What counts as low EMF in an infrared sauna?

There's no official standard. Brands mostly aim for the magnetic field to read under about 3 mG where you sit, a figure that appears in no international safety guideline. For scale, the international public-exposure guideline (ICNIRP 2010) is 2,000 mG at 50 and 60 Hz, and the WHO puts the average home at about 0.7 mG in Europe and 1.1 mG in North America. A sauna reading of a few milligauss at the seat is far below the ICNIRP guideline, though it can still be several times a typical home's background.

Is EMF from an infrared sauna dangerous?

The evidence doesn't show harm at these levels. The WHO's position is that current evidence does not confirm health effects from low-level fields, though it says gaps in knowledge remain and need further research. IARC classifies extremely-low-frequency magnetic fields as possibly carcinogenic (Group 2B) on the strength of a childhood-leukaemia association that the WHO says is not strong enough to be considered causal. Buying a low-EMF sauna is a reasonable precaution if it matters to you, but it isn't a fix for a demonstrated risk.

What is the difference between EMF and ELF in sauna marketing?

In sauna marketing, "EMF" usually means the magnetic field, measured in milligauss (mG), and "ELF" usually means the electric field, measured in volts per metre (V/m). Both are actually extremely-low-frequency fields from the 60 Hz household current running through the heaters. A brand that publishes only one of the two has told you half the story. RF, the radio-frequency field from Bluetooth and Wi-Fi, is a third, separate measurement.

Why don't sauna EMF numbers compare across brands?

Because the distance changes everything. A magnetic field falls off steeply as you move away from its source, so a reading taken 2 inches from a panel and one taken 3 feet away describe very different things. In this guide, Sunlighten measures at the seated torso, Dynamic at 2 to 3 inches from the panels, Sun Home at one to three feet from a heater, and Clearlight on the heater surface, while Clearlight's seated figure gives no distance. Compare numbers only when you know the distance behind each.

How do I measure EMF in my own sauna?

Use a meter that separates magnetic, electric and RF fields, such as the TriField TF2 (about $186). Run the sauna at full heat, sit where you normally sit, and take readings at your lower back, your chest and your head. Note the distance from the nearest heater for each. Do it in the first week so a disappointing number still falls inside the return window.

Sauna · Buyer's guide

Best low-EMF infrared saunas (2026)

Last updated October 2026 · EMF claims and prices checked against each manufacturer's own pages

Every infrared sauna on the market calls itself low EMF. That makes the phrase useless on its own, so this guide ranks the claim rather than the cabin. We read what each brand actually publishes: a number or an adjective, a named lab or none, a stated measurement distance or none. Then we picked the best sauna at each level of evidence. Most brands, including some expensive ones, publish no figure at all.

What "low EMF" actually means

An infrared heater is a resistive element on 60 Hz household power, and it makes two fields: the voltage on the element creates an electric field, and the current flowing through it creates a magnetic field. The magnetic field is measured in milligauss (mG), and it's what most brands mean by "EMF." The electric field is measured in volts per metre (V/m), and it's what most mean by "ELF," although both are extremely-low-frequency fields. A third measurement, RF, covers the radio signal from a Bluetooth speaker or Wi-Fi controller.

Three things decide whether a published number means anything:

Distance. Fields fall off steeply as you move away from the source. A reading with no distance attached can't be compared with anything, including the next brand's reading.
What was tested. A single heater on a bench is not a finished cabin with wiring, a controller and a speaker.
Who tested it. A named independent lab with a dated report beats an unattributed figure in a spec table.

For scale: the international public-exposure guideline (ICNIRP, 2010) for 50 and 60 Hz magnetic fields is 2,000 mG. The WHO puts the average home at about 0.7 mG in Europe and 1.1 mG in North America. The figure many brands chase, roughly 3 mG at the seat, appears in no international safety guideline; it's an industry benchmark, not a limit. The building-biology guidelines some buyers follow are far stricter, setting the no-concern level for a sleeping area as low as 0.2 mG. Every figure published for the saunas in this guide is far below the ICNIRP guideline. The question is how close each gets to the stricter targets, and how sure you can be.

How we evaluated

EMF evidence came first. We read each brand's product page, its EMF page and any linked lab report, and sorted the claims into three levels: a figure with a named lab and a stated distance; a figure with one of those missing; and wording with no figure at all. Within each level we judged the sauna on the criteria in our Methodology: heater type and spectrum, build and wood, warranty, and the electrical install. We have not measured these saunas ourselves; where we say a figure was measured, we name who measured it.

Thermal Protocol may earn a commission if you buy through links on this page. This does not affect our rankings or picks.

The picks

Best documented overall

Sunlighten · mPulse Believe 2-Person

Price on request; Sunlighten publishes no prices

EMF evidence: Finished cabins measured where you sit, in a full report from a named lab: Vitatech recorded 0.16 mG at the seated torso in the mPulse Believe (report VTE-3200, tested November 2020, finalised January 2021). Electric fields were measured too, but only the magnetic readings are tabulated.

