Infrared sauna · Compare
Sunlighten mPulse Aspire vs Medical Saunas Medical 4
The mPulse is the clear pick: its full spectrum is real and its EMF, while position-contested, at least has a named lab behind it. The Medical 4 relabels far-infrared panels as full spectrum and prints an EMF number with no report, which is exactly the marketing our scoring is built to catch.
Both are marketed as full spectrum, but only one backs it. The Sunlighten mPulse delivers near-infrared from real 660 and 850 nm LEDs and publishes a third-party EMF report; the Medical 4's full spectrum rests on carbon and ceramic panels, and its headline 0.03 mG EMF claim is implausible and unsourced.
| $6,500 | Price | $5,449 |
| 1 mG (unverified) | Verified EMF | 0.03 mG (unverified) |
| full (real NIR) | Spectrum | full (no NIR emitter) |
| 6 carbon (SoloCarbon) + LED NIR + floor | Heaters | 6 carbon + ceramic |
| listed | ETL/UL | none published |
| cabin (1-person) | Type | cabin (2-person) |
Score breakdown
| 2.0 | Verified EMF30% | 0.0 |
| 9.0 | Spectrum Honesty20% | 0.0 |
| 10.0 | Heat & Coverage15% | 7.0 |
| 2.5 | Value20% | 5.0 |
| 9.0 | Safety & Build15% | 3.0 |
FAQ
- Is the Medical 4's 0.03 mG claim credible?
- No. An 0.03 mG reading is implausibly low for a cabin heater and comes with no published third-party report or stated position. We treat it as an unsourced marketing figure and cap the EMF dimension accordingly.