The infrared sauna industry has exploded over the past five years, but not all studios maintain the same safety or quality standards—and some operate without proper licensing at all. A poorly maintained sauna or unqualified operator can expose you to electrical hazards, mold, burns, or ineffective equipment that won't deliver the wellness benefits you're paying for. Knowing what red flags to watch for will protect your health and your wallet.
Check for Proper Licensing and Insurance
Before booking a session, ask the studio directly for proof of business licensing and liability insurance. Legitimate infrared sauna studios should have a local business license (usually available through your city or county clerk) and general liability insurance that covers customer injuries. If the owner hesitates or claims they "don't need" licenses, walk out immediately.
Call your local health department to verify the studio is registered. Some jurisdictions classify infrared saunas under wellness facilities and require health permits; standards vary by region, but legitimate operators know their local rules. A studio that can't name the specific licensing body they report to is operating in a gray area.
Inspect Equipment and Maintenance Records
The cabin itself should look clean and well-maintained, with no visible mold, rust, or water damage. Infrared panels degrade over time, especially in humid environments; ask how often the studio replaces panels and whether they can show maintenance logs. Reputable studios typically replace panels every 3–5 years depending on usage.
Request to see electrical inspection certificates. Infrared saunas draw 3,000–6,000 watts of power; improper wiring or overloaded circuits create fire and shock risks. A studio should have recent electrical inspections (within the past 1–2 years) from a licensed electrician. Don't hesitate to ask for documentation—this is non-negotiable.
Check the interior temperature accuracy. The cabin should reach 120–150°F safely and consistently. If the studio can't tell you the exact temperature range it maintains, or if sessions feel uncomfortably hot or not warm enough, the thermostat or heating elements may be malfunctioning.
Watch for Unstandardized Pricing and Questionable Claims
Infrared sauna sessions typically cost $30–$60 per 30–45 minute session, or $100–$200 per month for unlimited packages. If a studio charges significantly below or above this range without clear justification (e.g., premium location, brand-new equipment, private cabins), ask why. Unusually cheap sessions may indicate corner-cutting on maintenance or inferior equipment.
Beware of studios making exaggerated health claims. Legitimate studios say things like "may help with circulation and relaxation." Red flags include promises to "cure" diseases, eliminate toxins, or replace medical treatment. The FDA doesn't approve infrared saunas as medical devices, so any studio claiming they treat specific diseases is either misinformed or misleading.
Verify Staff Credentials and Training
Ask what training the staff has completed. While there's no universal "infrared sauna technician" certification yet, responsible studios require staff to complete basic safety training covering equipment operation, emergency procedures, and client screening. A staff member who can't explain how the sauna works or what the contraindications are (e.g., pregnancy, certain heart conditions) is a liability.
Inquire whether the studio screens new clients for health conditions. A basic health questionnaire—asking about cardiovascular issues, pregnancy, medications, or recent injuries—shows the studio takes safety seriously. Studios that let anyone waltz in without screening may miss clients who shouldn't use saunas.
Red Flags Checklist
- No visible business license or inability to provide insurance details
- Moldy, rusty, or visibly damaged cabin or bench
- No temperature controls or thermometer
- Staff can't explain how to use the sauna safely
- No health questionnaire before your first session
- Exaggerated medical claims or promises of "detoxification"
- Unwillingness to show maintenance records
- Prices drastically below or above the $30–$60 per session average
Platforms like Mercoly help you compare and find trusted infrared sauna studios in your area, complete with verified reviews and licensing information—cutting through the guesswork.
Frequently Asked Questions
Q: What should I ask about the sauna's infrared panels during my first visit? Ask how old the panels are, when they were last replaced, and whether the studio uses far-infrared, mid-infrared, or a combination. Newer panels (less than 3 years old) typically perform better and are less likely to malfunction.
Q: Are there any health conditions that make infrared saunas unsafe? Yes—pregnant women, people with uncontrolled high blood pressure, severe heart conditions, or acute fever should avoid saunas. A responsible studio will always ask about these during intake and may ask you to check with your doctor first.
Q: How can I tell if a sauna is actually heating properly? The cabin should reach the advertised temperature (usually 120–150°F) within 10–15 minutes and feel consistently warm throughout. If it takes 30+ minutes to heat up or feels patchy, the equipment is likely worn out.
Ready to find a safe, licensed infrared sauna studio near you? Start your search on Mercoly today.