“Low EMF” appears on almost every infrared sauna listing. It responds to a real concern, since you sit close to electric heaters for 20 minutes or more, but the claims are rarely presented in a way you can compare.
This article explains how to read an EMF claim. For the rest of the buying decisions, start with the infrared sauna buying guide.
Short answer: an EMF number means little without three details: where it was measured, how, and by whom. Ask for those before you pay extra for “lower EMF.”
What’s being measured
Electric heaters create magnetic fields at the power frequency (60 Hz in the U.S.). Sauna brands usually report the magnetic field in milligauss (mG).
For context, the ICNIRP’s 2010 guidelines set a general-public reference level of 200 µT for 50/60 Hz magnetic fields. That’s 2,000 mG. Sauna marketing figures are typically in single digits, far below that.
What brands claim
| Cabin | EMF claim (per listing) |
|---|---|
| Dynamic Barcelona | “Low EMF (under 8 mG)” |
| Dynamic Barcelona Elite | “Ultra low EMF (under 3 mG)” |
| Finnmark FD-3 | Finnmark describes independently verified low-EMF performance |
| Sunlighten Solo | Sunlighten says it was independently tested for ultra-low EMF |
Three questions for any EMF claim
- Measured where? Readings drop quickly with distance. A number taken a foot away from the panel isn’t comparable to one taken at the panel’s surface.
- Measured how? Which meter, at what frequency, with the heaters on full power?
- Measured by whom? A report from an independent lab carries more weight than a figure on a product page.
Here’s what the spec sheet won’t tell you: two brands can both say “under 3 mG” and mean different things. Without the distance, the numbers aren’t comparable.
How much it should matter to you
My rule of thumb: if EMF is a priority, ask for the test report and choose the brand that sends one. If it isn’t, don’t pay a large premium for a lower number you can’t verify.
How the wording varies
Most listings in our catalog use an EMF phrase with no number behind it:
| Product | Wording (per listing) |
|---|---|
| Dynamic Andora | “Low-EMF” far infrared carbon panels |
| Sunlighten Signature I and II | Low EMF design |
| Golden Designs Nora | “Near-zero-EMF” infrared panels |
| HigherDOSE Sauna Blanket | Low-EMF design |
| Sunlighten Solo | Ultra-low EMF, “lower than 95% of common household items” |
From manufacturer and dealer listings, checked September–October 2026.
“Low”, “ultra-low”, and “near-zero” have no shared definition. One brand’s “low” could be another’s “ultra-low”. Only the two Dynamic Barcelona listings give a figure at all.
The Sunlighten Solo claim compares the product with household items. That is more specific than an adjective, but it still isn’t a measurement. Ask which items, at what distance.
Run the numbers on the one pair with figures
The Barcelona is listed at under 8 mG and the Barcelona Elite at under 3 mG. Against the ICNIRP general-public reference level of 2,000 mG:
- 8 mG is 0.4% of the reference level
- 3 mG is 0.15%
Both are far below it. The step from 8 to 3 looks large on a product page. Measured against the guideline, it is a move from a very small number to a slightly smaller one. That is our arithmetic, and it assumes both figures were taken the same way, which the listings don’t confirm.
A safety mark is not an EMF test
Listings often mention ETL or similar certification near an EMF claim. Those marks cover electrical safety. They don’t state or certify a magnetic field level. Read them as two separate things.
What a useful test report contains
- The lab’s name and the date.
- The meter used.
- The distance from the heater for each reading.
- Readings at seat, back, and floor positions with all heaters on.
- The model number tested.
If a brand sends that, you can compare it with another brand’s report. If it sends a single number, you can’t.
To compare EMF claims alongside price and warranty, see our infrared sauna comparison.
Bottom line: a credible EMF claim comes with a distance, a method, and a tester. Ask for all three.
Sources
- ICNIRP, “Guidelines for Limiting Exposure to Time-Varying Electric and Magnetic Fields (1 Hz to 100 kHz),” 2010: icnirp.org
- EMF claims: Dynamic Saunas, Finnmark, and Sunlighten product listings via Amazon, Select Saunas, and the manufacturers, checked October 1, 2026
- EMF wording: Dynamic Andora, Sunlighten Signature, Golden Designs Nora, and HigherDOSE listings, checked September–October 2026