Clearlight vs. Finnleo: An Honest Comparison for Infrared Sauna Buyers

If you have spent any time researching home infrared saunas, two names come up repeatedly: Clearlight and Finnleo. Both are established manufacturers with real engineering behind them. Neither is a cheap import, and anyone telling you one of them is junk is not giving you an accurate picture.

They are, however, built on different philosophies. Those differences matter depending on what you actually want out of a sauna. Here is a factual look at how the two compare.

Company Background

Finnleo is a division of Sauna360, part of the TyloHelo group, a Finnish-Swedish manufacturing conglomerate that also owns the Tylo and Helo brands. Finnleo was founded in 1984 and operates out of Cokato, Minnesota, with additional manufacturing in Sweden and Finland. The company’s roots are in authentic Finnish traditional sauna, and that heritage is legitimate. If you want a rock heater, löyly, and steam, Finnleo has decades of credibility.

Clearlight, manufactured by Sauna Works, has focused exclusively on infrared since 1997. Clearlight does not make traditional Finnish saunas. Everything the company builds is infrared, and the product line reflects that specialization. Beyond the standard residential lineup, Clearlight builds custom infrared saunas to specification, including large-scale commercial installations for professional athletic facilities.

That single distinction explains most of what follows. Finnleo is a traditional sauna company that also makes infrared. Clearlight is an infrared company.

Heating Technology: Far Infrared Only vs. Full Spectrum

This is the sharpest divergence between the two brands.

Finnleo uses CarbonFlex emitters across its entire infrared line, and those emitters produce far infrared only. Finnleo is direct about this rather than evasive. Their stated position is that far infrared in the 7 to 14 micron range is what the body absorbs most efficiently, and that near and mid infrared contribute little at sauna distances because of the inverse square law of light. It is a defensible argument and Finnleo makes it openly.

Clearlight takes a different approach across two lines:

• Premier line: True Wave carbon-ceramic far infrared heaters throughout the cabin.
• Sanctuary line: The same True Wave carbon-ceramic far infrared heaters on the back wall, side walls, and behind the legs, plus True Wave full spectrum heaters delivering near, mid, and far infrared on the front wall.

The carbon-ceramic construction is worth understanding. Micro-thin carbon fibers are combined with a high-emissivity ceramic compound. Carbon alone produces a broad, gentle heat but at lower output. Ceramic alone produces higher output but concentrates it in hot spots. The combination is intended to deliver the coverage of carbon with the output of ceramic.

Whether near and mid infrared matter to you is a reasonable question, and the clinical evidence at sauna distances is still developing. But there is a difference between “you do not need this” and “we do not offer this.” Finnleo’s line has no full spectrum option at any price. Clearlight’s Sanctuary line includes it as standard.

Heater Placement and the Front Wall Question

This gets less attention than it deserves, and it may be the most practical difference of all.

Infrared is radiant energy. It travels in straight lines, in whatever direction the emitter faces, and it warms the first surface it strikes. It does not bend around corners, circulate like hot air, or fill a room evenly. If a part of your body is not in the direct line of sight of an emitter, that part is not receiving infrared.

Every Finnleo S-Series model features an all-glass front wall. It looks excellent and it makes a small cabin feel more open, which is a legitimate design benefit. But glass is not an emitter. Finnleo places its CarbonFlex panels on the three solid walls, under the bench, behind the calves, and in the floor. Seated facing that glass, the entire front of your body, chest, abdomen, and the fronts of your thighs, has nothing in front of it emitting infrared.

Clearlight places heaters on all four walls, front wall included. On the Sanctuary line, the front wall heaters are the full spectrum units, so the front of the body receives near, mid, and far infrared directly while far infrared surrounds the rest. That front wall position also provides the diffusion distance full spectrum heaters require to work properly.

This is not a subtle distinction once you think about where you sit. Half your body surface faces forward.

There is a second placement issue. Finnleo markets that their emitters extend above the shoulders to cover the neck and head. Presented as comprehensive coverage, this runs against a principle worth considering: heating the head aggressively is not desirable. Elevated temperature is hard on neural tissue, and more practically, a rapidly heating head is what drives most people out of a sauna early. Shorter sessions mean less core temperature elevation, which is where the cardiovascular and detoxification benefits actually come from. The traditional Russian banya felt hat exists for exactly this reason. Bathers wear it to keep the head cool so the body can stay in longer.

