Infrared Saunas Explained: Far, Full Spectrum and Red Light

A full spectrum infrared sauna can get you near, mid and far infrared in one cabin at about 110F to 135F. Here’s what that label actually means inside each brand, and when it is worth the extra $500 to $1,500.

The short answer: every infrared sauna uses far infrared panels to warm your body directly. A full spectrum sauna adds near and mid infrared sources, which might be halogen lamps, dedicated heaters or LED panels depending on the brand. A red light therapy sauna adds visible red LEDs. Most of the research on infrared saunas used far infrared, and a 2009 medical review called manufacturers’ health claims “poorly supported.” Buy full spectrum for the experience, not for proven extra benefits.

Our quick picks

1. 8.4score

   Best overall

   Clearlight Sanctuary 2 Full Spectrum

   Full spectrum on a 120V 20A circuit, with lifetime coverage on the cabin and heaters plus 7 years of labor

   View at Heal With Heat for Clearlight Sanctuary 2 Full Spectrum (opens in a new tab)
2. 8.6score

   Best red light sauna

   Sun Home Saunas Eclipse 2-Person

   Full spectrum plus integrated red light, rated to 165F, cedar interior and the top infrared score on our rubric (8.6)

   View at sunhomesaunas.com for Sun Home Saunas Eclipse 2-Person (opens in a new tab)
3. 7.5score

   Best value full spectrum

   Sunlighten Amplify II (2-Person, Obsidian)

   Full spectrum on 120V 20A for around $5,799 on sale, about $1,500 less than a Clearlight Sanctuary 2

   View at shop-us.sunlighten.com for Sunlighten Amplify II (2-Person, Obsidian) (opens in a new tab)
4. 7.8score

   Best on a standard outlet

   Health Mate Enrich 2

   Plugs into a regular 120V 15A outlet and carries 10 years of labor, the longest labor term we found

   View at healthmatesauna.com for Health Mate Enrich 2 (opens in a new tab)
5. 8.3score

   Best budget

   Backyard Discovery Rylan 2-Person Indoor Infrared (SKU 2504455)

   Cedar far infrared cabin around $1,999 with a signed seat-height EMF report and 5 years on every part

   View at backyarddiscovery.com for Backyard Discovery Rylan 2-Person Indoor Infrared (SKU 2504455) (opens in a new tab)

We broke down the specs on 43 infrared cabins from 13 brands, compared every model line by line, and read each warranty’s fine print. This guide explains the technology first, then the buying traps, then our picks.

How an Infrared Sauna Works

A traditional sauna heats the air, often to 150F to 195F, and the hot air heats you. An infrared sauna uses heater panels that emit infrared radiation, which warms your skin and body more directly while the air stays cooler. Cleveland Clinic puts typical infrared sauna temperatures at 110F to 135F.

That lower air temperature is the main tradeoff. Infrared cabins are easier to wire and cheaper to run, and many people find them more comfortable. But you will not get 180F heat or steam from water on hot stones. If that is what you want, read our infrared vs traditional sauna comparison.

A few infrared cabins push higher. Sun Home rates its Eclipse to 165F and Luminar to 170F, and JNH rates its Ensi+ to 170F. Those are manufacturer ratings.

Near, Mid and Far Infrared

Infrared is the band of light just past what your eyes can see, starting at 780 nanometers. Scientists split it into three bands, according to the international lighting commission (CIE) definitions published by IUPAC:

Sauna brands use “near,” “mid” and “far” loosely, and they rarely publish a spectrum chart for their heaters. So treat the labels as marketing groups, not lab measurements.

Far infrared is what every infrared sauna is built around. It comes from large flat panels on the walls, under the bench and sometimes in the floor.

Near infrared is the shortest wavelength. In saunas it usually comes from small, bright, hot sources: halogen lamps, incandescent-style bulbs, or LED panels.

Mid infrared sits between the two. Brands that claim it usually say a particular heater covers “near, mid and far” at once.

