Infrared vs Traditional Sauna: Which Is Right for You?

Short answer: if you want the heat experience backed by decades of cardiovascular research, get a traditional sauna. If you want a gentler session, a lower power bill, and an easier install, get infrared. Both can genuinely help you relax and sweat. They are not interchangeable products, and the marketing on both sides tends to blur that.

	Infrared	Traditional
How it heats	Infrared panels warm your body directly	A heater warms the air and rocks, which warm you
Cabin temperature	About 120-140F	About 150-195F
Warm-up time	10-15 minutes	30-45 minutes
Feel	Gentle, penetrating warmth, easier to breathe	Intense dry heat, sharp steam bursts if you add water to the rocks
Wiring and install	Usually plugs into a standard 120V outlet	Usually needs a dedicated 240V circuit from an electrician
Energy use	Roughly 1.2-2.0 kW, similar to a space heater	Higher draw, often on a 40-amp circuit
Typical cost	$200 for a blanket up to $6,000-$14,000 for a full cabin	$2,000 for a basic kit up to $15,000+ installed
Evidence base	Smaller studies, shorter follow-up, promising but thin	Large Finnish cohort studies with 20+ years of follow-up

How each one actually works

A traditional sauna heats the room. You’ve got a heater, usually electric, sometimes wood-fired, sitting under a pile of rocks. The heater warms the rocks, the rocks warm the air, and the air warms you. Cabin temperatures typically run 150F to 195F. Some people pour water on the rocks to create steam, called loyly in Finnish, which spikes the humidity for a few seconds and makes the heat feel sharper on your skin.

An infrared sauna skips heating the room. Panels built into the walls emit infrared light, which is absorbed directly by your skin and tissue, similar to how sunlight warms you even on a cold day. Because the air itself isn’t the thing doing the heating, the cabin only needs to reach about 120F to 140F for you to sweat heavily. That’s the core mechanical difference, and it explains almost everything else on this page: the lower power draw, the plug-in wiring, the shorter warm-up, and the gentler feel.

If you want the full rundown of models and what to look for before buying either type, check our sauna hub.

The experience

Traditional saunas hit you fast and hard. The air is dry and hot enough that many people cap sessions around 15-20 minutes. Add a scoop of water to the rocks and the steam burst raises the perceived heat even more. It’s an intense, almost ceremonial experience, and for a lot of people that intensity is the point.

Infrared sessions are milder. Because the air stays cooler, you can breathe easier and often stay in for 30-45 minutes without it feeling like punishment. There’s no loyly, no steam burst, no humidity spike. Some people find this relaxing in a way a 190F room never will be. Others miss the drama of it. Neither is wrong, it’s just a different kind of heat exposure.

What the research says

Here’s where we need to be precise, because a lot of sauna marketing blurs this line on purpose.

The long-term cardiovascular research everyone cites, including the well-known Laukkanen study published in JAMA Internal Medicine in 2015, was done on traditional Finnish saunas. That study followed 2,315 middle-aged Finnish men for a median of nearly 21 years and found that men who used a sauna 4 to 7 times a week had a 63 percent lower risk of sudden cardiac death and roughly 50 percent lower risk of fatal cardiovascular disease compared to men who used one only once a week. The saunas in that study ran at an average of about 79C, or 174F, dry heat with 10-20 percent humidity. The authors themselves noted their findings shouldn’t be assumed to apply to steam rooms, hot tubs, or other setups that run at lower temperatures.

That last point matters directly for infrared. Infrared research exists, but it’s a different body of evidence. Some studies, including trials using far-infrared Waon therapy in heart failure patients, have shown real benefits like reduced cardiac stress markers and better four-year survival rates. But those trials tend to be smaller, shorter, and often run on people who already have a diagnosed condition, not the general healthy population the Finnish cohort studies tracked for two decades. A published review of far-infrared sauna research described the evidence for cardiovascular risk factors as limited to moderate, not the kind of large-scale, long-follow-up data behind the traditional sauna numbers.

So the honest version is this: traditional sauna has the deep evidence. Infrared has promising but thinner evidence. If a retailer tells you infrared sauna use carries the same 20-year mortality data as traditional Finnish sauna use, that’s not accurate. The infrared research is real, it’s just not there yet.

Cost, install, and running it

Infrared saunas are the easier buy for most homes. Smaller cabins typically plug into a standard 120V, 15-20 amp outlet, the kind already in most garages and basements. Some larger or higher-output infrared units step up to a dedicated 20-30 amp circuit, and full-size multi-person models can require 240V like a traditional sauna, so check the spec sheet before you assume a simple plug-in job. Budget infrared options start low: a sauna blanket runs $200 to $600, a tent runs $450 to $800, and a full cabin runs roughly $3,400 to $14,000 depending on size and brand.

Traditional saunas usually mean an electrician visit. Most residential units need a dedicated 240V circuit, often on a 40-amp breaker, run from your panel to the sauna. That’s typically $300 to $1,500 in electrical work on top of the unit itself. A basic kit starts around $2,000, and a fully custom-built cedar sauna with a premium heater can run $7,000 to $15,000 or more, installed.

Running costs follow the same pattern. Infrared units draw somewhere around 1.2 to 2.0 kW, comparable to a space heater or hair dryer. Traditional saunas draw more power to heat a larger volume of air to a much higher temperature, so expect a bigger bump on your electric bill per session, especially with longer warm-up times.

Which one should you buy

If you have a heart-healthy reason for buying a sauna, like wanting the cardiovascular benefits backed by real long-term data, get a traditional sauna. That’s what the 20-year Finnish research is actually about, and using an infrared unit and expecting identical outcomes isn’t supported by the evidence yet.

If you’re renting, working with a small space, or just want a lower-hassle plug-in option, get infrared. The 120V install means you can likely set it up yourself, and the lower cabin temperature makes longer, more relaxed sessions realistic on a weeknight.

If you have any cardiovascular condition, are pregnant, or take medication that affects blood pressure or heart rate, talk to a doctor before buying either one. Heat stress affects the body regardless of how the heat is generated.

If you want budget flexibility and don’t mind a less premium feel, start with a portable infrared blanket or tent before committing to a full cabin either way. For a full walkthrough of models at every price point, see our best home saunas guide.