The strongest EMF evidence we found, and the reason Sunlighten leads a list where it earns us nothing. Its Vitatech report tested whole cabins model by model, with the sensor where a seated body would be, not a lone heater on a bench. The five models tested ranged from 0.11 mG (Amplify II) to 0.86 mG (Signature IV), with the mPulse Believe at 0.16. Two limits. The report gives numbers for the magnetic field only, saying of the electric field just that its peaks were well below the standards it applied. And the test dates from 2020; ask Sunlighten whether the cabin you're quoted today has been re-tested. The current Believe is a two-person cabin with 6 far-infrared, 5 mid-infrared and 4 red/near-infrared heaters, 51.7″ × 47.6″ outside and 79″ tall, 494 lbs in basswood or 551 lbs in eucalyptus. It needs a dedicated 120V/20A circuit (NEMA 5-20P). There's no list price: you book a consultation for a quote. Sunlighten is not an affiliate partner of ours.

Best documented with a published price

Clearlight · Sanctuary 1 (Basswood)

$6,899 sale (list $7,499) through a November 30 promotion, verify at merchant

EMF evidence: The full, dated Vitatech report is public, with distances and both magnetic and electric readings, but it's a 2016 test of one 240V heater, not a cabin.

Second because you can read the whole lab report, which no other priced brand here lets you do. Clearlight's EMF page quotes figures: under 1 mG measured directly on the heater, an average electric field of 3.4 V/m, and "virtually 0 mG" in the seat. Look behind them, though, and the lab report Clearlight links is a September 2016 Vitatech test of a single 600-watt, 240-volt heater, not a Sanctuary cabin, and the Sanctuary 1 runs on 120 volts. The same report records electric-field readings up to 17.2 V/m at one metre, well above the 3.4 V/m average the EMF page quotes. The seated figure has no stated distance or lab. So it's a heater test standing in for a cabin test, like Sun Home's below, but one you can check line by line. The Sanctuary 1 also wins on the install: it draws 14.6 amps and plugs into a standard 120V/15A outlet (NEMA 5-15P), one of two cabins here that don't need a 20A circuit and the only full-spectrum one. Two 500W full-spectrum heaters in front, far-infrared on the back, sides, calves and floor. The limited lifetime warranty covers parts for life but labor only for an initial period. Clearlight is not an affiliate partner of ours.

Best two-person cabin with a published price

Sun Home · Equinox 2-Person Full-Spectrum

$6,099 sale (list $6,799), verify at merchant

EMF evidence: A summary of Vitatech testing (report VTE-3534) of a heating element under load: 0.6 to 4.0 mG at one foot, 0.3 to 0.9 mG at three feet. Magnetic field only; the full report isn't public.

The best-documented two-person cabin you can price without a sales call. Sun Home publishes a summary of Vitatech's testing with the report number and a range at three distances, rather than one flattering number. Read it for what it is, though: a summary Sun Home had prepared, which says itself that it doesn't replace the original reports; a test of a heating element under load, not a finished cabin, the same gap we hold against Clearlight; and no electric-field figure. The product page shows a "<0.5mG" badge without saying how it relates to that range. You sit closer than three feet to the back-wall panels, and at one foot the range runs up to 4.0 mG, so measure in the seat if the number is why you're buying. The cabin itself is a strong all-rounder: two full-spectrum plus four far-infrared heaters, 165°F max, eucalyptus interior, and a 7-year warranty. It needs a dedicated 120V/20A GFCI circuit (NEMA 5-20 plug), and the footprint is 45.9″ × 50.9″.

Shop the Equinox on Sun Home

Read our full Sun Home Equinox review for the full spec breakdown.

Best one-person cabin under $5,000

Sun Home · Solstice 1-Person

$4,999 sale (list $5,599), verify at merchant

EMF evidence: Product page lists "<0.5mG" with no distance; Sun Home's Vitatech summary covers a heating element, not this or any named cabin.

The lowest-priced way into Sun Home's EMF disclosure, in a 39.8″ × 37.8″ footprint that fits a spare corner. The trade is the spectrum: Solstice is far-infrared only (eight far-infrared heaters, no full-spectrum panels) and tops out at 140°F, against the Equinox's 165°F. For a buyer whose priority is low fields in a small room, that's a fair trade; for one who wants the hottest session, it isn't. Same eucalyptus interior and 7-year warranty as the Equinox, same dedicated 120V/20A GFCI circuit. Before ordering, ask Sun Home whether the Solstice uses the heater type it tested. If not, the Solstice's number is a product-page claim rather than a test.

Shop the Solstice on Sun Home

Best under $4,000

Dynamic · Barcelona Elite 1–2 Person

$3,999, verify at merchant

EMF evidence: A number and a distance (3 to 5 mG at 2 to 3 inches from the panels), but no tester named.

