How Much Electricity Does a Sauna Use? A Complete Cost Analysis for 2025

The upfront cost of buying a sauna is one of the first things to cross your mind when dreaming about installing one in your home, but what about the long-term expenses? That peaceful, steamy retreat sounds heavenly until you start wondering if your electric bill will spike everytime you turn it on. 

Truth is, understanding sauna electricity usage doesn’t have to be complicated. Whether you’re eyeing a traditional sauna with its authentic dry heat environments or considering an infrared model with its direct application of heat, knowing what to expect can help you make a smart choice that won’t shock you when the bill arrives, so you can stay relaxed and worry-free. 

In this article, we’ll cover:

• The actual kilowatt-hour usage of different types of saunas (and what that means for your wallet)
• Simple ways to reduce your sauna’s energy consumption without sacrificing the experience
• How to calculate your potential electricity costs before making a purchase decision

Ready to sweat the details without sweating the costs? Let’s get into the facts about sauna power consumption and find the perfect balance between energy efficiency and that blissful detox you’re craving!

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2. 1Understanding Different Types of Saunas and Their Energy Consumption

Understanding Different Types of Saunas and Their Energy Consumption

The type of sauna you choose significantly impacts how much you’ll pay to run it. Understanding the technical difference between a dry vs wet sauna can help you manage your energy usage expectations.

Traditional Electric Saunas – Power Requirements and Usage

Traditional saunas—those steamy Finnish-style spaces we all love—typically use electric heaters that pack a pretty substantial power punch. Most home models use electric sauna heaters ranging from 6 to 9 kilowatts (kW).

Here’s what that means in practical terms: A 6kW electric sauna heater uses about as much electricity as six vacuum cleaners running simultaneously. Seems like a lot, right? But remember, your sauna doesn’t run constantly at full power output.

A traditional sauna needs about 30-45 minutes to heat up initially. During this warm-up phase, the heater works hardest, drawing its full rated power. Once it reaches optimal temperatures (typically 160-200°F), the heater cycles on and off to maintain that toasty environment, using roughly half its power rating.

For context, our Finnleo saunas feature highly efficient traditional models with quality wood construction that balance performance with reasonable energy usage.

Infrared Saunas – The Energy-Efficient Alternative

If electricity costs keep you up at night, infrared saunas might help you sleep better. These modern alternatives use a completely different heating method—directly applying heat waves to your body instead of heating the air around you.

The energy savings are significant. While traditional saunas commonly use 6kW electric heaters, most infrared models operate with just 1.5-2.5kW heaters. That’s roughly 60-75% less electricity usage!

Infrared saunas also reach usable temperatures much faster (typically 10-15 minutes) and operate at milder temperature levels (120-140°F). Less heat-up time plus lower operating temperatures equals smaller electricity bills.

Another bonus? Since infrared saunas don’t need to generate as much heat, they’re less likely to experience heat loss to the surrounding environment, making them even more efficient for the energy-conscious sauna owner.

Portable Saunas – Compact Solutions with Lower Power Needs

Don’t have space for a full-sized sauna? Portable options might be perfect—and they’re also the most energy-friendly.

Most portable saunas operate between 1000-1500 watts (1-1.5kW), similar to running a hair dryer or microwave. Their small size means they heat quickly and maintain temperature efficiently.

The typical portable infrared sauna uses about as much electricity as a standard coffee maker. 

Breaking Down the Numbers: Calculating Sauna Electricity Costs

Let’s get down to dollars and cents. How much will your sauna actually add to your monthly electricity bill? If you’re wondering specifically how much does a sauna cost to run beyond just electricity, factors like maintenance and accessories also play a role.

Wattage Ratings and What They Mean

Every sauna heater has a wattage rating that tells you how much electricity it consumes at full power. For example:

• Traditional electric sauna heaters: 6-9kW (6000-9000 watts)
• Infrared sauna heaters: 1.5-2.5kW (1500-2500 watts)
• Portable sauna heaters: 1-1.5kW (1000-1500 watts)

But remember—just like your home heating system, sauna heaters don’t run at full power constantly. After reaching the proper temperature, they cycle on and off to maintain it.

