As a leader and innovator in the infrared sauna industry for over 20 years, we have been manufacturing infrared saunas that are both luxurious and effective. While our cabins are exceptional quality, the therapeutic benefits of infrared heat are our main focus.

Over the last eight years, there has been a big debate as to whether Carbon heaters or Ceramic heaters are “better”. Carbon heaters produce high quality, long wave infrared heat, but the problem is they do not produce a lot of infrared heat – in our testing they seemed weak. Ceramic heaters are powerful and emit a lot of infrared heat, but the wavelength tended to be shorter, thus less therapeutic.

Our R&D department has ended that debate by introducing the ONLY combination Carbon/Ceramic far infrared heater. Clearlight True Wave™ Far Infrared Heaters combine Carbon and Ceramic to produce healing infrared heat that is unmatched. Our heaters are comprised of micro-thin carbon fibers (1/1000th the thickness of a human hair) combined with our patented micro fine ceramic compound for higher infrared output (emissivity). We manufacture all our heaters in our own factory in a special process with the carbon/ceramic layers alternated with layers of a woven substrate which combine under high heat and pressure to make one heater at a time. This innovative process produces a heater with tremendous output and high thermal emissivity. The heater is then tested under power for several hours and measured for the electrical draw, surface temperature, and emf output in twelve locations.

The carbon in our heaters allows the heater to produce long wave far infrared heat. This long wave infrared heat penetrates deeper into your body and the infrared heat is more readily absorbed. The ceramic in our heaters gives the heaters a very high infrared output when compared to traditional carbon heaters so we can concentrate the heat directly on your body. All Clearlight Sauna® models utilize our True Wave™ Far Infrared Heaters.


Using a laboratory grade EMF meter and measuring directly on top of our True Wave heaters, our heaters have an average EMF output of about 2.5 milligauss (mg). Compare that to over 100mg for most of our competitors carbon based heaters. In addition, when we test where you are sitting in the sauna, there is virtually no EMF.

I’ve had the Clearlight sauna in operation for 2 weeks now and my wife and I are loving it. It has helped her rheumatoid arthritis and osteoarthritis pain immensely – she’s in it every day. The biggest thing I’ve noticed is the improvement in the quality of my sleep. I go to sleep more readily when I retire, sleep sounder, and don’t get up in the night as often as I did pre-sauna. I was out of town this week for 3 nights and really could tell a difference in sleep quality since I did not have it available.

Richard, Murfreesboro, TN


The larger size of our True Wave™ Far Infrared heaters mean more surface area, resulting in lower surface temperature. The result of this low temperature is that our heaters produce more FAR or LONG wave infrared heat which is more therapeutic for your body. This means better performance within the optimal wavelength range of 6 to 12 microns with a large portion of wavelengths at 9.4 microns. The human body absorbs more infrared at 9.4 microns.

With the high far infrared output (emissivity) of our heaters, you not only get the highest quality infrared heat, but you get a lot of it, and right where you want it – your body core. We position our heaters so that they surround your body concentrating the heat on your body core.

The key to infrared therapy is heating your body directly so you want heat on the front of your body and on the back of your body. Every Clearlight Sauna® model has heaters on the front wall, back wall, side walls, underneath the bench, next to your calves and in the floor. Surround Yourself In Wellness™ with Jacuzzi® infrared saunas.


All Clearlight Infrared Sauna® models have been shown to raise core body temperature. The data above from the Arcadia Cancer Clinic in Germany shows an average of a 3% core body temperature increase in a 40 minute Clearlight Infrared Sauna session.

All Clearlight Infrared Sauna® models have been show to increase your heart rate during a sauna session. The data above from the Arcadia Cancer Clinic in Germany shows an average of a 68% increase in heart rate in a 40 minute Clearlight Infrared Sauna session.


We understand the difficulty in choosing an infrared sauna and trying to determine which heaters will work best for you. The following are a few questions to ask when comparing various heaters:

1) What is the surface temperature of the heater?
The is one of the most important questions as it determines the size the of the infrared wavelength and the overall effectiveness of the heater. The two scientific principals that govern infrared emissions are called Planks Law and Weins Law. Both of these scientific laws have an equation with several constants and the only variable is the surface temperature of the heater. They both say that the lower the surface temperature of the heater, the longer the infrared wave will be and the more effective the infrared heat will be for you.

2) Does the sauna have front and back heaters?
One of the keys to sweating and effective detoxification in an infrared sauna is warming your body and raising your core body temperature. You want to find a sauna that heats both the back and front of your body. You cannot effectively detox in an infrared sauna without warming your front core. Many saunas on the market today leave the front heaters out or have very small front heaters for aesthetic reasons – a huge mistake in our opinion. Our Clearlight True Wave™ heaters are positioned so that they cover your full back area and the front heaters are positioned so that they are aimed at your front core. They do an excellent job of warming your body core and raising your core body temperature.

3) Is the far infrared heat directed where it’s most needed?
We have found that the problem with traditional carbon heaters is that, while they produce high quality infrared heat, they don’t produce a lot of it and it is not concentrated on your body. These heaters work well when they are within a few inches of your body as in some of the lay down infrared units, but not when they are in a large sauna cabin. The heaters go all the way up over your head and are really just heating the sauna cabin air. Because infrared heat travels in a straight line, you want to make sure that the heater directs the heat toward your body core, not just into the air around you.

4) Radiant heat vs. reflected heat:
You will see many heaters on the market that are a thin, single rod with a metal reflector behind it. Generally, these heaters produce low quality far infrared heat when compared to a large flat panel far infrared heater. First, a single rod heater must run at a much higher surface temperature than a large flat radiant heater to produce sufficient infrared heat. As mentioned above, the higher the surface temperature the less effective the infrared heat will be.


