW x 0.5 hours x 4 sessions = 3.6 kWh per week. Multiply by $0.16 and then by 4.33 weeks per month — that's about $2.50. That seems too low because it is. We forgot the warm-up.
Infrared saunas need to pre-heat, typically 10–20 minutes, before you get in. All heaters run at full power during that time. Let's add a 15-minute warm-up to each session.
- Total time per session: 0.5 hours (use) + 0.25 hours (warm-up) = 0.75 hours.
- Weekly energy use: 1.8 kW x 0.75 hours x 4 sessions = 5.4 kWh.
- Weekly cost: 5.4 kWh x $0.16 = $0.86.
- Monthly cost: $0.86 x 4.33 = $3.72 per month.
That figure — typically $3 to $8 per month for this usage — is your core operational cost. It's efficient, often comparable to running a space heater for a similar amount of time.
What Can Change Your Bill
The example is a baseline. Your actual cost can shift based on a few real-life factors.
- Longer or More Frequent Sessions: Daily 45-minute sessions will increase costs proportionally.
- Cold Ambient Temperatures: A sauna in an uninsulated garage in winter uses more energy to heat up than one in a climate-controlled room.
- Higher Wattage Sauna: A larger, more powerful model consumes more energy per hour.
- Peak vs. Off-Peak Rates: Some utilities charge more during peak afternoon hours. Running your sauna late at night or early morning could save money.
The Health Context: Cost Versus Value
From a men's health perspective, the electricity cost is a minor operational detail. The real investment is in the consistent habit.
Research on regular sauna use points to tangible benefits for cardiovascular function, nervous system relaxation, and post-exercise recovery. These come from your body's physiological response to heat — like activation of heat shock proteins and improved peripheral blood flow. You're funding a tool that supports your body's own maintenance systems. For less than the price of a few premium coffees each month, that's a compelling return on investment for your physical and mental wellness.
The key to getting value is consistent use. The electricity cost just keeps the lights on; you provide the commitment.
How to Get Your Personalized Estimate
- Find your sauna's wattage and convert it to kilowatts (divide by 1000).
- Find your electricity cost per kWh on your bill.
- Estimate your total weekly hours of use (always include warm-up time).
- Multiply: kW x Weekly Hours x Cost per kWh x 4.33.
The result gives you a clear, realistic picture of what it takes to power this part of your health routine.
Frequently asked questions
How much does it cost to run an infrared sauna per month?
A practical example using a 1,800-watt sauna at the US national average rate of $0.16 per kWh, run four times a week for 30 minutes plus a 15-minute warm-up, works out to around $3 to $8 a month. Your actual cost shifts based on your sauna's wattage, your local rate, and how long your sessions run. Checking your utility bill for your exact rate and your sauna's spec plate for its wattage gives you the most accurate estimate.
Do infrared saunas use a lot of electricity?
They're relatively efficient, often comparable to running a space heater for a similar amount of time. A typical home infrared sauna draws somewhere between 1,200 watts for a small one-person unit and 2,800 watts or more for a larger model. The total monthly draw is modest at average usage, which is part of why the running cost stays low.
Why is the warm-up period important when calculating infrared sauna running costs?
Infrared saunas need to pre-heat, typically 10 to 20 minutes, before you get in, and all heaters run at full power during that time. Leaving the warm-up out of your calculation makes the cost look much lower than it really is. Always include warm-up time when estimating your weekly energy use.
Can I lower my infrared sauna electricity bill?
Yes, a couple of practical factors can help. Some utilities charge more during peak afternoon hours, so running your sauna late at night or early in the morning could reduce your cost. Keeping the sauna in a climate-controlled room rather than an uninsulated garage also means it needs less energy to reach temperature, especially in winter.