Wood-Fired Sauna vs Infrared Sauna — What the Research Says and Why We Choose Wood Fire

Wood-Fired Sauna vs Infrared Sauna — What the Research Says and Why We Choose Wood Fire

Sauna is having a moment — and for good reason. People are discovering the benefits of heat exposure for recovery, stress reduction, circulation, and overall well-being. But one common question comes up often:

Is a traditional wood-fired sauna better than an infrared sauna — or are they the same?

They are not the same. They heat the body differently, feel different, and the scientific research behind them is not equal in depth. Both can be beneficial. But they offer different experiences and different physiological responses.

We’ll walk through what the research shows, where each type shines, where each has downsides — and why we personally choose wood-fired sauna.

How They Work — Different Heat, Different Experience

Traditional Wood-Fired Sauna

A wood-fired sauna heats the air and the stones, which then heat your body. Temperatures typically range from 160–200°F (70–95°C). You can keep it dry or pour water over hot stones to create steam — known as löyly — which raises humidity and intensifies perceived heat.

Heat comes in waves. You feel it on your skin, in your breath, and in the room itself.

Infrared Sauna

Infrared saunas use infrared emitters to heat the body more directly with lower ambient air temperatures, usually around 120–150°F (50–65°C). There are no hot stones and no steam. The heat feels steadier and milder to most people.

What the Strongest Scientific Evidence Supports

Important context:
Most long-term sauna health research has been done using traditional high-heat Finnish-style saunas — which are thermally similar to wood-fired sauna environments.

That matters when comparing evidence strength.

Cardiovascular & Longevity — Traditional Sauna Has the Deepest Evidence

The most cited long-term sauna study:

Laukkanen et al., 2015 — JAMA Internal Medicine

• Followed 2,315 Finnish men over ~20 years

• Found that higher sauna frequency was associated with:

  • Lower sudden cardiac death

  • Lower fatal heart disease

  • Lower cardiovascular mortality

  • Lower all-cause mortality

• Showed a dose-response effect — more sauna use correlated with greater benefit

This study used traditional high-temperature sauna bathing.

Vascular Function & Blood Pressure

Kihara et al., 2002 — Journal of the American College of Cardiology

Repeated sauna therapy improved:

• Endothelial function

• Cardiac performance

• Symptoms in chronic heart failure patients

Heat exposure produced measurable cardiovascular improvements.

Brain Health Associations

Laukkanen et al., 2016 — Age and Ageing

Frequent traditional sauna bathing was associated with a reduced risk of dementia and Alzheimer’s disease in long-term observational data.

What Infrared Sauna Research Shows

Infrared sauna research is newer and generally based on smaller clinical trials, but it does show benefits.

Heart Failure & Circulation Support

Tei et al., 1995 and follow-up Waon therapy studies (Japan)

Far-infrared sauna therapy showed:

• Improved cardiac output

• Reduced heart failure symptoms

• Improved vascular function

This protocol is sometimes called Waon therapy and is used clinically in Japan.

Chronic Pain & Joint Conditions

Masuda et al., 2005 — Clinical Rheumatology

Infrared sauna therapy reduced:

• Pain

• Joint stiffness

• Fatigue

In patients with rheumatoid arthritis and ankylosing spondylitis.

What This Means Practically

Traditional high-heat sauna:

• Strongest long-term population research

• Exercise-like cardiovascular stress response

• Higher heat load

• More thermoregulatory activation

Infrared sauna:

• Good clinical support for pain and heart failure therapy

• Lower heat tolerance required

• More comfortable for heat-sensitive users

• Smaller research base so far

Both can help people. The strength of evidence is simply deeper for traditional high-heat sauna.

Downsides of Each

Traditional / Wood-Fired Sauna — Limitations

• Very high heat can be uncomfortable for some

• Not ideal for people with unstable heart conditions without medical clearance

• Dehydration risk if not managed

• Requires heat-up time and fire tending

• Shorter rounds needed for many users

Infrared Sauna — Limitations

• Fewer long-term outcome studies

• Lower cardiovascular heat stress response

• No steam or humidity option

• Less adjustable heat character

• Many users report it feels more clinical than immersive

Why We Prefer Wood-Fired Sauna

Research matters — but so does experience.

We choose wood-fired sauna because of how it feels, how it sounds, and how it grounds people in the moment.

• The crackle of the fire

• The scent of heated wood

• The visible flame

• The ritual of tending the stove

• The option for dry heat or steam

• Pouring water on stones for deep, rolling löyly

• The way humidity changes the character of the heat

You can’t reproduce that with panels and emitters.

Wood-fired sauna is adjustable in real time — dry and sharp, or soft and steamy. It invites presence. It slows people down. It creates a shared ritual, not just a heat exposure session.

The Bottom Line

Infrared sauna has legitimate therapeutic uses and growing clinical support — especially for pain and heat-sensitive individuals.

Traditional high-heat sauna — including wood-fired — has the strongest long-term research base for cardiovascular and longevity associations.

And beyond physiology, wood-fired sauna offers something else:

Ritual. Atmosphere. Sensory depth. Tradition.

For us, that matters.