Infrared vs Traditional Sauna: Heat, Cost and Health Differences

STOP choosing between infrared and traditional saunas based on health claims. The large Finnish studies behind most of those claims looked only at traditional saunas, and the real day-to-day differences are heat, wiring and cost.

Here is the short answer. A traditional sauna heats the air to 150F to 195F with an electric heater and hot stones, gives you steam, and usually needs a 240V circuit. An infrared sauna warms your body directly with panels, runs at 110F to 135F with no steam, and many 1 to 2 person cabins run on a dedicated 120V circuit. Pick traditional for heat, steam and research. Pick infrared for easy indoor installs and lower running costs.

Infrared vs traditional at a glance

Running costs use the EIA’s July 2026 average of 18.31 cents per kWh. Prices come from our product database, checked October 13, 2026.

How each one heats you

Traditional saunas use an electric (or wood) heater topped with stones. The heater warms the room air, and you ladle water on the stones to make a burst of steam. Cleveland Clinic puts traditional saunas at 150F to 195F with humidity usually under 20%. Harvard Health says dry sauna air can reach 185F, your skin hits about 104F within minutes, and your pulse rises by 30% or more.

Infrared saunas use carbon or ceramic panels that give off infrared light, which warms your body more than the air. Cleveland Clinic puts infrared sessions at 110F to 135F. Most budget cabins top out around 140F: Golden Designs says its Dynamic cabins run about 118F to 132F and “can heat up to 140F.” Some cabins go higher, like the Backyard Discovery Rylan (150F) and the outdoor Sun Home Luminar (170F).

Do infrared saunas feel as hot?

No. The air is far cooler, so there is no sting when you breathe in, and no steam. You still sweat, because the panels warm your skin directly. People who find a hot, humid sauna hard to breathe in often prefer infrared. People who grew up with gym or Finnish saunas often find infrared underwhelming.

Heat-up time

Traditional saunas need time to heat the room. Costco’s listing for the Almost Heaven-made Arcadia barrel says 165F to 180F in about 30 to 45 minutes. In freezing weather, retailer Sauna Marketplace describes a 6 kW barrel that would not pass about 150F.

Infrared makers often say you can start sooner because the panels warm you directly. That is fair once the panels are hot, but do not expect instant heat. Garage Gym Reviews found a Dynamic Andora cabin took about 40 minutes to reach 140F, per Peak Saunas, a competing brand that cites the result.

Our take: plan on 30 to 45 minutes of warm-up for either type. Wi-Fi controls, offered on many traditional heaters and some infrared cabins, matter more than the heat type for convenience.

Wiring and installation cost

This is the biggest practical difference, and it can add hundreds or thousands of dollars.

Traditional:

• 6 kW heaters run on a hardwired 240V 30A circuit; 8 kW heaters on 40A; the 9 kW heater in Costco’s Backyard Discovery Bennett on 50A.
• A few small rooms run on 120V. The Harvia Precut Sauna Room (36 x 48 in) uses a 2 kW heater at 120V 16.6A on a dedicated circuit, listed at around $3,566 by one retailer (confirm the current price).

Infrared:

• Most 1 to 2 person cabins need a dedicated 120V outlet: 15A for the Rylan 2-Person and Dynamic Gracia, 20A for the Clearlight Sanctuary 2 and Sunlighten Amplify II.
• Larger cabins step up to 240V. The Rylan 4-Person needs 240V 20A.

Install costs, from HomeGuide and Topture: an indoor 240V circuit runs about $250 to $900, an outdoor 240V run $1,500 to $3,800 or more, and an electrical permit $50 to $300. A dedicated 120V circuit is usually the cheaper job if your panel has room. For anything hardwired or on 240V, hire a licensed electrician and check with your local building department, because a permit may be needed. HUUM’s US manual says permits must be obtained before installation.

Running cost: power consumption compared

Here is the math, at the EIA’s July 2026 average of 18.31 cents per kWh. These are worst-case numbers with the heater at full draw the whole time.

Real traditional costs run lower, because the thermostat cycles the heater off once the room is hot. Even so, infrared costs about one fifth as much per session. Either way, a sauna costs less to run than most people expect. Plug in your own rate with the sauna running cost calculator.

Purchase price

Infrared cabins start lower, but the ranges overlap.

• Infrared, 1 to 2 person: about $1,800 (Costco Dynamic Gracia) to $8,000. Our database examples: Backyard Discovery Rylan 2-Person around $1,999, Sunlighten Amplify II around $5,799, Clearlight Sanctuary 2 around $7,299.
• Traditional, indoor: Almost Heaven’s indoor cabins list from about $4,200 to $9,600, heater included. The Serena 3-Person is around $4,725.
• Traditional, outdoor: barrels run about $3,000 (Costco Arcadia) to $10,000.

Installed, HomeGuide puts infrared saunas at $2,300 to $8,500, and Fixr puts electric traditional saunas at $3,000 to $5,000. Our home sauna cost guide breaks down every line item.

What the health research supports

This is where most comparison articles go wrong. Here is what the studies actually measured.

Traditional sauna research

The well-known studies come from one Finnish cohort of about 2,300 middle-aged men who used traditional saunas.

