Infrared vs. Traditional Sauna: Which Is Right for You?
Both traditional and infrared saunas deliver heat therapy — but they work differently, feel different, and are better suited to different goals and spaces. Understanding the distinction helps you make an informed decision rather than simply choosing by aesthetics or price.
How Each Type Works
Traditional Finnish sauna heats the air in an enclosed room using a wood-burning or electric stove topped with rocks (kiuas). The rocks store and radiate heat; pouring water over them (löyly) creates steam that raises humidity and intensifies the perceived heat. Air temperatures typically range from 80–100°C (176–212°F), with humidity variable depending on how much steam is added.
Infrared sauna uses infrared heaters — emitting far-infrared wavelengths (typically 5–15 microns) — that directly warm objects and bodies in the room rather than heating the air first. Cabin temperatures run much lower, typically 50–65°C (122–149°F), while the perceived warmth can feel similar to a traditional sauna because the heat is absorbed directly into tissue.
Side-by-Side Comparison
| Traditional Finnish | Infrared | |
|---|---|---|
| Air temperature | 80–100°C (176–212°F) | 50–65°C (122–149°F) |
| Heat mechanism | Heats air, then body | Heats body directly via infrared radiation |
| Humidity | Variable — dry to steamy (löyly) | Low — typically dry |
| Preheat time | 30–60 minutes | 10–15 minutes |
| Session length | 10–20 minutes per round | 20–45 minutes |
| Power requirements | 220V dedicated circuit (electric); wood-burning requires ventilation | 110V or 220V depending on size |
| Outdoor use | Excellent — traditional outdoor installation | Indoor primarily (some outdoor models available) |
| Research base | Extensive — decades of Finnish population studies | Growing — smaller body of evidence, mostly cardiovascular and detox |
| Aesthetic | Classic cedar or spruce; barrel and cabin styles | Modern panel construction; glass front options |
The Research Distinction
It is important to note that the landmark cardiovascular and longevity research — including the 20-year KIHD study — was conducted using traditional Finnish saunas, not infrared.¹ This does not mean infrared saunas lack benefit, but the evidence base for traditional sauna is more extensive and the findings more conclusive. Infrared sauna research shows promising results for cardiovascular risk factors² and is generally well-tolerated, but the long-term population data does not yet exist at the same scale.
Which Should You Choose?
Choose traditional Finnish if:
- You want the modality with the strongest long-term research behind it
- You enjoy the ritual of steam and a high-heat, immersive experience
- You are planning an outdoor installation (barrel or cabin sauna)
- Contrast therapy with cold plunge is part of your protocol
- You want the authentic Scandinavian sauna experience
Choose infrared if:
- You prefer lower air temperatures and longer, more relaxed sessions
- You have electrical limitations that make a 220V heater impractical
- You want faster preheat times for daily use convenience
- Indoor installation in a smaller footprint is required
Not sure which sauna type fits your space and goals?
Our Wellness Concierge walks you through the decision — space requirements, power, installation, and which type best matches your recovery protocol.
Begin Your Assessment →References
- Laukkanen JA, et al. "Association between sauna bathing and fatal cardiovascular and all-cause mortality events." JAMA Internal Medicine. 2015;175(4):542–548. doi:10.1001/jamainternmed.2014.8187
- Beever R. "Far-infrared saunas for treatment of cardiovascular risk factors: summary of published evidence." Canadian Family Physician. 2009;55(7):691–696.