Infrared Sauna Buying Guide

Written by Tyler Fish, Co-Founder, Sun Home Saunas · Technical review: Adam Fischer, Co-Founder, Sun Home Saunas · Last reviewed: August 19, 2026

Disclosure: Sun Home manufactures and sells the saunas discussed in this guide. Product recommendations reflect Sun Home's engineering criteria and the published specifications cited in the references below.

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Choosing an infrared sauna is less about comparing feature lists and more about verifying a short set of engineering fundamentals. Most buyer disappointment traces back to the same handful of oversights: a temperature ceiling with less headroom than the buyer later wanted, a "low EMF" claim that was never backed by documentation, or a cabin that arrived with adhesive fumes the spec sheet never mentioned.

 

What Should You Look For When Buying an Infrared Sauna?

 

Infrared or Traditional? Settle This First

Infrared is the better fit for most home users who plan to sauna several times per week. Traditional is the better fit if you want the high-heat ritual: 200°F-plus air, water on stones, and steam. We build both, so the honest answer is that neither is universally superior. They solve different problems.

 If the traditional experience is what you are after, our Nova traditional sauna pairs a HUUM Drop heater with a Canadian cedar cabin and reaches 230°F, and the Solaris brings traditional heat outdoors. You can browse the full traditional collection here. The rest of this guide focuses on infrared.

 

Step 1: Far-Infrared or Full-Spectrum?

Infrared energy spans three wavelength bands, distinguished by where the energy is absorbed. The band definitions and penetration characteristics below follow the CIE classification used by the International Commission on Non-Ionizing Radiation Protection (ICNIRP; see references).

• Near infrared (IR-A), roughly 780–1,400 nm: the shortest infrared wavelengths, penetrating up to several millimeters into tissue before being absorbed.
• Mid infrared (IR-B), roughly 1,400–3,000 nm: absorbed within about a millimeter of the skin surface.
• Far infrared (IR-C), roughly 3,000 nm to 1 mm: absorbed in the outermost skin layers, producing the enveloping warmth and strong sweat response most people associate with infrared saunas.

Most infrared saunas on the market emit far infrared only. That is not a defect; far infrared delivers the classic gentle session and remains the right choice for many buyers. Full-spectrum systems add dedicated near and mid infrared emitters to that base. Whether the broader band mix translates into a better session for you depends on the number and positioning of dedicated emitters, irradiance at the body, and heater coverage, not on the label alone.

One caution: "full-spectrum" is an unregulated term. Some cabins market a single supplemental bulb as full-spectrum. Ask how many dedicated near and mid infrared emitters the cabin contains and where they sit relative to the bench.

Who should buy which: If your goals are relaxation, gentle sweating, and a lower price point, a far-infrared model like the Pod or Solstice is the efficient choice. If you want all three infrared bands in one cabin with the strongest, most adjustable heat delivery, choose full-spectrum: the Equinox or Eclipse indoors, or the Luminar outdoors. For a deeper comparison, see our guide to full-spectrum versus far infrared.

 

Step 2: Verify the Temperature Ceiling

Temperature preference is personal, and there is no single correct maximum. Many infrared cabins top out at 130–140°F, which genuinely suits buyers who prefer gentle, longer sessions. Buyers who prefer intense heat or shorter sessions should look for independently verified bench temperatures approaching 160–170°F. Comfort with heat can change with repeated exposure, though increases in temperature and session length should be gradual; a temperature ceiling is the one specification you cannot upgrade later, so capability headroom preserves choice without being a target every user needs to reach.

Sun Home builds for the upper practical range of the format: the Equinox holds a verified 165°F, and the outdoor Luminar reaches up to 170°F. That headroom is not about running every session at maximum. It is about flexibility: faster sweat onset when you want a short session, and adjustable intensity as your preferences change.

Whichever intensity you prefer, verify the number rather than relying on the control-panel setting. Four details matter: the cabin temperature measured at the bench (heater-surface figures run far higher than what you experience), the measurement location, the ambient conditions during the test, and the warm-up time to reach it. A cabin that technically reaches 150°F after 90 minutes is a 130°F sauna in practice.

 

Step 3: Heater Emissivity and Purpose-Built Design

Emissivity describes how efficiently a surface radiates infrared energy, on a scale from 0 to 1. It is the least-marketed and most consequential heater spec: a high-emissivity emitter transfers more of its output directly to your body, while a low-emissivity element spends more of its energy heating the air around it.