Operating Temperature

Thin carbon-film panel systems produce lower surface temperatures and lower total output than combination carbon-ceramic heaters, and cabin temperature reflects that.

Finnleo’s infrared cabins run in the range of roughly 120°F to 140°F. Finnleo argues that a high room temperature is not required for infrared benefit, and there is something to that. Infrared heats the body directly rather than the air.

By comparison, Clearlight Premier models reach the 130s and Sanctuary models reach the 140s to 150s. The higher ceiling gives you range. You can run a Clearlight at a mild 120°F if that is what you want, or push it considerably higher when you want a harder session. You cannot run a sauna hotter than its maximum.

EMF and ELF: What the Numbers Actually Mean

Both companies market low electromagnetic exposure, and both have third-party testing. This section requires care, because EMF marketing across this industry is full of non-comparable figures.

Finnleo’s published specification for Pure Infra technology is less than 2 milligauss EMR and 1 V/m electric field, verified by Intertek. Finnleo also states this falls below Sweden’s radiation standards, which are among the strictest published.

That framing deserves context. Sweden’s referenced standards sit in the low single digits of milligauss. Clearing that bar is meaningful, but it is a ceiling, not a target. For reference, Clearlight’s True Wave heaters measure approximately 0.1 to 0.2 milligauss at the seated position on the bench, which is where your body actually is during a session.

Two honest caveats. First, Finnleo’s figure is a published maximum threshold and Clearlight’s is a measured value at a specified location, so these are not perfectly equivalent measurements. Second, measurement distance is the entire game in EMF marketing. A reading taken three feet from a heater will always look better than one taken at the bench, and many manufacturers report the former without saying so.

That caveat is precisely why the seated-position measurement matters. Ask any manufacturer, Clearlight included, where the reading was taken. If they will not tell you the distance, the number is not useful.

One further distinction: Clearlight shields both EMF and ELF. Extremely low frequency fields are addressed by fewer manufacturers, and Finnleo’s published specification covers EMR and electric field rather than ELF specifically.

Warranty

Finnleo’s five-year coverage on cabin, emitters, and controls is respectable and sits mid-pack for the category. It is not a weak warranty.

Clearlight’s structure works differently. Parts are covered for the life of the original owner. Labor is covered for seven years, with a technician dispatched to you. After year seven, parts remain free, and the saunas are designed to be user-serviceable, with owner-led component replacement supported by dealer guidance. A heater that fails at year fifteen is still a covered part.

Both brands will send someone out during their labor coverage period. The difference is what happens after year five.

Outdoor Infrared

Finnleo builds outdoor saunas, and they build them well. Those outdoor models are traditional saunas. Finnleo’s infrared line, including the entire S-Series, is sold and categorized as indoor. We found no outdoor-rated infrared model in Finnleo’s current lineup.

Clearlight offers two purpose-built outdoor infrared saunas, the Sanctuary Outdoor 2 and the Sanctuary Outdoor 5. These are not indoor cabins moved outside. They use weather-resistant exterior construction, marine-grade roof materials with extended overhangs, ten millimeter tempered glass with dual weather stripping, and waterproof luxury vinyl flooring over a mahogany interior.

If you want infrared and you want it outside, this is currently a category where the options are limited and Clearlight is in it.

The Accessory Ecosystem

This is where the gap widens considerably, and it is worth spending a moment on because it changes what the sauna is over time.

A Finnleo infrared sauna is a sauna. It has good lighting, Bluetooth audio, and a strong control system. What it is when you buy it is largely what it remains.

A Clearlight sauna is a platform you can build on:

• Red Light Therapy Tower. Door-mounted, over three feet tall, engineered to operate inside sauna heat. It combines 650nm red LEDs with 850nm near infrared LEDs and provides whole or half-body coverage from roughly face to shins while seated. This is not a small targeted panel you hold against your shoulder. It is a full therapy device that runs during your session.
• Halo One Salt Therapy. Halotherapy integrated into the sauna environment, dispersing micronized salt during your session.
• Aromatherapy. Integrated essential oil delivery.
• Chromotherapy. A ceiling-mounted panel of 96 LEDs in Sanctuary models, offering twelve colors selectable individually or on an auto-cycle. Premier models include 36 color-changing LEDs.
• Vitamin D accessory. Currently in the product pipeline.