• A 2015 JAMA Internal Medicine study of 2,315 men followed for a median of 20.7 years found that men who used a sauna 4 to 7 times a week had lower rates of sudden cardiac death, fatal heart disease and death from any cause than once-a-week users. At 2 to 3 times a week, the difference in sudden cardiac death was not statistically significant.
• A 2017 study in Age and Ageing from the same cohort linked 4 to 7 sessions a week with lower dementia risk.
• A 2017 study in the American Journal of Hypertension linked 4 to 7 sessions a week with lower risk of developing high blood pressure.

These are associations in men in one country, not proof that sauna caused the difference. And they do not automatically apply to infrared saunas, which the studies did not measure.

Infrared sauna research

Infrared evidence is smaller and mostly clinical.

• A 2016 Japanese trial of 149 hospitalized heart failure patients found that supervised far infrared sessions (140F for 15 minutes, 5 days a week for 2 weeks) improved walking distance. It missed its main goal and lasted only 2 weeks. This was supervised hospital treatment, not home use.
• A 2009 review in Canadian Family Physician found limited evidence that far infrared may help blood pressure and heart failure, evidence against claims that it lowers cholesterol, and concluded that manufacturers’ claims of many health benefits are “poorly supported.”

Both types together

A 2018 systematic review of 40 studies on dry sauna, including both Finnish and infrared, found regular use “has potential health benefits,” but noted that only 3 of 13 randomized trials were at low risk of bias and that more data are needed. Cleveland Clinic says there is no clear evidence that dry or wet heat is better, and that sauna weight loss is water weight.

Our position: if research is your reason for buying, traditional has the stronger evidence base. If you will use an infrared sauna 4 or more times a week and would not use a traditional one, the infrared sauna is the better buy for you. Frequency is the factor the studies link to results.

The third option: hybrid saunas

Hybrids put infrared panels and a small traditional heater in one cabin. The Finnmark FD-4 Trinity, for example, pairs six full spectrum infrared heaters (1,750W) with a 1.9 kW Harvia Vega Compact heater with stones, on 120V, at around $7,795. Hybrids cost more and are a niche choice.

Check the model before you buy one used. The September 2026 CPSC Recall No. 26-784 covers about 41,580 Sauna360 infrared and hybrid infrared saunas and kits, sold under brands including Finnleo, Helo, Radiant Health and Tylo, because the infrared panels can short circuit and overheat.

Our picks for each type

Best traditional: Almost Heaven Serena 3-Person

For a basement, garage or large closet. It includes a Harvia 6 kW KIP heater on a 240V 30A circuit, uses red cedar or hemfir, and carries a limited lifetime cabin warranty. At around $4,725, it is one of the lowest-priced cabins in Almost Heaven’s indoor line. Outdoors, the Costco Almost Heaven Arcadia barrel is the value pick at around $3,000. See our Almost Heaven sauna review.

View at almostheaven.com for Almost Heaven Serena 3-Person Indoor Sauna (opens in a new tab)

Best infrared: Clearlight Sanctuary 2

Full spectrum heat (2,250W) on a 120V 20A plug, 52 x 48 x 77 in, and the strongest warranty we found: lifetime on the cabin, controls, wiring, heaters and audio for indoor residential use, plus 7 years of labor. Around $7,299 at an authorized dealer. Clearlight does not publish a max temperature. Read our Clearlight sauna review.

View at Heal With Heat for Clearlight Sanctuary 2 Full Spectrum (opens in a new tab)

Best budget infrared: Backyard Discovery Rylan 2-Person

Eight carbon panels (1,760W), rated to 150F, cedar walls, a dedicated 120V 15A circuit, and 5 years on every component including the cabin. Around $1,999 on sale. It also links a signed third-party EMF survey, which most brands do not. See best low EMF infrared saunas.

View at backyarddiscovery.com for Backyard Discovery Rylan 2-Person Indoor Infrared (SKU 2504455) (opens in a new tab)

Which should you choose

Choose infrared if:

• You want a sauna inside your home without running 240V
• You find hot, humid air hard to breathe
• You want the lowest running cost
• You plan to use it most days, and a gentler sauna makes that more likely

Choose traditional if:

• You want 150F to 195F heat and steam
• You want the type of sauna behind the Finnish studies
• You are putting it outdoors (most outdoor saunas are traditional)
• You are fine with a licensed electrician and a 240V circuit

Still deciding on the infrared side? Infrared Saunas Explained covers far, near and full spectrum heaters, and Full Spectrum vs Far Infrared Saunas covers whether the extra heaters are worth it. For traditional heaters, see best electric sauna heaters. For every type side by side, start with The Home Sauna Buyer’s Guide.

Safety

Both types put real stress on your heart and blood pressure. Harvard Health says saunas appear safe for most healthy adults, but blood pressure can rise in some people and fall in others. Talk to your doctor first if you have heart disease, high or low blood pressure, are pregnant, or take medication. Cleveland Clinic says to avoid saunas after a recent heart attack or stroke.

• Keep sessions to 15 to 20 minutes; beginners can start with 5.
• Never use a sauna alone or after drinking alcohol.
• Drink 2 to 4 glasses of water afterward and cool down gradually.
• If you add a cold plunge, cold water causes a gasp reflex and a spike in heart rate and blood pressure. Enter slowly and never plunge alone. See our cold plunge buyer’s guide.