Formula for Estimating Monthly Electricity Usage

Here’s a simple formula to calculate your sauna’s electricity cost:

Monthly Cost = Heater Power (kW) × Hours Used Per Month × Price per kilowatt-hour ($/kWh)

For example, if you have:

• A 6kW traditional electric sauna heater
• Used three times weekly for 1 hour (about 12 hours monthly)
• Electricity costs of $0.13 per kilowatt hour (the U.S. average)

Your calculation would look like:

6kW × 12 hours × $0.13 = $9.36 per month

But wait! That’s assuming constant full power. In reality, the heater only runs at full power during warm-up (about 45 minutes) and then cycles at roughly half power. So a more accurate calculation would be:

[(6kW × 0.75 hour × 12) + (3kW × 0.25 hour × 12)] × $0.13 = $8.19 per month

Real-World Cost Examples Based on Average Usage

Let’s compare the monthly costs for different types of saunas, assuming three 1-hour sessions weekly and $0.13 per kilowatt hour:

Sauna Type	Heater Power	Warm-up Times	Monthly Usage	Monthly Price
Traditional electric sauna	6kW	45 min	12 hours	$8-$10
Infrared sauna	1.8kW	15 min	12 hours	$2.50-$3.50
Portable sauna	1.2kW	10 min	12 hours	$1.50-$2.50

As you can see, even a traditional sauna costs less to operate than many people expect—about the same as running a window air conditioner. Infrared models cost roughly the same as keeping a few light bulbs on.

Factors That Affect Your Sauna’s Energy Consumption

The numbers above are averages, and your actual electricity usage will vary based on several factors. Understanding these sauna operating costs factors can help you make adjustments to improve efficiency.

Sauna Size and Volume Considerations

It’s simple physics—larger spaces need more energy to heat. A 4-person sauna requires a more powerful heat source than a 2-person model.

For traditional electric saunas, the general rule is:

• 2-person sauna: 4-6kW heater
• 4-person sauna: 6-8kW heater
• 6-person sauna: 8-10.5kW heater

Size matters less for infrared saunas since they apply heat directly to your body rather than the entire air volume. However, larger infrared saunas still require more heating elements, leading to somewhat higher power consumption.

Insulation Quality and Its Impact on Efficiency

Think of insulation as a thermos for your sauna—proper insulation means less energy needed to maintain temperature.

Premium saunas use top-quality woods (like Western Red Cedar or Nordic White Spruce) with excellent thermal properties, plus proper insulation in walls and ceilings. Budget models often skimp here, resulting in lower upfront costs but higher long-term electricity costs due to heat loss.

The best-insulated saunas can be up to 30% more energy-efficient than poorly insulated ones. If you’re concerned about energy usage, investing in quality wood construction pays dividends over time.

Heating Time and Temperature Settings

How hot you like it and the duration of your sauna sessions dramatically impact energy consumption.

For traditional saunas:

• Every 10°F increase in temperatures requires roughly 5-10% more energy to maintain
• Preheating accounts for 60-70% of total electricity used in a typical session

Many sauna enthusiasts don’t realize they can save significantly by:

• Setting the temperatures to 170-180°F instead of 190-200°F (still plenty hot!)
• Using the sauna immediately after it reaches the proper temperature
• Reducing preheating times by scheduling sessions back-to-back

Comparing the Cost: Traditional vs. Infrared Saunas

The traditional vs infrared sauna differences include health benefits and user experience too, but let’s take a closer look at how these two popular types of saunas stack up in terms of electricity usage. 

Initial Heating Energy Requirements

This is where the biggest difference lies. Traditional saunas require substantial energy to heat all that air:

• Traditional sauna: 30-45 minutes at full power (6-9kW)
• Infrared sauna: 10-15 minutes at full power (1.5-2.5kW)

That initial warm-up for a traditional sauna might use 3-7 kilowatt hours of electricity, while an infrared model might use just 0.25-0.5 kilowatt hours. That’s a dramatic difference in energy usage!

Maintaining Temperature – Ongoing Energy Needs

Once heated, traditional electric saunas cycle their heaters on and off, typically running about 40-50% of the time to maintain optimal temperatures. Meanwhile, infrared panels may run 60-70% of the time but at much lower wattage.

For a 30-minute session (after warm-up):

• Traditional sauna: Approximately 1.5-2.5 kilowatt hours
• Infrared sauna: Approximately 0.5-0.8 kilowatt hours

Long-Term Cost Comparison

Infrared saunas clearly win the energy efficiency contest, using roughly one-third the electricity of traditional models. Over a year of regular use, that difference adds up:

• Traditional sauna (used 3x weekly): $95-$130 annual electricity cost
• Infrared sauna (used 3x weekly): $30-$45 annual electricity cost

However, traditional electric saunas offer that authentic Finnish experience with dry heat environments many purists prefer. Ultimately, the choice depends on what experience you value most—and whether the roughly $70-$90 annual savings is worth the different sauna experience.

Energy-Saving Tips for Sauna Owners

Regardless of which type of sauna you choose, these practical tips can help reduce your electricity costs.

