If your sauna isn’t heating properly, there are a few common causes that can usually be identified quickly. This guide will walk you through the most likely scenarios and how to resolve them.
⚠️ Safety First
If you notice any of the following, stop immediately:
- Visible flames
- Smoke
- Burning smell
- Melted wiring
- Electrical sparking
Turn off power at the breaker immediately and do not continue troubleshooting.
These situations are safety-critical and taken very seriously by our team. Please contact support right away so we can assess the situation and guide next steps.
Basic Checks (All Models)
Before diving into deeper troubleshooting, start with these quick checks:
-
Confirm Power
- Ensure the sauna is plugged in securely
- Check that the breaker is on and not tripped
- Avoid extension cords if possible
- Ensure you have the proper voltage for your sauna model (check the product page on our website)
-
Check the Control Panel
- Is the display on?
- Can you start a heating session?
-
Verify Settings
- Make sure heating is turned ON (not just power)
- Increase temperature and time to test
Using an Extension Cord (If Needed)
We recommend plugging your sauna directly into a wall outlet whenever possible.
If an extension cord must be used, it should meet all of the following requirements:
- Matches the correct plug type for your sauna (typically 20A, 120V)
- Locking (twist-lock) connection
- Heavy-duty 12-gauge (12 AWG) wire
- Rated for at least 20 amps / 125 volts
Using an incorrect extension cord may result in:
- Reduced heating performance
- Power instability
- Overheating or safety concerns
Recommended Example
A locking, 12-gauge 20A cord similar to this is appropriate:
https://www.amazon.com/dp/B0DSK74TKL?th=1
Avoid Using:
- Standard household extension cords
- Light-duty or thin cables
- Non-locking connectors
- Power strips or surge protectors
If you’re unsure whether your setup is appropriate, our support team can help review it.
Common Heating Issues by Symptom
Sauna Won’t Heat at All
Possible causes:
- No power to the unit
- Control panel issue
- Internal wiring or connection issue
What to do:
- Confirm outlet and breaker are working
- Power cycle the sauna (unplug for 60 seconds, then reconnect)
- If the control panel remains unresponsive, contact support
Sauna Powers On But Doesn’t Heat
Possible causes:
- Heating function not activated
- Loose heater cable
- Faulty heating component
What to do:
- Confirm heating is turned ON
- Check for any visible loose connections (if accessible)
- If heaters remain cold, a component may need to be replaced
Sauna Heats Slowly
In many cases, slower heating is expected depending on conditions.
Factors that affect heat-up time:
- Room or ambient temperature
- Outdoor conditions (for outdoor models)
- Electrical setup
- Sauna model and size
Typical performance:
- Faster heating at lower temperatures
- Slower increases as the sauna approaches max temperature
- Maximum heat-up may take up to 2 hours for certain models
What to do:
- Ensure the door is fully closed
- Allow adequate preheat time
- Verify proper electrical setup (dedicated circuit recommended)
One Area Isn’t Heating
Possible causes:
- Faulty heater panel or bulb
- Loose wiring connection
- Misconfigured internal connections
What to do:
- Compare with other heating areas
- If one section remains cold while others work normally, that component may need replacement
- Contact support with details for next steps
Heater Stays On After Sauna Is Turned Off
This is not expected behavior.
Possible cause:
- Internal wiring issue
What to do:
- Turn off and unplug the sauna
- Do not continue using the unit
- Contact support so we can assist
Electrical Setup Matters
Electrical setup plays a major role in heating performance.
Recommended setup:
- Dedicated circuit (no shared appliances)
- Correct voltage for your model
- Standard breaker (not GFCI/AFCI unless specified)
If breakers are tripping or heating is inconsistent, a licensed electrician can help verify the setup.
FAQs
Why isn’t my sauna reaching the maximum temperature?
This can be normal. Saunas heat more quickly at lower temperatures and slow down as they approach the maximum. Room conditions and ventilation also affect performance.
Is it normal for heating to take a long time?
Yes. Many saunas take 60–120 minutes to reach peak temperature, especially in cooler environments. Where possible, we recommend preheating the sauna using the app or timer modes on certain models to allow sauna to heat up before you're ready for your session.
Why does one panel feel cooler than others?
This usually indicates a loose connection or a faulty heating component. If the issue continues, that part may need to be replaced.
My sauna turns on but doesn’t heat. What should I check?
Start by confirming that heating is turned on. If it is, the issue may be a connection or internal component. Support can help guide next steps.
Can I use an extension cord?
Yes, but only if it meets the required specifications:
- 20A rating
- 12-gauge wire
- Locking (twist-lock) connection
Using the wrong cord can affect performance and safety.
What should I do if my breaker keeps tripping?
- Confirm the sauna is on a dedicated circuit
- Avoid GFCI/AFCI breakers unless required
- If the issue continues, consult a licensed electrician
When should I contact support?
Please reach out if:
- The sauna won’t heat at all
- Only part of the sauna is heating
- The control panel isn’t functioning properly
- The issue persists after completing the steps above