Infrared Sauna Benefits

The strongest infrared-specific evidence: Tei 2016

Most "sauna is good for you" data comes from traditional Finnish saunas. The exception — and the reason infrared has genuine credibility — is the Waon therapy research. Tei 2016 (sources) used repeated far-infrared sessions at roughly 140°F and found improvements in vascular function and heart-failure symptoms. That's a meaningful cardiovascular signal from infrared specifically, not an extrapolation borrowed from the hot-sauna literature. It's the single best reason to take infrared seriously rather than dismiss it as a low-heat novelty. None of this is medical advice.

The real selling point: benefits at a tolerable temperature

Infrared saunas run around 120–150°F, versus 175–195°F for a traditional Finnish sauna. The mechanism is the trick: infrared heats your body directly instead of super-heating the air, so you get a deep, sweaty, warming session at an ambient temperature many people can comfortably tolerate for 30–45 minutes. For anyone who finds a traditional sauna's blast-furnace heat genuinely unpleasant, that comfort gap is the whole game — because the session you'll actually repeat is the one that delivers results. Consistency beats intensity here.

Use the sauna calculator to set a session length that fits your temperature and tolerance, and how often should you use a sauna covers the weekly cadence the benefits anchor to.

The honest comparison: where traditional still wins

We won't pretend infrared has dethroned the Finnish sauna on evidence. The blockbuster long-term outcome data comes from hot traditional saunas: Laukkanen 2015 linked frequent use (4–7×/week) to lower all-cause mortality, and Laukkanen 2017 associated it with roughly 65% lower dementia risk — but those participants were sitting at 175–195°F. You can't assume a 130°F infrared session reproduces those exact outcomes; the heat dose is different.

So the honest framing is: infrared has the better tolerability and a solid cardiovascular study (Tei 2016); traditional has the bigger longevity dataset at higher heat. Neither is strictly superior. Our full side-by-side is in infrared vs traditional sauna, and if you're choosing between heat formats more broadly, infrared sauna vs steam room and sauna vs steam room cover the adjacent matchups.

Who infrared is actually for

Heat-sensitive people: if 190°F is unbearable, a tolerable 130°F session you'll repeat is the practical win.
Space- and budget-constrained buyers: infrared cabins (and sauna blankets) fit a closet or spare room and cost far less to run than a traditional heater.
Cardiovascular-curious users: Tei 2016's Waon protocol is the closest research match to a home infrared session.
Longevity-protocol purists: honestly, a hot traditional sauna is the closer match to the Laukkanen studies — pick accordingly.

Both heat and cold have a place in recovery; if you're weighing the two, sauna vs cold plunge lays out when each one earns its spot, and sauna benefits covers the broader (mostly traditional-sauna) evidence base.

Buying one without overpaying

Affiliate disclosure: we may earn a commission if you buy through links on this page, at no cost to you — never at the cost of an honest rec. How we make money.

Infrared's space and cost advantages only pay off if you buy something that actually heats evenly and holds temperature — that's how we sort the cabins and blankets in best home saunas, with the lower-cost, lower-commitment option broken out in best sauna blankets for people testing the habit before committing to a cabin. Before you buy, run the operating cost with the sauna cost calculator (infrared is usually cheaper to run than a traditional heater) and set your session length with the sauna calculator. Endurance athletes stacking heat for acclimation can cross-check training load on our sister site RunBikeCalc. None of this is medical advice.

Frequently asked questions

What are the proven benefits of an infrared sauna?

The best-supported infrared-specific evidence is cardiovascular: Tei 2016 used Waon therapy — repeated far-infrared sessions at roughly 140°F — and found improvements in vascular function and heart-failure symptoms. Beyond that, infrared delivers the same general perks people chase from any sauna (relaxation, a deep sweat, post-session calm) at a much lower air temperature, which is the real selling point for heat-sensitive people.

Is an infrared sauna better than a traditional sauna?

Not better — different. Traditional Finnish saunas have the larger long-term outcome dataset (Laukkanen 2015 linked frequent use to lower mortality; Laukkanen 2017 to lower dementia risk), but those studies were done at 175–195°F. Infrared runs around 120–150°F, which many people tolerate far longer. If the high heat of a traditional sauna keeps you from being consistent, the more-tolerable infrared session you actually do beats the hot one you skip.

How hot does an infrared sauna get?

Typically 120–150°F, versus 175–195°F for a traditional Finnish sauna. The trick is that infrared heats your body directly rather than super-heating the air, so it can feel deeply warming and produce a heavy sweat at a much lower ambient temperature. Tei 2016's Waon protocol centered on about 140°F.

Who is an infrared sauna best for?

People who find traditional sauna heat intolerable, those prioritizing a comfortable, consistent habit over maximal heat stress, and anyone short on space (infrared cabins and even sauna blankets fit a closet or spare room). If your goal is mimicking the high-heat protocols in the longevity studies specifically, a hot traditional sauna is the closer match. This isn't medical advice.