Optimal Timing and Usage Patterns

How and when you use your sauna significantly impacts energy consumption:

1. Schedule back-to-back sessions: If multiple family members use the sauna, do so consecutively while it’s already heated to proper temperatures
2. Use timers wisely: Program your electric sauna heater to start heating 30-45 minutes before you plan to use it
3. Avoid opening the door: Each time you open the door, valuable heat escapes, increasing heat loss
4. Off-peak electricity: If your utility offers time-of-use rates, schedule sauna sessions during times when the price of electricity is lower

A timer is your secret weapon for efficiency. Many modern electric saunas include programmable timers that let you schedule exactly when heating begins, eliminating wasted energy.

Maintenance Practices for Better Efficiency

A well-maintained sauna uses less electricity:

1. Check door seals regularly: Replace weatherstripping if you notice gaps that cause heat loss
2. Clean heater elements: Dust and debris can reduce heating efficiency
3. Reorganize stones periodically: For traditional saunas, proper stone arrangement improves effective heat distribution
4. Inspect electrical connections: Loose connections can cause heaters to work harder

Regular maintenance not only saves energy but also extends your sauna’s lifespan—a win-win for any sauna owner!

Strategic Placement and Installation Considerations

If you’re still in the planning stages, consider these efficiency boosters:

1. Install on interior walls: Placing your sauna against exterior walls increases heat loss
2. Add extra insulation: Consider additional insulation around the sauna room for both indoor saunas and outdoor saunas
3. Choose proper sizing: A sauna that’s too large for your needs wastes electricity
4. Consider ceiling height: Heat rises, so lower ceilings improve efficiency

These considerations matter more for traditional saunas than infrared models, but every bit helps reduce your energy usage.

Is a Sauna Worth the Added Electricity Cost?

Let’s be honest—a sauna is a luxury. But is it a justified expense when considering the electricity costs?

Health Benefits vs. Energy Expenses

Regular sauna use has been linked to numerous health benefits:

Improved Circulation

Regular sauna use promotes vasodilation, which enhances blood flow and oxygen delivery throughout the body. This increased circulation can aid in muscle recovery, reduce inflammation, and improve overall cardiovascular health.

Stress Reduction

The heat from a sauna session triggers the release of endorphins, the body’s natural mood enhancers, leading to reduced stress and a sense of well-being. The calming environment of a sauna also encourages mindfulness and relaxation, further alleviating stress.

Muscle Relaxation

Exposure to sauna heat helps relax muscles and alleviate tension, which can be particularly beneficial after intense physical activity. This relaxation can reduce muscle soreness and improve flexibility.

Enhanced Recovery After Exercise

The increased blood flow from sauna use aids in the delivery of oxygen and nutrients to muscles, promoting faster recovery and reducing muscle stiffness. This makes saunas an effective tool for post-exercise recovery.

Better Sleep Quality

Utilizing a sauna before bedtime can improve sleep quality by promoting relaxation and reducing stress. The cooling of the body after a sauna session can signal to the body that it’s time to sleep, leading to deeper and more restful sleep.

Cost-Effective Wellness

The monthly electricity cost of using a traditional electric sauna is approximately $8–$10, which is less than the cost of a single massage session or spa visit. This makes regular sauna use an affordable option for health and well-being.

Complementary Cold Plunge Therapy

Many individuals incorporate cold plunges into their wellness therapy, which involve immersing the body in cold water to reduce inflammation and accelerate recovery, along with other health benefits. Alternating between sauna and cold plunge therapies can further improve circulation, boost the immune system, and enhance mental resilience.

Comparing Sauna Usage to Other Home Appliances

To put sauna electricity usage in perspective, let’s compare it with common household appliances:

Appliance	Typical Wattage	Cost for 1 Hour Use (at $0.13 per kilowatt)
Traditional Electric Sauna	6000W	$0.78
Clothes Dryer	4000W	$0.52
Electric Oven	2500W	$0.33
Dishwasher	1800W	$0.23
Infrared Sauna	1800W	$0.23
Refrigerator (24hrs)	150W	$0.47
LED TV	100W	$0.01

Surprised? A traditional sauna costs less per hour than running a large air conditioner. An infrared sauna costs about the same as running a dishwasher.

Return on Investment – Home Value and Wellness Benefits

Beyond the direct benefits of an at-home sauna, there are some hidden perks that are important to consider:

1. Home value enhancement: Saunas can increase property value, particularly in luxury homes
2. Reduced external wellness expenses: When you have a spa-level luxury at home, there’s less need for massage therapy or frequent salon visits
3. Potential healthcare savings: Some studies suggest regular sauna health benefits may reduce certain health risks

Many sauna owners report that the wellness benefits far outweigh the modest electricity costs—making it a worthwhile investment in both property value and personal health.

