THE SCIENCE OF
HEAT ABSORPTION
Why we use Calorimetry to measure the true power of your sauna.
Infrared Heaters: Measuring What Matters
In the sauna industry, the standard metric for performance is usually air temperature. While a warm cabin is important, it is not the defining factor of a successful infrared session.
Infrared therapy is distinct from traditional sauna bathing because it relies on radiant energy, not hot air. The goal is not merely to heat the space around you, but to deliver light energy that your body can absorb and convert into heat.
At High Tech Health, we believe that to create a superior heater, we must measure absorption, not just ambient temperature. To do this objectively, we turn to the science of Calorimetry.
The Perfect Proxy: Why We Test on Water
To understand how a heater will perform for you, we need a test subject that mimics human biology.
The human body is approximately 70% water. Water has a unique “Specific Heat Capacity,” meaning it requires a specific, consistent amount of energy to raise its temperature. This makes water the perfect objective standard for testing infrared efficiency.
The Logic is Simple: If a heater can transfer energy efficiently into a beaker of water, it proves it can penetrate human tissue. If the heat bounces off the water or merely warms the air around the beaker, the absorption rate will remain low.
THE HEAD-TO-HEAD TEST
THE RESULT: 34% GREATER ABSORPTION
Change in water temperature over 15 minutes. Our heaters transfer energy more efficiently.
From the lab to the Cabin: What This Means For You
Sweat Sooner
Because our heaters transfer energy more efficiently, your core body temperature begins to rise almost immediately. You spend less time waiting to warm up and more time in the therapeutic range.
Sweat More
A higher rate of absorption triggers a stronger metabolic response. This leads to a heavier, more productive sweat, maximizing the detoxification benefits of your session.
Deeper Heat
Inefficient infrared can feel stifling—like hot air sitting on top of your skin. With High Tech Health, users often describe the heat as “penetrating.” It is the sensation of being warmed from the inside out, which is the hallmark of true infrared therapy.
Transparency Guarantee: Check our work!
- Both saunas are heated to an air temperature of exactly 100° F so both saunas easily have their heaters warmed up and working.
- Two beakers of water are filled with exactly one liter of water at the same temperature.
- Each beaker of water is placed against the backrest.
- A high-precision thermometer records the change in temperature of the water over 15 minutes.
Additionally in this test, both saunas are powered from the same electrical circuit, on the same day, and both have their vents closed.
Ready to Take Control of your Wellness?
High Tech Health International is dedicated to bridging the gap between infrared sauna industry claims and hard science. All of our claims are directly supported by real research.
Science Fact, not Science Fiction. Your health deserves nothing less.
See The Difference
Check out our entire line of infrared saunas recommended by more doctors and health practitioners than any other.
The Transcend Heaters
We’ve designed the best infrared heaters in the industry. Most infrared, Most Effective, Lowest EMF. They Transcend the rest.