Why is My Infrared Sauna Not Heating Up? Troubleshooting Tips to Fix It

Your infrared sauna might not be heating up due to a faulty heating element or a malfunctioning thermostat.

Why is My Infrared Sauna Not Heating Up? Troubleshooting Tips to Fix It

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Common Reasons For Infrared Sauna Not Heating Up

Having an infrared sauna at home can provide a plethora of health benefits, from relaxation to detoxification. However, it can be frustrating when your infrared sauna is not heating up as expected. There are several common reasons why this might occur, and in this section, we will explore some of these issues and provide troubleshooting solutions to help get your sauna back to its optimum heating performance.

Incorrect Power Supply

  • Ensure that your infrared sauna is properly connected to a power supply that matches its voltage requirements.
  • Check the user manual or contact the manufacturer to verify the correct power specifications.
  • Use a dedicated outlet to avoid overloading the circuit and compromising the sauna’s heating capabilities.

Ensure Proper Outlet Usage

  • Avoid using extension cords or adapters that may not provide sufficient power to the sauna.
  • Plug the sauna directly into a properly grounded outlet for optimal performance.
  • Verify that the outlet is in good condition and check for loose or faulty connections.

Check Circuit Breaker

  • Inspect the circuit breaker associated with the outlet the sauna is connected to.
  • Ensure that the breaker is in the “on” position, and if it has tripped, reset it.
  • If the circuit breaker continues to trip repeatedly, there may be an electrical issue that requires professional assistance.

Malfunctioning Heating Elements

  • Heating elements are essential components responsible for generating heat in the sauna.
  • If the sauna is not heating up, there could be a malfunction in one or more heating elements.
  • Inspect the elements for any signs of damage, such as discoloration or breakage.

Inspect And Test Heating Elements

  • If you suspect a malfunctioning heating element, perform a visual inspection.
  • Check for any loose connections, corrosion, or unusual wear.
  • Use a multimeter to test the heating elements for continuity and ensure they are functioning correctly.

Replace Damaged Heating Elements

  • If a heating element is found to be faulty, it will need to be replaced.
  • Contact the sauna manufacturer or a professional technician to obtain the correct replacement parts.
  • Follow the installation instructions provided by the manufacturer or seek professional assistance if necessary.

Faulty Temperature Sensors

  • Infrared saunas typically have temperature sensors that monitor and regulate the heat.
  • If the temperature sensor is faulty, it may not accurately detect the sauna’s temperature, resulting in insufficient heating.
  • Inspect the temperature sensors for any damage or loose connections.
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Monitor Temperature Sensor Readings

  • Use a thermometer to compare the temperature readings displayed on the sauna’s control panel with the actual sauna temperature.
  • If there is a significant discrepancy, it may indicate a faulty temperature sensor.

Replace Or Calibrate Temperature Sensors

  • If the temperature sensor is not functioning correctly, it may need to be replaced.
  • Contact the sauna manufacturer for guidance on obtaining a replacement sensor.
  • Alternatively, some saunas have calibration procedures that allow you to adjust the sensor settings for improved accuracy.

By identifying and addressing these common issues, you can troubleshoot why your infrared sauna is not heating up and take the necessary steps to restore its functionality. Remember, if you encounter any difficulties or are unsure about performing any repairs, it is always best to seek professional assistance to ensure safety and avoid further damage to your sauna.

Inadequate Insulation And Ventilation

Are you experiencing issues with your infrared sauna not heating up as it should? One possible cause could be inadequate insulation and ventilation. Inadequate insulation can result in heat loss, while poor ventilation can hinder the flow of hot air within the sauna.

Let’s dive deeper into this issue and explore some potential solutions.

Assess Insulation Quality

  • Inspect the walls, ceiling, and floor of your sauna to determine the quality of insulation.
  • Look for any gaps, cracks, or damaged areas that could be allowing heat to escape.
  • Consider upgrading the insulation if it is insufficient or worn out.

Check Door And Wall Seals

  • Examine the seals around the sauna door and walls to ensure they are tightly secured.
  • Inspect for any signs of wear and tear or gaps that could be causing heat loss.
  • Replace or repair the seals if necessary to improve insulation and heat retention.

Inspect Insulation Material

  • Verify the type of insulation material used in your sauna.
  • Ensure it is appropriate for heat insulation and has not deteriorated over time.
  • Consider upgrading to a higher-quality insulation material for better heat retention.