Heater Types Inside Infrared Saunas

Here is what the major brands use, based on their own spec pages:

• Carbon panels: Sunlighten (SoloCarbon), Dynamic and Golden Designs (PureTech carbon on some models), JNH, SunRay and Backyard Discovery.
• Carbon-ceramic panels: Clearlight (True Wave) and Maxxus “Dual Tech” models.
• Halogen near infrared heaters: Sunlighten Amplify, which adds 3 halogen heaters to 5 carbon far infrared heaters (Amplify II store page).
• Incandescent-style bulbs: Sauna.Space (formerly SaunaSpace) uses “FireLight” bulbs, a different design from panel cabins (Sauna.Space).
• LED panels: Health Mate uses a 96-diode near infrared LED panel, JNH’s Tosi uses 5 LED near infrared emitters, and Backyard Discovery’s Rylan adds 660 nm red and 850 nm near infrared LEDs.

Our scoring rubric gives the same small bonus to carbon and carbon-ceramic panels, because both are the mainstream far infrared heaters. We do not rank one above the other, since no brand publishes a head-to-head test.

What “Full Spectrum” Means at Each Brand

There is no standard for how much near infrared a sauna needs before it can be sold as full spectrum. We compared how each maker builds it:

Two takeaways. First, “full spectrum” ranges from two 500W heaters (Clearlight) down to an LED panel (Health Mate, JNH). Those are very different amounts of near infrared energy. Second, a halogen or LED source is not the same as a heater that warms the room. Ask the brand what its near infrared source is and how many watts it draws.

We rank the field in best full spectrum infrared saunas, and the head-to-head is in full spectrum vs far infrared.

Red Light Therapy Saunas and Chromotherapy

Red light in a sauna comes from LED panels, not from the infrared heaters. Manufacturers list wavelengths such as 660 nm (visible red) and 850 nm (near infrared) on the Backyard Discovery Rylan. Sun Home’s Eclipse and Pod and Sunlighten’s mPulse build red light into the cabin. All wavelength figures are manufacturer-reported.

What does the research say? We found no peer-reviewed study testing red light panels inside a sauna cabin, and none of the sources we use supports a health benefit from adding red light to sauna heat. So treat red light as an extra feature you may enjoy, not a therapy you are buying.

Chromotherapy is colored mood lighting. Almost every cabin from Dynamic to Sun Home includes it. We found no evidence that it does anything beyond setting a mood. Some listings blur the line: Costco’s Dynamic pages describe the chromotherapy lighting as having a “red light therapy feature.” Judge it by price: a cabin should not cost much more because of colored lights.

What the Research Actually Supports

Be careful with health claims, because infrared sauna marketing often goes well past the evidence. Here is what peer-reviewed research and major medical institutions say:

• Far infrared and heart failure: a Japanese trial of 149 hospitalized heart failure patients found that supervised far infrared sessions at 140F for 15 minutes, 10 times over 2 weeks, improved walking distance (Tei 2016). Its main endpoint was not met, and this was supervised medical treatment, not home use.
• Infrared claims overall: a 2009 review in Canadian Family Physician found limited moderate evidence for blood pressure and heart failure, weak evidence from single studies for fatigue and obesity, and evidence against claims that infrared lowers cholesterol. It concluded manufacturers’ claims are “poorly supported” (Beever 2009).
• Dry sauna overall: a 2018 systematic review of 40 studies found possible benefits but mostly small studies, with only 3 of 13 randomized trials at low risk of bias (Hussain and Cohen 2018).
• The famous Finnish studies used traditional saunas. The 2015 study linking 4 to 7 sessions a week with fewer fatal heart events followed 2,315 Finnish men using traditional saunas (Laukkanen 2015). It did not measure infrared.
• Weight loss and detox: Cleveland Clinic says sauna weight loss is water. We found no credible source for “detox” claims.

Our position: buy an infrared sauna because you will enjoy using it often. Be skeptical of any brand that sells near infrared, red light or chromotherapy as treatments.

