Your infrared sauna has arrived, the room smells like fresh cedar, and you’ve already logged your first session. It feels wonderful. But then you start to wonder: Was the installation actually safe?
Most sauna owners assume that because their unit is brand-new, it is automatically hazard-free. In reality, many infrared sauna risks develop after installation — through loose wiring, incorrect electrical connections, improper clearance, or damage hidden during shipping. This article is a post-purchase safety verification checklist. It is not medical advice, and it makes no claims about any health benefits of sauna use. It is written only to help you spot the warning signs of an unsafe installation before something goes wrong.
If you’re unsure about any of these signs, stop using the sauna and contact a licensed electrician or the manufacturer. At Sauna Shop, we want you to enjoy your investment safely — so let’s walk through the five most common red flags.
1. A Burning Or Plastic Smell That Doesn’t Go Away
All new saunas can have a temporary “new equipment” smell during the initial break-in period. Heaters, adhesives, and insulation can emit a faint odor as they warm up for the first time. That’s normal. What is not normal is an acrid, burning, or fish-like scent that persists after three or more sessions.
The danger: A persistent burning smell can mean wire insulation is breaking down, a component is overheating, or a foreign object has fallen into the heating area. In rare cases, it can also indicate an electrical short.
What to do:
– Let the sauna run empty for a short period according to the manufacturer’s instructions while the room is well ventilated.
– If the smell remains or grows stronger, switch the sauna off at the circuit breaker — not just the control panel.
– Do not use the sauna until a qualified technician has inspected it.
For more on electrical safety in the home, the Consumer Product Safety Commission maintains a useful home electrical safety guide that explains why persistent odors and tripping breakers should never be ignored. You can review that resource at CPSC.gov.
2. The Breaker Trips Repeatedly
Your infrared sauna is a high-powered appliance. It needs its own dedicated circuit, with a rating that matches the unit’s load. If the GFCI (ground fault circuit interrupter) or the main breaker trips every time the sauna runs, that is not a coincidence — it is an electrical warning.
Possible causes:
– The circuit was overloaded because other appliances share it.
– The sauna was wired with insufficient gauge wire.
– There is a short circuit or a ground fault inside the sauna.
– The GFCI itself is faulty, although that is less common.
A common mistake is to simply replace the breaker with a larger one. This is dangerous. The breaker is designed to protect both the wiring and you. Upsizing a breaker without upgrading the wiring can create a fire hazard. Call a licensed electrician to verify the circuit load, wire size, and connections. If you need a reference point, the UL standards for sauna equipment require proper electrical construction and clear marking for installation requirements — so make sure your unit is listed and installed according to its marking.
3. Uneven Heat or Hot Spots On the Panels
Infrared saunas are designed to emit consistent radiant heat across the heater panels. When installation goes wrong, you might notice that one area is significantly hotter than another. Some owners report visible darkening, scorching, or a “glowing” heater that seems much brighter than the rest.
This can happen because:
– A heating element is loose or broken.
– A connection is failing, increasing resistance and causing localized heat.
– The reflector behind the emitter has shifted during shipping or assembly.
– The wood around the heating element has dried out too much in one spot.
What to check:
– Let the sauna heat up for a while, then carefully hold your hand several inches away from each panel — never touch the emitters directly.
– If one panel is visibly much hotter, turn the unit off.
– If you have a non-contact infrared thermometer, use it to compare panel temperatures. A large variation between panels is a sign of a problem.
Uneven heat is not only an annoyance; it is a sign that parts may be overheating. Overheated wiring is one of the leading causes of insulation failure in electrical appliances.
4. Visible Damage, Exposed Wires, or Loose Connections
After delivery and assembly, it is important to inspect the physical wiring and components. The wood may look pristine, but behind the panels or behind the control box, a cable could be pinched, chafed, or improperly connected.
Look for:
– Exposed copper wires
– Melted or blackened insulation near wire terminals
– Loose terminal screws
– Cracked or broken control-panel housings
– Door hinge wires that are pinched every time the door moves
– Any sign of water damage around an electrical connection
If you see any of these, do not use the sauna. Contact the manufacturer or a qualified installer. An exposed wire is not a “minor” issue — it is a shock and fire hazard. Even if the sauna “works,” a damaged connection can overheat over time.
Also check the power cord. The cord should be in good condition, securely attached to the unit, and plugged into a grounded outlet that is properly rated for the sauna. If the cord is loose, tugging, or warm to the touch, that’s another red flag.
5. Improper Clearance and Blocked Ventilation
Infrared saunas need room to breathe. They produce a lot of waste heat outside the cabin, and the space around the unit must allow that heat to dissipate. Every sauna model has minimum clearance requirements to walls, ceilings, and combustible materials.
Too many owners place their sauna too close to a wall, under a shelf, or in a corner with no airflow. Others block the bottom vent with a rug or a laundry basket.
Signs of poor clearance:
– The wall or floor near the sauna feels dangerously hot to the touch during use.
– The sauna’s exterior panels are excessively hot even though the unit is operating normally.
– The room temperature around the sauna becomes overheated very quickly.
– There is no gap between the sauna and any combustible surface.
Check your owner’s manual for clearance distances. If the manual has been lost, look up the model online. You can also consult the National Fire Protection Association or local building codes for guidance on installing heating appliances. Although infrared saunas do not burn wood or gas, they still require careful placement to minimize fire risk.
How to Verify Your Installation Safely
Here’s a quick post-purchase checklist based on the five signs above:
- Have a qualified electrician confirm the dedicated circuit and ground fault protection.
- Run a scheduled test in a ventilated space and inspect for unusual smells.
- Compare surface temperatures on each heater panel.
- Perform a physical inspection of all visible wires, plugs, and connections.
- Measure the clearance around the unit against the manufacturer’s instructions.
Keep a record of your sauna’s model, serial number, purchase date, and installation date. That way, if you ever need support, you can quickly provide the details.
When In Doubt, Stop Using It
The safest attitude with an electrical appliance is simple: When in doubt, shut it down. An infrared sauna is an expensive purchase, but it is not worth risking your home or your safety over an installation issue that can be fixed.
If you bought your infrared sauna from Sauna Shop, our installation and safety resources are available to help. We cannot diagnose or repair a unit you already own unless you purchased it from us, but we can point you to the right manual, replacement part, or qualified technician. We can also quote you on a replacement sauna if yours cannot be repaired safely.
Request a Quote Today
Do you want to replace an aging sauna, add a second dedicated circuit, or upgrade to a model with clearer installation documentation? Sauna Shop offers high-quality infrared saunas and professional installation support.
Request a quote now and we’ll help you choose and install a sauna with safety — not guesswork — at the center of the project.
Sauna Shop · Safe heat for modern living.
This article is for informational purposes only and is not intended as medical advice. Always follow your manufacturer’s instructions and consult a licensed electrician or installer before using any sauna.
Leave a Reply