Evaluate Ventilation System

  • Assess the ventilation system in your sauna to ensure it is functioning properly.
  • Check for any blockages, obstructions, or malfunctioning components.
  • Repair or replace any faulty ventilation mechanisms to enhance air circulation and heat distribution.
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Clean Air Vents And Filters

  • Regularly clean the air vents and filters in your sauna to prevent debris accumulation.
  • Clear any dust, dirt, or foreign objects that may be obstructing the airflow.
  • This will help maintain optimal ventilation and ensure efficient heat distribution.

Test Airflow Velocity

  • Measure the airflow velocity within your sauna to determine if it is adequate.
  • Use an anemometer or consult a professional sauna technician for accurate measurements.
  • Adjust the ventilation system as needed to achieve optimal airflow for effective heating.

By addressing inadequate insulation and ventilation in your infrared sauna, you can potentially resolve the issue of it not heating up properly. Assessing insulation quality, checking door and wall seals, inspecting insulation material, evaluating the ventilation system, cleaning air vents and filters, and testing airflow velocity are crucial steps in troubleshooting this problem.

Improve the insulation and ventilation of your sauna to enjoy a properly heated and relaxing sauna experience.

Poor Sauna Usage Practices

If you’re finding that your infrared sauna is not heating up as expected, there could be a few reasons behind this issue. One common culprit is poor sauna usage practices. By not following the proper procedures and guidelines, you may be inadvertently hindering the heating process.

Let’s take a closer look at some of the key points to consider:

Incorrect Pre-Heating Procedure

  • Avoid immediately starting your sauna session without pre-heating it properly.
  • Ensure that the sauna is turned on and set to the desired temperature before entering.
  • By neglecting the pre-heating process, you may experience a lack of sufficient heat.

Allow Sufficient Pre-Heating Time

  • Give your infrared sauna ample time to reach the desired temperature.
  • Depending on the sauna model and size, this may take anywhere from 10 to 30 minutes.
  • Rushing into the sauna prematurely can result in a less than optimal heat experience.

Avoid Opening The Door Frequently

  • Limit the number of times you open the sauna door during your session.
  • Each time you open the door, heat escapes, causing the temperature to drop.
  • If you constantly open and close the door, the sauna may struggle to heat up properly.
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Overloading The Sauna

  • Be mindful of the recommended capacity for your sauna model.
  • Overfilling the sauna with too many people or objects can strain its heating capabilities.
  • Ensure that the sauna has enough space to evenly distribute heat throughout the session.

Ensure Sauna Capacity Is Not Exceeded

  • Check the specifications of your sauna to determine its maximum capacity.
  • Exceeding the recommended number of occupants may inhibit the sauna’s ability to heat up effectively.
  • Consider rotating users if you have more people than the sauna can comfortably accommodate.

Remove Excessive Objects And Clothing

  • Before entering the sauna, remove any excessive objects or clothing that could impede heat absorption.
  • Bulky items can act as a barrier, preventing the heat from reaching your body effectively.
  • Wearing lightweight, breathable clothing or opting for a towel can promote better heat penetration.

By practicing good sauna usage habits, you can maximize the effectiveness of your infrared sauna and ensure that it heats up properly. Remember to follow the correct pre-heating procedure, allow sufficient time for the sauna to reach the desired temperature, avoid frequent door openings, be mindful of the sauna’s capacity, and remove any objects or clothing that could hinder the heat absorption process.

With these tips in mind, you’ll be able to fully enjoy the therapeutic benefits of an infrared sauna session.


If you’re experiencing issues with your infrared sauna not heating up, it’s important to troubleshoot the problem to ensure you’re getting the most out of your sauna sessions. Start by checking the power source and ensuring it’s properly connected. Check the control panel to make sure the temperature settings are correct.

If these steps don’t resolve the issue, consider checking the heating elements for any signs of damage or wear. Additionally, make sure the sauna is properly insulated to retain the heat. Keeping the sauna clean and removing any obstructions around the heating elements can also help improve heat distribution.

Regular maintenance, such as changing the sauna’s filter and keeping the interior clean, can help extend the lifespan of your sauna and ensure it continues to operate efficiently. By following these troubleshooting steps and practicing regular maintenance, you’ll be on your way to enjoying a fully functional infrared sauna.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.