The Skeptical Read
How to read infrared sauna specs, from low-EMF to chromotherapy
Panel coverage, a measured EMF figure and power draw decide an infrared cabin. Full-spectrum is useful but oversold, and chromotherapy is mood lighting.
By Adam Bognar, Editor
Judge an infrared sauna by panel coverage, a measured EMF figure and power draw, and treat most other claims as vocabulary. We've read the marketing against the evidence. Heart-failure trials of gentle-temperature far-infrared protocols have reported improved walking distance, so the category is legitimate. Its marketing has evolved faster than its evidence.
Three specs decide whether an infrared cabin delivers
Panel coverage matters most, meaning total emitter area and placement. Calf and bench panels, along with floor panels, give front-of-body coverage, which separates good cabins from boxes with two rear heaters. Sun Home's Luminar shows what that coverage looks like. It runs far-infrared panels at calf height and under the floor, and four full-spectrum heaters face the bench from the glass.
Next, look for verified EMF/ELF numbers. A low-EMF claim isn't meaningful without a third-party-measured milligauss figure at the bench. Then check power draw against your circuit, since a 120V/15A cabin plugs in anywhere and you'll need electrical planning for 20A and 240V units.
Outside
It's thick double-pane glass. Sun Home says the tint adds privacy and keeps the sun from fading the cedar inside.
Dark aluminum boards wrap all four walls, and Sun Home lines the room inside with Canadian red cedar.
It's tinted glass hung from its back edge, with a 24-inch opening and a cedar bar to pull it shut from inside.
An LED strip under its edge lights the walls at night. Sun Home's manual says to keep snow from piling up on it.
Its 8-foot cord leaves the roof at the back wall and ends in a NEMA L6-30 twist-lock plug. It draws 7,200 watts on a dedicated GFCI circuit, and skipping the licensed electrician voids the warranty.
Inside
Four line the back wall and two the right end, each behind its own contoured backrest. The curved slats keep you off the heater and let its warmth through.
They face the benches, so the heat reaches you from the front as well as from behind. Sun Home counts ten full-spectrum heaters in all.
Three sit behind slats under the benches, facing your calves. The other two lie flat under the floor grates.
The long one runs the back wall and the short one the right end, both open underneath on slatted legs. The cabin seats five.
Strips along the backrests and under the seats add accent light. Sun Home's app runs the lights and the heat over 2.4GHz Wi-Fi, and music plays over Bluetooth or from a USB stick.
It sets the temperature from 90 to 170°F in 5-degree steps and has ports to charge a phone. One button switches between the accent strips inside and the lights outside.
Sit back and most of the front is window. Sun Home quotes 15 to 20 minutes to heat up, or an hour and more below 40°F.
We built this model from Sun Home's 3D tour and spec sheet, so small details can differ from the sauna that arrives.
Where to buy
Clearlight (Jacuzzi) Infrared Saunas
Clearlight Sanctuary 2 Full Spectrum Infrared Sauna
Sun Home Saunas Infrared Saunas
Sun Home Equinox 2-Person Full-Spectrum Infrared Sauna
Maxxus (Golden Designs) Infrared Saunas
Maxxus 3-Person Near-Zero EMF Far Infrared Sauna MX-K306-01-ZF
Clearlight Sanctuary 2 Full Spectrum Infrared Sauna. Clearlight (Jacuzzi) photography.
See the specifications and priceBrands oversell full-spectrum and smart controls
Full-spectrum cabins add near- and mid-infrared emitters to the far-infrared core, which widens the wavelengths you receive, and near-infrared overlaps with red-light-therapy research. Far-infrared still does the deep-sweat work, so treat full-spectrum as an optional upgrade. Smart controls get the same treatment. Programs and apps keep you coming back, which has real value, though they heat the same panels.
Where to buy
Sunlighten Infrared Saunas
Sunlighten mPulse Believe
“Full-spectrum is done properly here, and it pays off if you'll use every band.”
Chromotherapy and detox claims mostly decorate the listing
Chromotherapy is pleasant colored LED mood lighting with little evidence behind it, and nearly every cabin has it. Proprietary heater names and detox claims fall in the same harmless family as gemstone-infused surfaces, and they shouldn't decide the purchase. When two cabins differ only in vocabulary, buy the cabin with more measured panel area and the better warranty.
Where to buy
Clearlight (Jacuzzi) Infrared Saunas
Clearlight Premier IS-2 Far Infrared Sauna
Sun Home Saunas Infrared Saunas
Sun Home Solstice 2-Person Infrared Sauna
“A dedicated 120V/20A outlet runs this two-person infrared cabin.”
Common questions
- Does low-EMF matter in an infrared sauna?
- There isn't strong evidence of harm at the field strengths infrared cabin heaters produce. If low-EMF matters to you anyway, look for a third-party-measured milligauss figure at seating position, which several reputable brands publish. Treat an unmeasured low-EMF claim as decoration.
- Is full-spectrum infrared worth the extra money?
- Not for the main use case. Full-spectrum infrared adds near- and mid-infrared wavelengths, which overlap with red-light research and shallower tissue effects. They're nice to have, and a well-built far-infrared cabin covers the sweat-driving, clinically studied core for less.
Sources
- 1.Far-infrared saunas for treatment of cardiovascular risk factors. Canadian Family Physician, 2009.
- 2.Waon Therapy for Managing Chronic Heart Failure: Results From a Multicenter Prospective Randomized WAON-CHF Study. Circulation Journal, 2016.
- 3.Sauna use as a lifestyle practice to extend healthspan. Experimental Gerontology, 2021.
We review from makers’ documentation, owner reports and published research. How we choose products and write reviews.
