The Relax Sauna Difference
The Relax Sauna is not like other saunas. It doesn’t rely on ambient air heat, glowing light panels, or vague claims about “infrared wellness.” It’s a medically-recognized FDA approved device, powered by a patented semiconductor chip that emits pure far infrared light in the precise 7–14 micron range — the exact frequency where water molecules in the human body resonate most effectively.
This range isn’t arbitrary — it’s biological truth. It’s the band shared across humans, mammals, and birds — a window of infrared absorption where energy becomes action at the cellular level.
While traditional saunas heat the air and wait for the body to catch up, the Relax Sauna excites your internal water clusters directly, generating measurable thermal movement within minutes — no long preheat, no wasted time.
And here’s what truly sets it apart: The Relax Sauna reaches the 20 W/m² power density required for medical-grade FIR therapy in just 3–4 minutes — and sustains it. Most saunas never reach that threshold. Others spike and fade. Relax stays consistent, session after session.

Hi, I’m Phil Wilson, owner of Relax Saunas of Momentum, proud distributor of the original and best-selling far infrared (FIR) sauna for over 25 years. I’ve spent decades sharing the science and the soul of far infrared therapy — because when you experience the pure, medical-grade FIR energy delivered by the Relax Sauna, you don’t just feel warm… you feel transformed. Let me show you why this technology continues to lead the industry, and how it can elevate your health on a cellular level.
According to research in this field, when water is exposed to far infrared radiation in this specific range, its molecular vibration patterns change, affecting how water interacts with cellular structures. This vibrationally-altered water may move more efficiently across cell membranes, supporting cellular processes and enhancing metabolic function through improved hydration dynamics.