JNH's number is lower, so why does Clearlight score higher on EMF?

Because a magnetic field falls off with distance. JNH's 0.32 mG is read at the center of a heater; Clearlight's under-0.8 mG is verified at all positions including the seat. We credit the figure measured where your body is, not the smaller number from a favorable spot.

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Clearlight Premier vs JNH Joyous

The JNH Joyous is the better raw value and a perfectly honest far-infrared cabin, but on EMF the Clearlight Premier is the one whose number you can actually trust at the seat. If low EMF is your reason for buying, position beats a smaller figure measured in the wrong place.

Both are far-infrared cabins, and both cite EMF testing. The distinction is position. Clearlight publishes independent results below 0.8 mG at all positions; JNH's lower-looking 0.32 mG is measured from the center of a heater, not where you sit.

Clearlight Premier IS-1

7.8

Strong

JNH Lifestyles Joyous 2-Person

5.4

Limited

$5,299	Price	$2,499
0.8 mG at body	Verified EMF	0.32 mG (unverified)
far	Spectrum	far
6 carbon-ceramic hybrid (True Wave) + floor	Heaters	7 carbon fiber + floor
listed	ETL/UL	none published
cabin (1-person)	Type	cabin (2-person)

Score breakdown

9.0	Verified EMF30%	2.0
6.0	Spectrum Honesty20%	6.0
10.0	Heat & Coverage15%	10.0
5.0	Value20%	8.0
9.0	Safety & Build15%	3.0

FAQ

JNH's number is lower, so why does Clearlight score higher on EMF?: Because a magnetic field falls off with distance. JNH's 0.32 mG is read at the center of a heater; Clearlight's under-0.8 mG is verified at all positions including the seat. We credit the figure measured where your body is, not the smaller number from a favorable spot.