Sun Home publishes a 99% emissivity specification for its heater panels, a manufacturer-stated figure, and designs its heaters specifically for human infrared exposure. Some cabins on the market instead use heating elements adapted from industrial or space-heating applications, where warming air, not bodies, was the original job. The difference shows up in how quickly you feel the heat penetrate and how evenly it covers you at the bench.

Ask what the emitter surface material and coating are, whether the emissivity figure is manufacturer-stated or independently measured, and whether the heaters were engineered for sauna use or adapted from another application. A brand that knows its heaters will answer immediately.

 

Step 4: EMF: Ask for the Documentation, Not the Claim

"Low EMF" appears on nearly every infrared sauna listing, yet the term has no standardized definition. Two practices make unverified claims nearly meaningless: quoting peak rather than time-averaged readings, and measuring at the heater surface rather than where you actually sit.

We took the opposite approach. Sun Home commissioned Vitatech Electromagnetics LLC, a US firm specializing in electromagnetic measurement, to independently test our saunas using a laboratory-grade fluxgate magnetometer, measuring AC ELF magnetic fields across a 10–3,000 Hz frequency range with the sauna heating element under load, in both 120V and 230V configurations.

Testing reported RMS (root mean square) magnetic-field values, which express the effective magnitude of the measured time-varying field over the test interval rather than only a momentary peak (the metric Vitatech's summary describes as the standard used in engineering and safety analysis), at three seated distances from the heater. Because field strength falls off with distance, a single number without a stated measurement position tells you very little. The distance curve below is what honest EMF reporting looks like:

 

Vitatech's summary concludes that the heating technology operates at ultra-low RMS EMF levels at normal seated distances, placing Sun Home within the lowest EMF tier of premium infrared sauna manufacturers. Sun Home's published 0.5 mG headline figure falls within the independently measured 3-foot range.

Readings rise closer to the panels, which is exactly why any EMF number without a measurement position, methodology, and lab name is not comparable to any other brand's number. You can read the Vitatech RMS testing summary here; model-specific test documentation is available from Sun Home on request, and our complete safety and testing documentation is published here.

Whatever brand you are considering, ask for four things: a specific reading in milligauss, a named independent lab, the methodology (instrument type, and RMS versus peak), and the measurement position. A seated-position figure reflects real exposure during a session; a heater-surface figure does not. Any missing element is a red flag.

 

Step 5: Materials, Adhesives, and Cabin Air Quality

A sauna is a heated wooden box you sit inside and breathe deeply in. What that box is made of, and glued together with, matters more than in almost any other product category.

Wood species. Cedar, eucalyptus, hemlock, and basswood are all legitimate sauna woods with different tradeoffs: cedar is aromatic and naturally moisture-resistant, eucalyptus is dense, dimensionally stable, and low-aroma, while hemlock and basswood are pale, mild-scented options common at lower price points. Sun Home cabins are built from solid kiln-dried wood, using eucalyptus or Canadian cedar depending on the model, with no composite-wood panels, and select indoor models are ETL Listed for the US and Canada through Intertek with RoHS compliance across the lineup. What you want to avoid at any price is unnamed softwood, thin veneers over composite board, or a brand that cannot tell you where its lumber comes from.

Adhesives and off-gassing. This is where low-cost cabins cut corners, because it is invisible on a spec sheet. Composite panels and industrial adhesives can release volatile organic compounds (VOCs), including formaldehyde, and heat accelerates the release. Rather than assert that our cabins are clean, we tested:

• An AIHA-accredited laboratory (LA Testing, Project #66958, April 2026) analyzed a cabin-air sample from a Sun Home sauna using EPA Method TO-15. Total VOCs measured 27 µg/m³ in that one-time sample, a result the lab classified as "Low."
• Separate adhesive screening found no formaldehyde or BTEX compounds above laboratory reporting limits in the cabin-assembly adhesive, with adhesive VOC content below 0.001%.

We publish these as what they are: a single-sample snapshot from one tested cabin, not a continuous monitoring program. We share them because almost no one else in the category tests at all. Ask any brand you are evaluating whether they have laboratory air-quality data and adhesive documentation. Full details are on our safety and testing page.