The budget tier is where "low EMF" usually means nothing, and Dynamic is the exception worth knowing about. Its maker, Golden Designs, sorts its saunas into EMF tiers: Low (5 to 10 mG), Ultra Low (3 to 5 mG) and, on some models, Near Zero (under 3 mG). The Barcelona Elite is Ultra Low, and its listing gives the distance too: 3 to 5 mG measured 2 to 3 inches from the panels. A reading taken that close to the panel is near the worst case, which makes it a useful number even though no lab is named. Buy the Elite rather than the plain Barcelona ($3,499), which is the Low rung at 5 to 10 mG. It plugs into a standard 120V/15A outlet (Golden Designs recommends a dedicated one), weighs 250 lbs, and measures 39″ × 36″. Know what it is: a compact far-infrared cabin billed as 1 to 2 people but realistically one, hemlock interior, and a manufacturer-stated 140°F ceiling. Dynamic is not an affiliate partner of ours.

Best portable, with an asterisk

Therasage · Thera360 Plus Portable

$1,428, verify at merchant

EMF evidence: Shielding claimed ("EMF, ELF & RF shielding"); no measured figure published on the product page.

If a fixed cabin isn't an option, the Thera360 Plus is the portable we'd buy, and we've said why in our full review: full-spectrum heat, a bamboo frame instead of vinyl, and a 900W draw on any ordinary outlet. It earns its place on this list for the shielding it's designed around, not for a number, because Therasage doesn't publish one on the product page. That's the asterisk. If low EMF is the reason you're shopping, budget for a meter and measure it yourself in the first week, inside your return window. Setup size is 33″ × 33″ × 46″, it weighs 24 lbs, and it folds away.

Shop the Thera360 Plus on Therasage

Read our full Thera360 Plus review for the full spec breakdown.

What we didn't include

Sun Home Eclipse and Pod. Same maker as two of our picks, but their product pages list "Patented Shielding" where the Equinox and Solstice list a number. Choose them for the red light therapy, not for a published EMF figure.
Health Mate and Almost Heaven. Both describe their products as low EMF ("third-party tested," "near-zero") without publishing a figure we could find.
SaunaSpace. A near-infrared incandescent-bulb sauna, a different heat source from every pick here. Its optional shield is specified against radio frequencies (40 kHz to 40 GHz), not the 60 Hz magnetic field the rest of this guide measures.

Questions to ask before you buy

Which model was tested, and was it the whole cabin or one heater? Ask for the report itself, not a summary of it.
At what distance, and at which seat position? A figure at the heater surface and a figure at three feet answer different questions.
Were the magnetic and electric fields both measured? One without the other is half the picture.
Can you return it if your own meter disagrees? Ask before you order, because a 400-lb cabin is expensive to send back.
What circuit does it need? Of the cabins in this guide, only the Clearlight and the Dynamic run on a standard 15A outlet; the Sunlighten and both Sun Home cabins need a dedicated 20A circuit.

FAQ

What counts as low EMF in an infrared sauna?: There's no official standard. Brands mostly aim for the magnetic field to read under about 3 mG where you sit, a figure that appears in no international safety guideline. For scale, the international public-exposure guideline (ICNIRP 2010) is 2,000 mG at 50 and 60 Hz, and the WHO puts the average home at about 0.7 mG in Europe and 1.1 mG in North America. A sauna reading of a few milligauss at the seat is far below the ICNIRP guideline, though it can still be several times a typical home's background.
Is EMF from an infrared sauna dangerous?: The evidence doesn't show harm at these levels. The WHO's position is that current evidence does not confirm health effects from low-level fields, though it says gaps in knowledge remain and need further research. IARC classifies extremely-low-frequency magnetic fields as possibly carcinogenic (Group 2B) on the strength of a childhood-leukaemia association that the WHO says is not strong enough to be considered causal. Buying a low-EMF sauna is a reasonable precaution if it matters to you, but it isn't a fix for a demonstrated risk.
What is the difference between EMF and ELF in sauna marketing?: In sauna marketing, "EMF" usually means the magnetic field, measured in milligauss (mG), and "ELF" usually means the electric field, measured in volts per metre (V/m). Both are actually extremely-low-frequency fields from the 60 Hz household current running through the heaters. A brand that publishes only one of the two has told you half the story. RF, the radio-frequency field from Bluetooth and Wi-Fi, is a third, separate measurement.
Why don't sauna EMF numbers compare across brands?: Because the distance changes everything. A magnetic field falls off steeply as you move away from its source, so a reading taken 2 inches from a panel and one taken 3 feet away describe very different things. In this guide, Sunlighten measures at the seated torso, Dynamic at 2 to 3 inches from the panels, Sun Home at one to three feet from a heater, and Clearlight on the heater surface, while Clearlight's seated figure gives no distance. Compare numbers only when you know the distance behind each.
How do I measure EMF in my own sauna?: Use a meter that separates magnetic, electric and RF fields, such as the TriField TF2 (about $186). Run the sauna at full heat, sit where you normally sit, and take readings at your lower back, your chest and your head. Note the distance from the nearest heater for each. Do it in the first week so a disappointing number still falls inside the return window.

For the wider market, including saunas we picked for reasons other than EMF, see Best infrared saunas for home. If you're still deciding on the heat source itself, our infrared vs traditional sauna guide covers that, and saunas for apartments covers what fits a rental.