Low EMF Infrared Saunas

Every electric heater produces an electromagnetic field, so every infrared sauna has some EMF; "zero EMF" is a marketing phrase, not a measurement. What a rating should tell you is how much, of which kind, measured where.

• Two fields, two units. The magnetic field is measured in milligauss (mG); the electric field in volts per meter (V/m). Most "low EMF" labels refer to the magnetic field only. A complete report gives both.
• Where it is measured. A reading taken at the bench or backrest, where you sit, is the one that matters. A reading taken three feet from the heater will always look low. Ask for the distance.
• The tiers. "Low EMF" and "ultra low EMF" are sellers' labels, not standards. One retailer that ranks for this term (Sun Valley Saunas, not affiliated with us) buckets its cabins as 5 to 10 mG for low and 3 to 5 mG for ultra low. Other sellers quote figures under 1 mG at the backrest. Without the number and the distance, the tier label alone is not comparable.
• What drives the number. Heater type and placement (carbon panels behind and beside the seat, ceramic emitters, or a single far-side heater), how the wiring is routed and shielded, and how much current the unit draws. A fold-flat unit at 1,000 to 1,500 W draws less than a 2 kW cabin, which is a reason the small units can rate well, but it is not itself a measurement.
• Not the same as radio frequency. Wi-Fi and Bluetooth controls are a separate, radio-frequency question; our units here have none.

We do not make claims about what any level of EMF does or does not do to you. The point of the rating is that it is a number you can compare, and the point of this page is to tell you which number to ask for.

Durasage fold-flat far infrared

• Durasage Ultra Low EMF Portable Infrared Sauna, $599.95: one seat, standard outlet, folds flat; the only unit here the manufacturer rates "ultra low".
• Durasage Silver Large Portable Low EMF Infrared Sauna, $599.95: the large one-person tent with an air ionizer; also in Copper and Light Pink at the same price.
• Durasage 1-Person Full Size Infrared Sauna, $599.95: a full-size enclosure with low EMF heaters, 1,000 W, folds flat.
• Durasage 2-Person Full Size Infrared Sauna, $649.95: the two-seat version, 1,500 W. The only two-seat low EMF unit here.

SaunaBox

• SaunaBox Pulse PRO Infrared Sauna with Red Light Therapy, $699: far infrared on low EMF heaters, rated 1 to 2, with red light panels built in; also on Red Light Saunas.
• SaunaBox Solara Full Spectrum Infrared Sauna, $2,799: the one cabin here, full spectrum (near, mid and far) on a standard outlet, rated low EMF, 1 to 2 people. It is being published to the store and appears in the grid as soon as it is.

Every unit has a 1-year warranty handled through us. The hemlock cabins from Medical Sauna and Durasage on Infrared Saunas have no EMF rating on file, so they are not on this page; we are asking both manufacturers for readings. All the fold-flat units here also appear on Portable Saunas.

"Best low EMF sauna" is a question about evidence, so judge every seller, including us, by whether they can answer these:

1. Which field was measured, and in what unit? Magnetic in mG, electric in V/m, or both.

2. At what distance and position? At the backrest or seat, or a meter away.

3. Measured by whom, with what meter? The manufacturer, an independent lab, or a reviewer with a consumer meter.

4. What is the heater type and where does it sit? Carbon panel, ceramic or a single far-side emitter; panels at your back are the ones that count.

5. Is the unit grounded, and is the wiring shielded?

6. What are the wood, glue and finish? Heat raises off-gassing from some materials; this is a separate question from EMF, but the same careful buyer asks it.

What we can answer today for the units on this page: the rating comes from the manufacturer; the heaters are far infrared panels on a standard 120 V outlet; the Durasage Full Size units draw 1,000 W and 1,500 W; there are no Wi-Fi or Bluetooth controls. What we are collecting: the mG figure, the distance and the method for each unit from Durasage and SaunaBox, which we will print in the compare table as they arrive. If a measured figure matters to your decision, ask us before ordering and we will tell you what the manufacturer has supplied so far rather than guess.

All seven units plug into a standard 120 V, 15 A outlet; give the 1,500 W unit its own circuit rather than sharing with a space heater or hair dryer. Fold-flat far infrared units warm up in 5 to 10 minutes and most people run 20 to 40 minute sessions, starting shorter. On the shower question that comes up with infrared saunas: there is no rule against it, but let your body cool for a few minutes first and then rinse with lukewarm water, mainly so you are not stepping from heat into a cold shower while still flushed.

We do not stock a low EMF sauna blanket; our blankets are red light blankets, which are a different product. Freight is free to domestic USA addresses in the lower 48; Alaska, Hawaii and international by quote. 30-day returns on eligible products in original condition. Every unit is new, with the 1-year manufacturer warranty handled through us.