 

Step 6: Size, Placement, and Electrical Fit

Capacity

Rated capacity is a shoulder-to-shoulder figure. A "2-person" cabin seats two people comfortably only if they are comfortable sitting close. If two of you will use the sauna together regularly, or if you want room to stretch, size up one rating. Solo users who value a small footprint are well served by a 1-person format like the Pod.

Space planning

Before ordering, confirm four measurements: the cabin footprint plus a few inches of wall clearance for ventilation, the cabin height against your ceiling, the delivery path (doorways, hallways, stair turns) against the largest packed panel, and a level, hard floor surface at the destination.

Indoor or outdoor

An indoor cabin placed outside will fail, warranty or not. Outdoor saunas require engineered weather protection: insulated walls, sealed electronics, and a roof system built for sun and rain. If the sauna is going on a patio or in a backyard, shop the outdoor collection, where the Luminar was purpose-built for exactly that. For inside the home, start with the indoor collection.

Electrical

Across the industry, compact far-infrared models commonly run on standard 120V household circuits, while larger cabins and outdoor full-spectrum models often require dedicated 240V service. Every Sun Home sauna requires a dedicated circuit rather than a shared household outlet: smaller models such as the Equinox run on 120V with a dedicated 20-amp circuit, while larger Eclipse and Luminar configurations require dedicated 240V circuits installed by a licensed electrician. Whatever brand you choose, check the published voltage, amperage, and plug type for the exact model and size before ordering, and price any electrical work into your budget rather than discovering it on delivery day.

 

Step 7: Warranty and Long-Term Support

A sauna is a 10-plus-year purchase, so the warranty is part of the product. Sun Home backs most models with a limited lifetime warranty and services them through an in-home technician network covering all 50 states. Whatever brand you choose, read the terms for four things: whether heaters, electronics, and controls are covered (not just the wood structure), how long each component category is covered and how "lifetime" is defined, who performs service and how parts are supplied, and whether support is US-based and reachable by phone. A long warranty from a brand you cannot get on the phone is a short warranty. 

How Much Should You Spend?

Price bands describe common market positioning, not a guarantee of quality in either direction. Use them to set your verification expectations, then hold every cabin to the same checklist regardless of price.

• Under $2,000: Typically far-infrared-only cabins with lower published temperature ceilings and lighter construction. Third-party documentation is rare at this tier, so verify the actual bench temperature, panel construction, and warranty terms rather than assuming the worst or the best.
• $3,000–$6,000: Where quality far-infrared models and entry full-spectrum cabins commonly sit. Documentation begins to appear at this tier; confirm emitter counts and placement, EMF testing details, and materials sourcing rather than taking them on faith.
• $6,000 and up: Where verified full-spectrum systems, outdoor-rated builds, and lifetime warranties are typically positioned. Price alone proves nothing at this tier either: ask for the testing documentation and read it.

The more useful math is cost per session. A sauna used four times a week for ten years delivers more than 2,000 sessions; at that denominator, the price difference between tiers works out to a few dollars per session, which is worth weighing against what each cabin can actually document.

 

The Buyer's Checklist

Print this, or keep it open in a tab, and put every sauna you consider through it.

 Which Sun Home Sauna Fits Your Situation?

Take the Two-Minute Sauna Quiz

Or call a specialist at 844-728-6200.

 

Frequently Asked Questions

What temperature should an infrared sauna reach?

There is no single correct number. Most sessions happen between 120–150°F. Buyers who want intense heat should look for an independently verified bench temperature approaching 160–170°F; buyers who prefer gentler sessions may be satisfied with a lower maximum. Verify where and how the figure was measured, not just the control-panel setting.

Are "low EMF" claims on infrared saunas trustworthy?

Only when backed by documentation naming the lab, the methodology, and the measurement position. Vitatech Electromagnetics independently measured Sun Home saunas at 0.3–0.9 mG RMS at the 3-foot seated distance, with the distance curve and testing summary published, and model-specific documentation available on request.

Do infrared saunas off-gas VOCs or formaldehyde?

They can, depending on the panels and adhesives used, and heat accelerates the release. Ask for laboratory data. An AIHA-accredited lab measured a Sun Home cabin-air sample at 27 µg/m³ total VOCs (EPA Method TO-15), and adhesive screening found no formaldehyde or BTEX above reporting limits.

