Saunas for Firefighters and Fire Stations: What They Can and Can't Do

Fire station wellness guide

A sauna for firefighters can be a recovery and wellness amenity: a heated cabin on the clean side of the station that members use during downtime, under department policy. It is not decontamination, rehab, medical care or a cancer-prevention measure. This guide for chiefs and wellness coordinators covers the evidence, timing, policy, placement, equipment and funding.

The hazards behind firefighter wellness programs

In 2022 IARC, the World Health Organization's cancer agency, classified occupational exposure as a firefighter as "carcinogenic to humans (Group 1)", with sufficient evidence for mesothelioma and bladder cancer and limited evidence for five other cancers. IARC notes that the classification reflects "the strength of the evidence", not the level of risk. A NIOSH study of nearly 30,000 career firefighters in Chicago, Philadelphia and San Francisco, employed between 1950 and 2009, found "a modest increase in cancer diagnoses (9% increase) and cancer-related deaths (14% increase)" compared with U.S. population rates (Daniels et al., 2014).

The U.S. Fire Administration counted 72 on-duty firefighter deaths in 2024; 42 of them (58%) were due to stress or overexertion, including 41 cardiovascular events. None of these sources evaluates saunas, and nothing here suggests a sauna changes these risks. These hazards explain why decontamination and rehab come first and why a station sauna policy needs medical input.

What a sauna does not do

You may hear that firefighters can "sweat out" what they absorbed at a fire. We found no study showing that sauna use removes fireground contaminants or lowers cancer risk. The responder studies we found are small and uncontrolled: a 2007 pilot of an unspecified "detoxification method" in seven World Trade Center responders, five of them FDNY employees, with no comparison group described and a published critique (Dahlgren et al.); and a 2012 chart review of 69 police officers on a sauna, exercise and nutrition program, which its authors call "uncontrolled" and whose abstract reports no chemical measurements (Ross and Sternquist).

Broader sweat research is no stronger. In a small 2022 study of 12 students, sauna-cabinet sweat had lower concentrations of nickel, lead, copper and arsenic than exercise sweat (Kuan et al.). The NIH's complementary-health center calls detox-program studies "of low quality", and Cleveland Clinic says there is "not enough scientific evidence to prove" that sweating, including in a sauna, "purifies your body". Our infrared sauna detox guide has the details.

On skin temperature, laboratory studies show some chemicals pass through skin faster when it is warmer (Kilo et al., 2020; Akomeah et al., 2004). Neither involved soot, firefighters or saunas, and no study we found tested sauna heat with contaminants on skin, but the finding is one more reason to keep the fire-service order: clean skin first. We could not trace the per-degree absorption figure sometimes quoted to a measurement, so we omit it.

Decontamination comes first

On firefighter decontamination, the Lavender Ribbon Report (2018), from the International Association of Fire Chiefs' Volunteer and Combination Officers Section and the National Volunteer Fire Council, includes these best practices.

An IAFF and Firefighter Cancer Support Network fact sheet agrees: "Personnel should shower within an hour of returning to quarters or as soon as practical." In a 2017 study of controlled residential fires (Fent et al.), on-scene soap-and-water decontamination cut PAHs, a group of combustion chemicals, on turnout jackets by a median of 85%, and wipes cut PAHs on neck skin by a median of 54%. NFPA 1585, NFPA's exposure and contamination control standard (2025 edition), took effect in May 2024; we have not read its text, so we cite no requirement from it.

Rehab and timing

Rehab is the fire service's answer to heat strain: the U.S. Fire Administration's FA-314 (2008) describes "providing rest, rehydration, nourishment, and medical evaluation" after extended or extreme operations. Since 2025 NFPA's rehab standard has been part of NFPA 1580 (per NIOSH), whose scope covers "prehabilitation, contamination control, rehabilitation, and recovery" (ANSI).

In a NIOSH-funded study of 21 male firefighters, core temperature kept rising for about 7 minutes after live-fire training ended and took at least 50 minutes to return to baseline; systolic blood pressure stayed lower for at least two hours (Horn et al., 2011). The authors caution about low blood pressure and call the recovery timeline "significantly longer than the typical 10–20-minute rehabilitation period".