EMF: What “Low EMF” Really Means

Every infrared heater runs on electricity, so every cabin creates some electric and magnetic fields. Nearly every brand markets “low EMF,” but the evidence varies a lot:

• Backyard Discovery links a signed Vitatech report measured about 1.5 feet above the seat of a current Rylan 2-Person: 0.365 mG with heaters on (Vitatech report). That is the best evidence we found.
• Clearlight links two readable Vitatech reports, but they test bare heaters from 2015 and 2016, not a current cabin.
• Sun Home links a summary that shows 0.6 to 4.0 mG at 1 foot from one heater, higher than its “<0.5 mG” headline.
• Golden Designs (Dynamic, Maxxus) quotes 3 to 10 “MG” at 2 to 3 inches from the panels with no report.

All of these are manufacturer-reported or manufacturer-commissioned numbers. Our low EMF sauna guide puts every brand’s exact claim side by side.

Full Spectrum Infrared Sauna Dangers

“Full spectrum infrared sauna dangers” is a common search, and most pages dodge it. Here are the real risks, in order of how much they matter:

1. Heat and dehydration. Heat raises your pulse by 30% or more, and a short session can sweat out about a pint, per Harvard Health. This is the main risk for any sauna.
2. Electrical faults. On September 17, 2026, the CPSC announced Recall No. 26-784: about 41,580 Sauna360 infrared and hybrid saunas and kits in the US, sold under Finnleo, Helo, Radiant Health, Sauna360, Saunatec, Tylo, Tylohelo and Amerec (kits). The infrared panels can short circuit and overheat. Owners should stop using them and request the free in-home repair.
3. Hot, bright near infrared sources. Halogen lamps and bulbs get hot and bright. Follow the manufacturer’s spacing guidance, and do not touch them. We found no published safety study on sauna near infrared lamps for or against.
4. EMF. Brands’ claims vary, and almost none are backed by a seat-level test (see above). We make no health claim either way.

Wiring: 120V Plug-In vs Dedicated Circuit vs 240V

Infrared’s big advantage is power. Most 1 and 2 person cabins run on 120V, while traditional heaters almost always need 240V. But “120V” can mean three different things:

The warranty matters here. Sunlighten and Sun Home void coverage if the sauna is not on a dedicated circuit, and Backyard Discovery excludes damage from extension cords and power strips. Use a licensed electrician for any new circuit, and ask whether your area requires a permit.

Running cost is low. At the US average residential rate of 18.31 cents per kWh (EIA, July 2026), a 1.6 kW cabin running 45 minutes costs about $0.22 per session, or about $34 a year at three sessions a week. Try our sauna running cost calculator with your rate.

Warranty Traps to Watch For

The warranty fine print shows more difference between brands than the heaters do. These are the traps we found most often:

• “Lifetime” that means 7 years. Sunlighten defines lifetime as seven years (Sunlighten warranty), and Sun Home uses the same wording (Sun Home warranty). Clearlight’s indoor lifetime has no year cap (Clearlight warranty).
• Parts only. Sunlighten, Sun Home (after 90 days), Golden Designs, JNH and Backyard Discovery do not pay labor. Clearlight pays 7 years of labor and Health Mate 10 years (Health Mate warranty).
• Short wood coverage. Golden Designs (Dynamic, Maxxus) covers heaters for 5 years but the wood structure for only 1 year (Golden Designs warranty). JNH gives 2 years on heaters and 1 year on wood (JNH warranty).
• No transfers. Most warranties end when the sauna changes hands. Clearlight’s transfers only with written consent.
• Install conditions. Sunlighten and Sun Home void coverage within 5 feet of a water source like a cold plunge or shower.
• Date splits. Sun Home Eclipse and Pod orders placed on or before March 1, 2026 carry only a 1-year, parts-only warranty.

Price Tiers

Here is what infrared cabins cost on October 13, 2026, from our product database:

• Budget (around $1,800 to $3,100): Backyard Discovery Rylan 1, 2 and 4 person, Dynamic models at Costco from around $1,799.99, and SunRay cabins on sale from around $1,998. Mostly far infrared, hemlock or cedar, short to mid warranties.
• Mid-range (around $4,800 to $6,900): Sunlighten Signature and Amplify, Health Mate Enrich, Clearlight Premier IS and Sanctuary 1, JNH Tosi and Sun Home Equinox.
• Premium (around $7,300 and up): Clearlight Sanctuary 2 to 5, Sun Home Eclipse and Luminar, Sunlighten mPulse (quote only) and the HigherDOSE 2-person (around $7,999 plus $899 curbside delivery).