Is full-spectrum infrared worth it over far infrared?

Full-spectrum may be worth it for buyers who want near, mid, and far infrared output in one cabin. The full-spectrum label alone does not prove superior results: compare the number and positioning of dedicated emitters, irradiance at the body, heater coverage, and published testing before paying the premium.

What size infrared sauna do I need?

Size up one rating from how many people will actually use it together, since capacity ratings are shoulder-to-shoulder figures. Confirm the footprint plus wall clearance, cabin height against your ceiling, and the delivery path against the largest packed panel before ordering.

Do infrared saunas need special wiring?

Often, yes. Compact models commonly run on 120V with a dedicated circuit, while larger cabins and outdoor full-spectrum models often require dedicated 240V service installed by an electrician. Every Sun Home sauna requires a dedicated circuit; always confirm the published voltage, amperage, and plug type for the exact model before purchase.

Can an infrared sauna go outside?

Only if it was engineered for outdoor use, with insulated walls, sealed electronics, and a weather-rated roof. Placing an indoor cabin outdoors will damage it. Sun Home's Luminar is purpose-built for outdoor installation and reaches up to 170°F.

How long does an infrared sauna take to heat up?

Most quality infrared saunas reach session-ready temperatures in 15–30 minutes, roughly half the warm-up of a traditional sauna. Because infrared heats the body directly, many users begin their session before the cabin reaches its maximum air temperature.

 

How This Guide Was Developed

The seven criteria come from Sun Home's product engineering standards, the independent laboratory testing cited throughout (Vitatech Electromagnetics for EMF; VERT Environmental sampling with analysis by AIHA-accredited LA Testing for cabin air), and recurring themes from thousands of buyer and support conversations. Foundational technical definitions, including infrared band classification and penetration depth, follow published ICNIRP sources, with NIOSH occupational heat guidance cited as general background listed in the references. Sun Home manufactures the saunas named in the product-fit table, and the verification standard described in this guide applies to our own claims as well: where a figure is manufacturer-stated rather than independently tested, such as panel emissivity, we say so.

 

The Bottom Line

Every section above reduces to one principle: documented beats claimed. Temperature documented at the bench. EMF documented by an independent lab with a stated measurement position. Materials documented by air testing and adhesive screening. Support documented by warranty terms you have read. That is the standard we hold ourselves to, and it is the standard we would hold any brand to.

When you are ready, find your setup with the sauna quiz, explore the full-spectrum and far-infrared collections, or talk to an expert at 844-728-6200.

 

References

1. Vitatech Electromagnetics LLC, Electromagnetic Field (EMF) RMS Exposure Summary, prepared for Sun Home Saunas; select RMS findings derived from Vitatech test reports VTE-3534 (January 2025 testing). Method: AC ELF magnetic-field RMS, 10–3,000 Hz, laboratory-grade fluxgate magnetometer, sauna heating element under load, 120V and 230V configurations. Distance-specific RMS ranges: 0.6–4.0 mG at 1 foot, 0.4–1.8 mG at 2 feet, 0.3–0.9 mG at 3 feet (representative seated distance). Testing summary (PDF). Full model-specific reports available from Sun Home on request.
2. VERT Environmental (sampling) and LA Testing (AIHA-accredited analysis), cabin-air VOC analysis via EPA Method TO-15, Project #66958, April 2, 2026: 27 µg/m³ TVOC, one-time sample, classified "Low." Summarized on the Sun Home safety and testing page.
3. ATS adhesive screening of the cabin-assembly adhesive: no formaldehyde or BTEX compounds above laboratory reporting limits; adhesive VOC content below 0.001%. Summarized on the safety and testing page.
4. Sun Home Saunas, warranty information: coverage terms and in-home service network.
5. International Commission on Non-Ionizing Radiation Protection (ICNIRP), Infrared (780 nm–1 mm): IR-A, IR-B, and IR-C band definitions and tissue penetration characteristics.
6. ICNIRP, Statement on Far Infrared Radiation Exposure (PDF), Health Physics 91(6):630–645, 2006: infrared penetration depths by band and infrared warming-cabin exposure characteristics.
7. National Institute for Occupational Safety and Health (NIOSH), Acclimatization: occupational guidance on gradual adaptation to hot working environments, cited as general background on physiological heat adaptation rather than sauna-specific evidence.