Do Infrared Sauna Heating Elements Lose Efficiency Over Time?

Infrared saunas have become a popular thermotherapy option for home and commercial wellness in recent years, with increasing emphasis placed on the user experience in gyms, spas, hotels, and high-end homes. But the infrared heating element, being the core component, suffers from degradation after prolonged use. At what point does it need to be replaced?

Alphasauna, a high-end sauna manufacturer with a complete production system, explains the infrared attenuation mechanism and lifespan of Infrared Sauna Heating Element under long-term high-temperature environments.

Why are Infrared Sauna Heating Elements so important?

Many consumers and operators rank the heating efficiency, materials, price, and functionality of infrared sauna rooms. But, for manufacturers and distributors, the lifespan, durability, and reasons for declining infrared radiation efficiency of the heating elements are crucial. Consumers might perceive it simply as a matter of heating element temperature, but the reality is a decrease in infrared radiation efficiency.

This typically occurs due to the aging process of the Infrared Sauna Heating Element operating at high temperatures for extended periods. Even if the surface temperature of the heating element can still reach 50-60℃, its infrared radiation efficiency may decrease by 15-30%.

This directly impacts the user’s experience and the therapeutic effect of the infrared sauna.

Tip: The infrared radiation efficiency of a heating element refers to its ability to convert electrical energy into far-infrared heat energy that is more beneficial and effective for the human body.

Common Infrared Sauna Heating Element in Infrared Sauna Rooms

In the sauna market, three common types of Infrared Sauna Heating Element are used: ceramic heating tubes, mica plates, and carbon fiber heating plates. Different heating elements vary in user experience, lifespan, and infrared decay rate. The table below is based on Alphasauna’s own products and does not represent other suppliers’ products; it is for reference only.

Why do Infrared Sauna Heating Element Degrade?

High-Temperature Environment

Firstly, regardless of whether it’s a ceramic tube, mica plate, or carbon fiber plate, prolonged exposure to the temperature range of 45-65℃ in an infrared sauna, despite being relatively low, can cause thermal expansion and contraction to make the materials gradually brittle. The materials harden and develop micro-cracks, which is one reason for the reduced far-infrared emissivity of the infrared sauna heating element.

Oxidation of Metal Heating Wire and Resin Aging

Mica plates and ceramic tubes contain heating wires. Prolonged operation at high temperatures can easily lead to increased resistance, decreased heating efficiency, and the formation of localized hot spots, which also contribute to the degradation of the infrared sauna heating element.

Although Alphasauna uses aerospace-grade carbon fiber heating plates, like ordinary carbon fiber heating plates, the surface temperature of the heating plate can reach over 80℃ during operation. This causes the resin molecules on the surface of the carbon fiber plate to break, reducing adhesion, creating localized micro-cracks, darkening or yellowing the color, and a slight decrease in surface thermal conductivity.

Tip: Aerospace-grade carbon fiber panels age more slowly and degrade less than ordinary carbon fiber heating panels.

Humidity Effects

Although infrared saunas are dry saunas, they still have internal humidity. Users unfamiliar with sauna cleaning methods, such as spraying water, not only increase internal humidity but also speed up the damage to the infrared heating elements and electronic components.

Voltage Fluctuations

Prolonged improper use of the infrared sauna will directly affect the efficiency of the heating elements. For example, low voltage will prevent the sauna temperature from rising, which many users may mistakenly interpret as the heating elements degrading. High voltage will rapidly erode the heating elements, shortening their lifespan.

How to Determine if an Infrared Sauna Needs Heating Element Replacement?

If your infrared sauna feels like it’s heating up slower and the temperature is lower than before (the greatest temperature doesn’t reach the previous level), or if certain areas are cold or have lower temperatures during use, it indicates that the infrared radiation efficiency of the heating element has decreased. To maintain the comfort of the sauna, the heating element needs replacement.

Secondly, you can observe whether the infrared heating element has yellowing, black spots, or areas that don’t heat up. Suppose the heating element emits an unusual odor, slight smoke, or fluctuates abnormally in temperature during use. In that case, it indicates that the internal materials of the heating element are old or damaged and need immediate replacement.

