Radiant Therapy Saunas

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Brand	Where Made	Heater Type	Radiance* Proximity Micron Range Efficiency	Infrared Overall	Comments
	USA	Ceramic FIR plate	High Excellent 2 – 10+ micron 96%	Excellent ******	Best sauna available. Patented voltage reduction selectively cools emitters to produce longer wave far-infrared. 10-12 premium concave ceramic emitters at 164-watts. (7 emitters on solo unit.)
	China	Ceramic FIR plate	High Excellent 2 – 10+ micron 96%	Very Good *****	Comfortable heat, good construction. Excellent choice for a value sauna that works well. 10-12 concave ceramic emitters at 164 watts. (6 emitters on solo unit).
Sauna Ray	Canada	Ceramic FIR plate	High Good 2 – 10+ micron 96%	Very Good *****	Excellent heaters but non-optimal placement.
Saunacore	Canada	Ceramic FIR plate	High Good 2 – 10+ micron 96%	Very Good *****	Uses one plate per canister at higher wattage, two plates at half wattage would be much better.
	China	Carbon	Average Average 5 – 10+ micron 82%	Average ****	Our value pick for a carbon sauna that works well.
Far North LUX Health Mate High-Tech Health	China	Ceramic Rod	High Good 2 – 5.5+ micron 78 - 84%	Average ***	These saunas are inexpensive to produce and roughly equivalent in performance. Exhausting marketing Hype.
Cedrus	USA	Ceramic coating/ aluminum plate	Average Average 4 – 10+ micron ~82%	Average ***	Limited infrared dispersion but better than most carbon units
Sunlight Sunlife Gaia Crystal Vital Saunatec Finnleo Helo Harmony Polar West Coast East Coast Ohio Sizzlin InfraSun LUX	China	Carbon	Poor Poor 5.5 – 10+ micron 70 - 80%	Average ***	These saunas all are roughly equivalent. All have very low Radiance (amount of infrared generated per unit area) and poor Proximity (percentage of the infrared that actually hits the body. In general the smaller saunas work better than the larger saunas by bringing the heater closer to the body, which mitigates some of the proximity problem. Most of these brands are infamous for Bad Science and phenomenal Hype.
Clearlight	China	“Carbon Ceramic”	Poor Poor 5.5 – 10+ micron 80%	Average ***	One of the first to use this heater, nylon panels over carbon felt and ceramic dust. Older units were better (like Cedrus)

*Terms Used: Radiance is the amount of infrared produced by the heater surface, usually defined as watts per unit measure. Proximity means how much of the infrared produced is actually focused on, and reaches, the body. Micron Range is the range of infrared wavelengths emitted from the heater surface. Efficiency is what percentage of the heat produced is infrared.