A sauna session adds its own heat load. In a 2026 study, 45 minutes of far-infrared heat at 149°F (65°C) raised 12 healthy adults' heart rate from 74 to 153 beats per minute and contracted plasma volume by 11.6% (Jenkins et al.; Clearlight supplied the sauna and, the authors state, had no role in the study). A 2001 review in The American Journal of Medicine describes sauna bathing's "acute, transient cardiovascular and hormonal changes", though most healthy adults tolerate it well.

We found no study of sauna use after firefighting, so we know of no validated waiting time. Our reading of the guidance is an order of operations: gross decontamination and rehab on scene, including any required medical evaluation, then a shower back at quarters, and only later a session for members who are clean, rehabbed and cleared. How much later is for the department's occupational medical program to decide.

Writing a station sauna policy

Draft a policy with your health and safety officer and occupational medical provider. It should settle:

Where the sauna goes in the station

Fire-service guidance keeps the apparatus floor and living space apart: the Lavender Ribbon Report houses gear "in the apparatus bay or PPE storage area", and a 2013 Firefighter Cancer Support Network white paper calls for "clear separation of living quarters from the apparatus floor". Neither mentions saunas. Following that guidance, we recommend siting a firehouse sauna on the clean side of that divide, such as the fitness room, and keeping it well apart from apparatus, their diesel exhaust and stored gear.

Choosing equipment for a station

Infrared cabins

Clearlight's Sanctuary cabins are plug-in panel kits that Clearlight says two people assemble in about 1 to 3 hours, with True Wave full-spectrum heaters on the front wall and far-infrared heaters elsewhere, in what Clearlight calls eco-certified mahogany or basswood. Clearlight states that a sauna "in a commercial location" is "still covered under our 5-year warranty", apart from its limited lifetime residential warranty; plan around the 5-year terms and confirm coverage with us.

Figures per Clearlight, which describes the Sanctuary 5 as fitting both "up to 4 adults" and "up to five people".

Size it for peak use, not the roster. See our Clearlight Sanctuary commercial guide and commercial saunas for gyms page.

Traditional saunas

A traditional sauna, with an electric heater and stones, can run hotter: Clearlight puts typical infrared temperatures at about 120°F to 150°F (48.8°C to 65.5°C) and traditional saunas at up to about 195°F (90.5°C). The heater sets the wiring and clearances; Harvia, and HUUM in its DROP manual, allow only a certified electrician to connect their heaters. On GFCI the makers disagree: Clearlight strongly recommends it in potentially wet locations, while Harvia, citing an international (IEC) standard, says a residual current device must not be installed in a heater's circuit, so your electrician and inspector decide. Confirm commercial warranty coverage in writing, and browse our traditional saunas.

Add-ons, with care

The Clearlight CORE tower is designed for use inside an active sauna, but it pushes most Clearlight models past their default circuit amperage, so plan Clearlight's published circuit upgrade with your electrician. A cold plunge such as the Clearlight Plunge (one person, 36°F to 104°F, standard 120V outlet) weighs about 1,357 lb full and belongs under the same policy and medical clearance as the sauna; see our contrast therapy guide for precautions and commercial cold plunge guide for selection.

Funding and procurement

We were unable to verify whether FEMA's Assistance to Firefighters Grant (AFG) program counts a sauna as an eligible cost, and make no claim either way. Station wellness equipment can be funded from operating or capital budgets, community support such as a local foundation or, where a program's current rules allow it, a grant. If a grant is involved, confirm eligibility with the program office in writing before ordering. We can provide a written commercial quote.

Home saunas for firefighters

The same order applies at home: turnout gear never comes into the household, clothes are changed and washed, and the shower comes first. A session follows all of that, hydrated, never after alcohol, and with your physician's input if you have a heart condition. The Clearlight Sanctuary 1 and Premier IS-1 and IS-2 run on a standard 120V, 15-amp outlet. Our best indoor saunas guide compares home models, and our infrared sauna benefits guide covers who should check with a clinician first.

Frequently asked questions

Browse all Clearlight saunas, or see our commercial program.

Clearlight, Sanctuary, Premier, True Wave and CORE are trademarks of Sauna Works, Inc., dba Clearlight Infrared. Sauna Republic is an authorized Clearlight dealer. Harvia and HUUM are trademarks of their respective owners. This article is for educational purposes and is not medical, occupational-health or legal advice. Clearlight describes its products as general wellness products; their statements have not been evaluated by the FDA, and they are not intended to diagnose, treat, cure or prevent any disease. Departments should follow their occupational medical program, NFPA and local requirements, and the manufacturer's installation and safety guidance.