There is no single “best” sauna type. The right choice depends on what you’re looking for: how hot you want it, how long you want to sit, whether you prefer dry or humid heat, and your budget. The main types are traditional Finnish saunas, infrared saunas, and steam rooms, and each delivers heat to your body in a fundamentally different way, which changes the experience more than you might expect.
Traditional Finnish Saunas
A traditional Finnish sauna heats the air around you to somewhere between 150°F and 195°F using a stove, usually topped with rocks. You can pour water over the rocks to create bursts of steam, which temporarily raises the humidity and makes the heat feel more intense. This is the oldest and most studied type of sauna, and it’s the one behind most of the headline-grabbing cardiovascular research. A large Finnish study found that people who used a traditional sauna four to seven times per week had a significantly lower risk of cardiovascular disease compared to those who used one less frequently.
Sessions typically run 15 to 20 minutes for most people, with experienced users staying up to 30 minutes if well-hydrated. The high air temperature heats your skin quickly and drives up your core body temperature faster than other sauna types. If you enjoy the sensation of intense, enveloping heat with the option to control humidity, this is the classic choice. The tradeoff is cost: a permanently installed Finnish sauna with an electric or wood-burning heater is the most expensive option, often running several thousand dollars for a home setup.
Infrared Saunas
Infrared saunas use light panels that emit infrared radiation, which heats your body directly rather than heating the air around you. The air temperature stays much lower, typically between 120°F and 150°F, so the room itself feels milder. Many people who find traditional saunas uncomfortably hot prefer infrared for this reason. You still sweat heavily, your heart rate rises, and your blood vessels dilate, but the experience is gentler.
Because the air is cooler, sessions can run longer. Experienced users can comfortably stay up to 45 minutes. Daily use is considered safe for healthy adults. Infrared saunas are also cheaper to buy and operate than traditional Finnish models. They plug into a standard outlet, don’t need special ventilation, and come in portable or compact designs that fit in a bedroom corner. This makes them the most popular option for home use.
The main limitation is that infrared saunas have less long-term research behind them than traditional saunas. Most of the major cardiovascular and longevity studies were conducted on Finnish-style saunas. Smaller studies on infrared saunas show benefits for muscle recovery, pain relief, and relaxation, but the evidence base is thinner. That doesn’t mean they’re less effective for general health. It means the science hasn’t caught up yet.
Steam Rooms
Steam rooms operate at lower temperatures than dry saunas, usually around 110°F to 120°F, but the humidity is near 100%. The air is thick with moisture, which makes the heat feel heavy and penetrating even though the thermometer reads lower. Your body struggles to cool itself through sweat evaporation in that kind of humidity, so your core temperature rises quickly despite the milder numbers.
If you deal with sinus congestion, dry skin, or respiratory irritation, steam rooms have a practical edge. Breathing warm, humid air opens up nasal passages and can temporarily ease breathing. The moisture also feels better on skin compared to the drying effect of traditional saunas. On the downside, steam rooms are almost impossible to install at home without serious plumbing and waterproofing work. They’re primarily a gym or spa amenity. They also require more cleaning and maintenance because the constant moisture creates an environment where bacteria and mold thrive.
How the Heat Reaches You
The core difference between sauna types is the mechanism of heating, and this shapes the entire experience. Traditional saunas heat the air, which then heats your skin through convection. Infrared saunas bypass the air and use radiant energy to warm your tissues more directly, similar to how sunlight warms you on a cool day. Steam rooms use a combination of hot air and water vapor, with the moisture preventing your sweat from evaporating.
All three raise your core body temperature, increase heart rate, promote sweating, and trigger the relaxation response that most people are chasing. The cardiovascular effect of a sauna session is sometimes compared to moderate exercise: your heart rate can climb to 100 to 150 beats per minute, and blood flow increases substantially. These effects are not exclusive to one sauna type.
Choosing Based on Your Goals
If your priority is cardiovascular health and you want the option backed by the most research, a traditional Finnish sauna has the strongest evidence. The studies linking frequent sauna use to reduced heart disease risk and lower all-cause mortality were conducted with this type.
If you want a more comfortable, lower-temperature experience that you can install at home without a major renovation, infrared is the practical winner. It’s easier on people who are heat-sensitive, and the longer session times work well for people who use sauna time as a meditation or wind-down routine.
If you’re primarily looking for respiratory relief or skin hydration, a steam room is the better fit, though access is usually limited to gyms and spas. For people with very dry or sensitive skin, the low-humidity environment of a traditional or infrared sauna can actually feel irritating over time.
What Matters More Than Type
Consistency matters more than which sauna you pick. The health benefits seen in research are tied to regular use, not occasional sessions. People who used a sauna four or more times per week saw the clearest cardiovascular benefits. A sauna you’ll actually use three to five times a week will do more for you than the “perfect” sauna you use once a month.
Hydration is the other non-negotiable. You can lose a pint or more of sweat in a single session, and dehydration blunts the benefits and increases the risk of dizziness or fainting. Drinking water before, during, and after is essential regardless of sauna type. Alcohol and sauna don’t mix well either, as alcohol accelerates dehydration and impairs your body’s ability to regulate temperature.
For most healthy adults, daily sauna use is considered safe across all types. Start with shorter sessions of 10 to 15 minutes and work up as your body adapts. If you have a heart condition or blood pressure issues, talk with your doctor before starting regular use, as the cardiovascular demands are real even though you’re sitting still.