Of course, besides the above situations, malfunctions in the infrared control panel or the heater can also be mistaken for decreased infrared efficiency. If these problems are ruled out and there is no significant improvement, it may also mean that the infrared sauna heating element needs replacement. If your infrared sauna heating element malfunctions, based on the following points, it is recommended to first check the control panel or the heater itself before determining whether the heating element needs replacement.

Tip: Common control panel and circuit malfunctions include the following:

A. A malfunctioning temperature sensor is causing the controller to prematurely stop heating.

B. Aging relays in the control panel or circuitry leading to insufficient heating power.

C. Loose wiring connections or oxidation from prolonged use, causing intermittent power outages.

D. Inconsistent voltage is preventing the heating element from operating at full capacity.

E.Control panel firmware malfunction or button failure.

How to Extend the Lifespan of an Infrared Sauna Heating Element?

For users who have already purchased or are planning to buy an infrared sauna, understanding how to maintain and use the heating element is crucial for extending its lifespan. This not only enhances the user experience but also saves costs. Here are some methods compiled by Alphasauna to extend the lifespan of the Infrared Sauna Heating Element:

Avoid Humid Environments

Unlike traditional dry saunas, Infrared Sauna Heating Elements are more susceptible to humidity and condensation. High humidity can damage the power lines, causing short circuits or accelerating aging.

The correct method is to avoid splashing water inside the infrared sauna when using it, and to open the sauna door for ventilation after use to ensure the interior remains dry.

Avoid Frequent Power On/Off and Prolonged Full-Load Operation

When using an infrared sauna, avoid frequently turning it on and off after a period of use, as this can cause the heating element to crack and the connections to loosen. Also, avoid prolonged full-power operation; it is recommended to allow the material to cool down every 3-4 hours.

The Correct Method is as Follows.

When using the sauna, maintain continuous operation and avoid frequent switching on and off. Secondly, avoid setting the temperature too low, as this will cause the temperature control to cycle (stop/start after a few minutes of use). Finally, ensure the voltage of your infrared sauna is stable to prevent damage to the heating element from excessively high or low voltage.

Regularly check the circuit and board surface. Check the circuit of the infrared sauna heating element every 3 to 6 months for looseness or burning caused by high temperatures. Also, check the surface of the heating element for scorching, minor cracks, etc.

Regularly Clean the Heating Element.

Also to regular cleaning of the infrared sauna, the heating element also needs to be cleaned to ensure the surface is free of oil.

The correct method is: gently wipe with a slightly damp, soft cloth, ensuring it dries completely immediately. Avoid using strong alkaline or acidic cleaners, and avoid spraying directly onto the infrared sauna heating element, as this will damage it.

Conclusion

All products, including the Infrared Sauna Heating Element, will experience natural aging over time. This is a normal phenomenon, although the rate of infrared emissivity decay varies depending on the materials used. Thus, choosing a reliable manufacturer is crucial, as it significantly reduces after-sales burden and enhances the customer’s product experience.

If a Heating Element in an Infrared Sauna Fails, Can the Sauna Still Operate?

It can operate normally, but the thermal efficiency of the sauna will decrease. Simply replace the heating element to restore its functionality.

Can an Aged Heating Element Still Be Used?

Generally, if the heating element is not burnt, smoking, has exposed wires, or overheats, it can still be used. But, aged heating elements not only have reduced infrared radiation efficiency but also significantly degrade the user experience and fail to achieve the desired therapeutic effect. Thus, replacement is highly recommended.

Which Heating Element is Best For Commercial Environments?

In commercial environments, the optimal choice for infrared sauna heating elements is a carbon fiber heating plate. It not only has a slow decay rate and long lifespan but is also more energy-efficient in commercial operation, resulting in lower long-term costs.

If the budget is limited, moisture-proof encapsulated mica panels can also be used. Although their lifespan and stability are not as good as carbon fiber, they are still an excellent choice for commercial use.

At What Point Should an Infrared Sauna Heating Element be Replaced?

It should be replaced when the surface temperature of the infrared sauna heating element drops by more than 10-15℃ and the infrared efficiency decreases by more than 20-25%.