Our Top Infrared Sauna Picks

We ranked every cabin with our scoring rubric, then picked the best fit for each need. Scores are out of 10.

Clearlight Sanctuary 2: Best Overall

The Sanctuary 2 scores 8.4 and pairs full spectrum heat with the strongest written warranty in the premium tier.

• Four carbon-ceramic far infrared heaters plus two 500W full spectrum heaters, 2,250W
• 120V 20A circuit, NEMA 5-20P plug
• Heaters in the floor and at calf level
• Lifetime on cabin, heaters, controls and audio, plus 7 years of labor
• Around $7,299 in basswood at an authorized dealer

Owners give Clearlight 4.4 from 1,688 reviews on Trustpilot, praising build and fast heat-up, but complain about slow repairs. Full details are in our Clearlight review.

View at Heal With Heat for Clearlight Sanctuary 2 Full Spectrum (opens in a new tab)

Sun Home Eclipse 2-Person: Best Red Light Sauna

The Eclipse scores 8.6, the highest of any infrared cabin we rated. It adds integrated red light and app control to full spectrum heat, in a Japanese cedar cabin rated to 165F. The catch is wiring: it needs a dedicated 120V 30A circuit with a locking NEMA L5-30 outlet. At around $10,599, it carries Sun Home’s “limited lifetime” warranty, defined as up to 7 years, with free labor for the first 90 days. See our Sun Home review.

View at sunhomesaunas.com for Sun Home Saunas Eclipse 2-Person (opens in a new tab)

Sunlighten Amplify II: Best Value Full Spectrum

At around $5,799 on sale, the Amplify II is about $1,500 cheaper than a Sanctuary 2. It uses 5 SoloCarbon far heaters plus 3 halogen full spectrum heaters on a dedicated 120V 20A circuit and scores 7.5. The warranty is 7 years on cabinetry and heaters, parts only. Our Sunlighten vs Clearlight comparison shows what that costs you in a repair.

View at shop-us.sunlighten.com for Sunlighten Amplify II (2-Person, Obsidian) (opens in a new tab)

Health Mate Enrich 2: Best on a Standard Outlet

The Enrich 2 plugs into a regular 120V 15A outlet, and Health Mate says no electrician is needed. It has the longest labor coverage we found: 10 years on factory-installed components, plus lifetime on the heater core and wiring and 10 years on the cabin and electronics. Its near infrared comes from an LED panel, not a heater. Around $5,300, score 7.8.

View at healthmatesauna.com for Health Mate Enrich 2 (opens in a new tab)

Backyard Discovery Rylan 2-Person: Best Budget

The Rylan 2-Person is a cedar far infrared cabin around $1,999 on sale (regular $2,299), rated to 150F. It is the only cabin we found with a signed seat-height EMF report, and the warranty covers every part, including the cedar structure and parts shipping, for 5 years (warranty). It needs a dedicated 120V 15A circuit and scores 8.3.

View at backyarddiscovery.com for Backyard Discovery Rylan 2-Person Indoor Infrared (SKU 2504455) (opens in a new tab)

For more choices by room and budget, see our best indoor saunas roundup.

Safety Note

Saunas appear safe for most healthy adults, per Harvard Health, but heat stresses your heart and affects blood pressure unpredictably. Talk to your doctor before using an infrared sauna if you have heart disease, high or low blood pressure, are pregnant or trying to conceive, or take medications. Cleveland Clinic says to avoid saunas after a recent heart attack or stroke.

• Keep sessions to 15 to 20 minutes; beginners can start with about 5.
• Never use a sauna alone, after drinking alcohol, or while ill.
• Drink water afterward and cool down gradually.
• Children should only use a sauna with adult supervision and a doctor’s OK.
• If you own a Sauna360-family infrared sauna (Finnleo, Helo, Tylo and others), check the recall before your next session.