Near Infrared vs Far Infrared: The Simple Explanation
One of the most common questions sauna buyers ask is:
“What is the difference between near infrared and far infrared?”
The simplest answer is that near infrared is primarily associated with light-based wellness applications, while far infrared is primarily associated with heat therapy. Both are forms of infrared energy, but they interact with the body differently and create different experiences inside a sauna.
Understanding that distinction makes it much easier to understand full spectrum sauna technology and decide which type of infrared sauna may be the best fit for your goals.
What Is Infrared Energy?
Infrared energy is a natural form of energy that exists just beyond visible red light on the electromagnetic spectrum.
Although infrared wavelengths are invisible to the human eye, we experience them every day. Much of the warmth you feel from sunlight comes from infrared energy reaching your skin. Infrared sauna systems use specially designed heaters and light sources to generate specific infrared wavelengths in a controlled environment.
The important thing to understand is that infrared is not a single wavelength. It is a range of wavelengths, and different parts of that range create different effects.
What Is Near Infrared?
Near infrared wavelengths sit closest to visible red light on the electromagnetic spectrum.
Unlike far infrared, near infrared produces relatively little heat. Instead, it is commonly discussed in relation to photobiomodulation, light therapy, recovery applications, skin wellness, and cellular energy production. Researchers continue studying how near infrared light interacts with cells, tissues, and mitochondria, which are often referred to as the powerhouses of the cell because they help produce energy.
This is one reason near infrared technology has become increasingly popular not only in saunas but also in dedicated red light and photobiomodulation devices.
Related Reading:
https://celebrationsaunas.com/what-is-photobiomodulation/
What Is Far Infrared?
Far infrared wavelengths are much longer than near infrared wavelengths and are responsible for most of the radiant heat people associate with infrared sauna therapy.
When people talk about the relaxing warmth of an infrared sauna, they are usually talking about far infrared heat. Far infrared systems are commonly used for relaxation, recovery, healthy sweating, circulation support, cardiovascular conditioning, and daily wellness routines.
Most infrared saunas sold today rely heavily on far infrared technology because it creates the comfortable heat experience that made infrared saunas popular in the first place.
If you have ever sat in an infrared sauna and felt a gentle, penetrating warmth at temperatures lower than a traditional sauna, you were likely experiencing far infrared energy.
The Easiest Way to Understand the Difference
Imagine standing near a campfire.
You experience two things at the same time.
You see the light coming from the flames, and you feel the warmth coming from the fire.
While the comparison is not perfect scientifically, it helps illustrate the basic idea. Near infrared behaves more like the light portion of the experience. Far infrared behaves more like the heat.
Both originate from the same part of the electromagnetic spectrum, but they create very different experiences.
This distinction helps explain why manufacturers often combine both technologies in a single sauna.
Why Full Spectrum Saunas Use Both
A full spectrum sauna typically combines near infrared, mid infrared, and far infrared wavelengths into a single system.
The goal is flexibility.
Far infrared provides the heat experience most people expect from an infrared sauna. Near infrared introduces additional light-based technology often associated with photobiomodulation applications. By combining multiple wavelengths, a full spectrum sauna allows users to access multiple infrared technologies within a single unit.
Many buyers choose full spectrum systems because they prefer having access to both heat therapy and near infrared technology rather than choosing one or the other.
Related Reading:
https://celebrationsaunas.com/what-is-full-spectrum-technology/
Which One Is Better?
This is where many sauna buyers get confused.
Near infrared and far infrared are not competing technologies. They are complementary technologies.
Far infrared is designed to create the heat experience that most people associate with infrared sauna therapy. Near infrared is included because some buyers are specifically interested in photobiomodulation, cellular wellness, recovery support, and light-based applications.
The better question is not which wavelength is superior.
The better question is whether your goals are focused primarily on heat therapy or whether you also want access to near infrared technology.
For many people, a far infrared sauna provides everything they need. For others, the addition of near infrared technology makes a full spectrum sauna worth the extra investment.
Who Should Consider Near Infrared Technology?
People interested in photobiomodulation, recovery-focused wellness routines, skin wellness applications, and cellular energy research often find near infrared technology appealing.
People who simply want the relaxing heat experience of an infrared sauna may be perfectly satisfied with a traditional far infrared system.
Neither choice is wrong.
The right choice depends on your interests, budget, and how you plan to use your sauna.
What This Means for Sauna Buyers
The most important thing to understand is that near infrared and far infrared serve different purposes.
Far infrared creates the heat that most people associate with infrared sauna therapy. Near infrared provides a light-based technology commonly associated with photobiomodulation and cellular wellness applications.
This is why many premium sauna systems combine both.
Understanding the difference makes it much easier to decide whether a far infrared sauna, full spectrum sauna, or hybrid sauna is the right fit for your goals and lifestyle.
Research & References
Photobiomodulation or Low-Level Light Therapy
Hamblin MR.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5523874/
Proposed Mechanisms of Photobiomodulation
de Freitas LF, Hamblin MR.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5215870/
Infrared Radiation and Biological Effects
National Center for Biotechnology Information (NCBI)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4745411/
Sauna Health Benefits
Harvard Health Publishing
https://www.health.harvard.edu/blog/sauna-health-benefits-202404033030
Clinical Effects of Regular Dry Sauna Bathing: A Systematic Review
Hussain J, Cohen M.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5941775/
Related Reading
How Does an Infrared Sauna Work? Understanding Infrared Heat Therapy
https://celebrationsaunas.com/how-does-an-infrared-sauna-work/
What Is Full Spectrum Sauna Technology?
https://celebrationsaunas.com/what-is-full-spectrum-technology/
What Is Near Infrared Sauna Therapy?
https://celebrationsaunas.com/what-is-near-infrared-sauna-therapy/
What Is Photobiomodulation?
https://celebrationsaunas.com/what-is-photobiomodulation/
What Is Red Light Therapy?
https://celebrationsaunas.com/what-is-red-light-therapy/
Full Spectrum vs Far Infrared Sauna: Is Full Spectrum Worth It?
https://celebrationsaunas.com/full-spectrum-vs-far-infrared-sauna/
What Type of Sauna Is Right for Me?
https://celebrationsaunas.com/what-type-of-sauna-is-right-for-me/
What Is a Sauna? A Complete Guide to Sauna Types, Benefits, and How Saunas Work
https://celebrationsaunas.com/what-is-a-sauna/
72 Benefits of Regular Sauna Use
https://celebrationsaunas.com/72-benefits-of-regular-sauna-use/