Choosing an Energy-Efficient Sauna for Your Home

If you’re convinced a sauna is right for you, here’s how to select one that won’t drain your wallet through excessive energy usage. Understanding the home sauna cost for both purchase and operation will help you make an informed decision.

Key Features to Look for When Purchasing

Energy-efficient saunas typically offer:

1. Quality wood and proper insulation: Double-wall construction with proper vapor barriers to minimize heat loss
2. Efficient electric sauna heaters: Look for models with rapid heating and good temperature regulation
3. Digital controls: Precise temperature management reduces wasted energy
4. Timers and scheduling: Programmable features prevent unnecessary operation
5. Quick-heating elements: Less time spent warming up equals lower energy consumption

Our Finnleo sauna collection features models with excellent energy efficiency ratings and solid wood construction that minimizes heat loss.

Understanding Energy Ratings and Certifications

While saunas don’t have Energy Star ratings like appliances, you can look for:

• UL Certification: Ensures electrical safety and some efficiency standards
• CEC Compliance: California Energy Commission standards for efficiency
• ISO 9001: Quality management systems that often result in better efficiency
• Manufacturer efficiency claims: Compare wattage ratings and heating times

Always ask manufacturers for specific data about electricity usage rather than relying solely on marketing materials.

Best Sauna Options for Energy-Conscious Consumers

If minimizing electricity usage is your priority, consider:

1. Infrared saunas: Use 60-75% less electricity than traditional models
2. 2-person models: Smaller saunas heat faster and use less energy
3. High-end insulation: Premium models with proper insulation often recover their higher upfront cost through energy savings
4. Smart controls: Models with learning algorithms can optimize heating cycles

Some of our most energy-efficient options include the Finnleo S-Series infrared saunas and the Sisu series of traditional electric saunas, both offering excellent wood construction and heating efficiency. 

Before making a decision, be sure to research the home sauna cost to find the right balance between your budget and desired features.

Troubleshooting High Energy Consumption Issues

If your sauna seems to be using excessive electricity, check:

1. Door seals: Poor sealing allows heat to escape, forcing the electric sauna heater to work harder
2. Insulation issues: Deteriorating insulation dramatically increases energy usage
3. Thermostat accuracy: Malfunctioning thermostats may cause overheating
4. Electrical connections: Loose connections create resistance that wastes energy
5. Ventilation settings: Excessive ventilation removes heat that must be replaced

A properly functioning sauna should maintain temperatures with periodic heater cycling. If your heater runs constantly, something’s likely wrong—contact a professional for evaluation.

Frequently Asked Questions About Sauna Electricity Usage: Common Concerns About Operating Costs

Will my sauna drastically increase my electric bill?

Not as much as most people fear. A traditional electric sauna used three times weekly typically adds $8-$10 monthly to your electricity bill. Infrared saunas add just $2.50-$3.50 monthly with similar usage patterns.

Does a sauna use more electricity than my air conditioner?

On an hourly basis, a traditional sauna uses slightly more electricity than a central air conditioner, while an infrared sauna uses less. However, most people run their AC many more hours than their sauna, making the AC’s total consumption much higher.

Is it cheaper to heat a sauna with gas instead of electricity?

Gas heaters can be cheaper to operate in areas with high electricity costs, potentially saving 20-30% on operating expenses. However, they require proper ventilation and professional installation, increasing upfront costs.

Do outdoor saunas use more electricity than indoor saunas?

Yes, outdoor saunas typically use 15-25% more electricity due to greater heat loss, especially in cold climates. Proper insulation is particularly important for outdoor saunas to maintain optimal temperatures efficiently.

How can I determine the actual electricity usage of my existing sauna?

The most accurate method is using a plug-in electricity usage monitor for portable models, or tracking your electric meter before and after sauna sessions for hardwired units.

Making an Informed Decision About Your Sauna Purchase

The bottom line? Saunas use less electricity than many prospective owners fear. Even traditional models typically add just $8-$10 to monthly utility bills with regular use. Infrared models are even more budget-friendly at $2.50-$3.50 monthly.

Ready to explore your sauna options without worrying about skyrocketing electric bills? Check out our full selection of saunas and discover how affordable that regular sauna experience can be.

Contact our team at Epic Hot Tubs for personalized recommendations based on your space, preferences, and energy considerations. We can help you compare the sauna vs hot tub health benefits to find the perfect wellness solution for your home.