Because of the lower surface temperature of our True Wave™ Far Infrared Heaters, sitting in your Clearlight sauna is more enjoyable. You’ll find the heat in your Clearlight Sauna® model gentler than most, yet deeper and more penetrating – overall a better sauna experience.

In their book Beyond Antibiotics, Drs. Michael A. Schmidt et al. state the following:

“Saunas are being used by some doctors to stimulate the release of toxins from the bodies of their patients. They have found that a lower temperature (105-125 F) sauna taken for a longer duration is most beneficial. These low temperatures stimulate a fat sweat, which eliminates toxins stored in fat, as opposed to the high temperature sauna, which encourages a water sweat.”

Our True Wave™heaters reach optimal temperature very quickly so your sauna is ready for you to use in 10 – 15 minutes.



The human body sends and receives far infrared waves. The range of far infrared waves generated by the human body is 6 to 20 microns. The optimal micron output range of an infrared heater is between 6 and 12 microns which is very close to the resonant frequency of a water molecule and the optimum infrared absorption rate of the human body. This similarity makes sense since our bodies are almost 70% water. This range, sometimes called the “Vital Rays” appears to have special regenerative effects on the body.

When far infrared waves are applied to water molecules, these molecules begin to vibrate. This vibration reduces the ion bonds and the eventual breakdown of the water molecules causes encapsulated gasses and other toxic materials to be released.

The result of Clearlight True Wave™ patent pending heater designs allows for better performance well within this vital wave range of 6 to 12 microns with a good portion of wavelengths at the frequency at which a water molecule resonates or vibrates. This vibration causes a release of cellular toxins such as mercury, aluminum, cholesterol and toxic gasses such as sulfur and formaldehyde. This optimal micron output also allows for deeper penetration of far infrared heat, which improves pain relief, detoxification, circulation, and increased peripheral blood flow.


Don’t be fooled by marketing hype and supposed studies stating only one material is better for producing far infrared heat – know the facts. When evaluating a material for it’s properties to give off far infrared heat we evaluate its “emissivity”. Emissivity is the measure of an object’s ability to emit far infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody).

Raytek, one of the leading infrared instrument manufactures has the following emissivity tables on their website. When reading the table, please note the values in 5-14 micron ranges – the “vital” range for healing the human body (the symbol μm stands for “micron”). You will see ceramic has an emissivity of .95 – the closest to a perfect black body at 1.0. That is why the patented ceramic compound that we add to our True Wave™ heaters is so important.

Please note the highlighted entry’s in the table:
Emissivity Table for Non-Metals (Cermaic vs. Carbon)
Table for Metals (Cermaic vs. Steel and Incoloy Rods)

Most infrared heaters used in our competitors’ saunas were designed for industrial use. These infrared heaters are used to cure the paint on cars because it heats the paint from the inside out or as room heaters. Clearlight Infrared True Wave II heaters were designed by us, specifically for use in our saunas and they were designed to heat the human body.


All Clearlight Sanctuary Sauna™ models include our True Wave™ Full Spectrum infrared heaters. These heaters are high output infrared heaters producing near, mid and far infrared. Every Clearlight Sanctuary Sauna™ model has 1,000 watts of full spectrum infrared. That’s 25 times the power of our closest competitor.


The infrared spectrum is comprised of near, mid and far infrared. While the majority of the benefit you receive in your Jacuzzi® sauna come from the far infrared band, there are added benefits and enhancements by adding in all three wavelengths.

Our Clearlight True Wave™ Full Spectrum heaters emit about 1/3 near infrared, 1/3 mid infrared and 1/3 far infrared. The following are some of the benefits of full spectrum infrared therapy:

• Near Infrared is the shortest wavelength but penetrates the deepest. It has the distinct property that it is not captured by the water of the body allowing it to penetrate the deepest into the body and very effectively heat your body core. It also does not cause the “resonant frequency” associated with far infrared so using near infrared alone is not the best way to detoxify.

Near infrared is associated with photobiomodulation which directly produces energy within the cells through ATP stimulation. Not surprisingly, near infrared helps wound healing and increases cellular repair.

• Mid infrared wavelengths are also captured by water molecules while increasing circulation through vasodilation, bringing oxygen to areas needing healing, increasing heart rate and overall metabolism.

• Far infrared is the closest of the wavelengths to the heat given off by our own body. Far infrared is readily captured by the water molecules in the body and releasing its energy. Our bodies actually give off far infrared wavelengths at about 9.4 microns. Since far infrared wavelengths feel very natural and normal to us, our energy is enhanced and strengthened.

If a good portion of the far infrared from a high quality sauna heater at this 9.4 micron range, a subtle “resonant frequency” or vibration is set up within the cells of the body that increases the expulsion of toxins. The toxins are then eliminated either through the three main organs of elimination (urine, feces and exhalation) or directly through the skin, the largest organ of the body.

Far infrared activates sweat glands eliminating these chemicals directly through the skin. Expelling toxins through the skin is advantageous because it relieves the liver of having to process quantities of these fat soluble compounds. Sweating alone through infrared sauna usage can be quite efficient at removing unwanted chemicals.

As innovators in the infrared sauna industry, our founder, Dr. Raleigh Duncan, has patented or has patent pending’s for much of the technology we use. You can see just a few of the Clearlight Sauna® Patents by clicking the titles below:

Low EMI far infrared sauna room
Patent #: US 9078803 B2

Electromagnetic Wave Reducing Heater
Patent #: US 9,844,100

Infrared therapy chamber
Patent #: US 20120221080 A1

Rotating Control Panel
Patent #: US 20140191048 A1