Traditional Finnish Saunas vs. Infrared Saunas: Understanding the Classic Heat Experience

While infrared therapy has gained popularity in recent years, traditional Finnish saunas remain the global benchmark for heat therapy. Operating at much higher temperatures with intense humidity control, the classic sauna experience offers distinct physiological and lifestyle benefits.

If you are considering adding a traditional sauna to your home, here is everything you need to know about how they work, their core benefits, and how they compare to modern alternatives.

How Traditional Saunas Work: Ambient Heat & “Löyly”

Unlike infrared saunas that use light waves to warm your body directly, traditional saunas heat the ambient air inside a wood-lined room using electric or wood-burning heaters packed with sauna stones.

[ Heater / Hot Stones ] ───> Heats Ambient Air (150°F–195°F) ───> Body Sweats & Relaxes
          │
  (Pour Water)
          ▼
[ Steam / "Löyly" ] ────> Sudden Humidity Spike ──────────────> Intensifies Thermal Sensation

When water is splashed onto the superheated stones, it creates a sudden burst of hot steam known in Finland as löyly. This humidity spike momentarily raises the perceived temperature, encouraging rapid sweating and deep breathing.

Key Differences: Traditional vs. Infrared Saunas

Feature	Traditional Sauna	Infrared Sauna
Operating Temperature	High: 150°F – 195°F (65°C – 90°C)	Moderate: 110°F – 140°F (43°C – 60°C)
Humidity Level	Adjustable via steam (10% – 30%+)	Dry heat (0% humidity)
Warm-Up Time	45 – 60 minutes	15 – 25 minutes
Heat Source	Electric stove or wood-burning heater	Carbon or ceramic infrared panels
Social Environment	Benches allow easy movement & talking	Typically solo or static seating

Top Health Benefits of Traditional Saunas

1. Superior Cardiovascular Workout

The high heat of a traditional sauna causes your heart rate to jump to 100–150 beats per minute—mimicking the cardiovascular stress of moderate-intensity exercise. Regular use improves vascular compliance and blood flow.

2. Deep Respiratory Cleansing

The steam produced by pouring water over heated rocks opens up airways, thins mucus, and relaxes bronchial passages. This makes traditional saunas particularly beneficial for clearing congestion after workouts or during cold weather.

3. Authentic Social and Relaxation Ritual

Traditional saunas feature multi-tiered wooden benches that accommodate larger groups. Moving between high-heat upper benches and cooler lower benches creates an interactive, communal wellness ritual.

3 Essential Tips for Traditional Sauna Owners

1. Invest in Proper Ventilation: Traditional saunas require dedicated fresh air intake and exhaust vents to ensure oxygen levels remain comfortable during high-steam sessions.
2. Use Clean Water for Steam: Always use clean, filtered water on your sauna rocks to prevent mineral buildup and preserve the heating elements.
3. Allow Extra Warm-Up Time: Pre-heat your unit for at least 45 minutes before stepping in to allow the thermal mass of the wood walls and rocks to fully saturate with heat.