The practical consequence is that a Clearlight purchase is not a fixed endpoint. You can start with the cabin and add red light therapy in year two, salt therapy in year four. Each addition changes what your daily session does for you, using equipment designed to work inside sauna heat rather than adapted to it.

Shared Features Across Both Clearlight Lines

A clarification worth making, because comparison articles frequently get this wrong. The following are included across both the Premier and Sanctuary lines, not exclusive to Sanctuary:

• Digital keypad controls for temperature, time, and lighting
• Bluetooth and AUX audio
• Under-floor foot heater
• Chiropractor-designed built-in ergonomic backrest
• Doctor-designed bench
• True Wave carbon-ceramic low EMF and low ELF far infrared heaters
• Chromotherapy, with a 96-LED ceiling panel in Sanctuary models and 36 color-changing LEDs in Premier models

Sanctuary models add the full spectrum front wall heaters and a device charging station. All Clearlight Sanctuary saunas can be operated from the mobile app, and the in-cabin keypad controls everything independently, so the app is an alternative rather than a requirement. Finnleo’s InfraLogic2 touchscreen with its companion app is a strong system and the two brands are closely matched on control technology.

Wood and Construction

Finnleo S-Series cabins use clear tongue-and-groove Canadian Hemlock, finished inside and out, with a biodegradable exterior treatment. Hemlock is a stable, low-resin sauna wood with a good reputation for fit and finish.

Clearlight offers North American Basswood and one hundred percent eco-certified Grade Mahogany, along with signature combinations. Basswood is hypoallergenic with a very low reactivity rating, which matters for people with chemical or wood sensitivities. Mahogany is denser and retains heat longer.

Both companies build without toxic glues or varnishes, and both are ETL safety listed. The practical difference is choice, including a hypoallergenic option.

How You Buy

Neither brand offers an online shopping cart, but access to pricing differs.

Clearlight pricing is available immediately. Enter an email address on the Clearlight or Heal with Heat site and you land on a full pricing page. No appointment, no callback, no sales conversation required to find out what a model costs.

Finnleo does not publish pricing. You contact a dealer and request a quote, and installed pricing varies by region and dealer. Independent reviews of the brand consistently flag opaque pricing and inconsistent dealer experiences as a drawback.

Neither brand lets you complete a purchase with a checkout button, and for Clearlight that is deliberate rather than an oversight. An infrared sauna involves electrical requirements, delivery logistics, and placement decisions that are difficult to get right through a cart. A 240V model needs a dedicated circuit. A basement may need different handling than a spare bedroom. An outdoor model raises questions about pad, clearance, and weather exposure. Sorting that out before you order is the difference between a smooth installation and an expensive surprise.

Finnleo’s dealer network does offer a real advantage worth stating plainly: many dealers maintain showrooms where you can sit in a floor model before committing. Trying a sauna in person is valuable, and if that matters most to you, it is worth weighing.

Where Finnleo Is the Better Choice

• You want traditional Finnish sauna, or both types of heat. Finnleo’s InfraSauna combines a Finnish rock heater with far infrared panels in one room. Clearlight makes no hybrid and no traditional sauna. If löyly matters to you, this is not a close call.
• You want infrared retrofitted into an existing traditional sauna room. Finnleo’s Custom Cut program builds traditional rooms to nearly any shape and size, and can add far infrared panels into a traditional room you already own. If you have a traditional sauna and want to add infrared to it rather than buy a separate unit, that is Finnleo’s territory.
• You want to sit in it first. The showroom network is a real advantage.

Where Clearlight Is the Better Choice

• You want full spectrum infrared. Finnleo does not offer near or mid infrared in any model.
• You want infrared reaching the front of your body. An all-glass front wall cannot emit.
• You want the lowest measured EMF at the bench. Roughly 0.1 to 0.2 milligauss at the seated position, with ELF shielded as well as EMF.
• You want coverage that outlasts the decade. Parts for the life of the original owner, and a design intended to be serviceable afterward.
• You want an outdoor infrared sauna. Finnleo’s outdoor line is traditional.
• You want to add therapies over time. Red light therapy, halotherapy, and aromatherapy, with a vitamin D accessory in development.
• You want a hypoallergenic cabin. Basswood’s low reactivity rating is a real consideration for sensitive users.
• You want to see pricing without a sales conversation. An email address gets you a full price list in seconds. Finnleo requires a dealer quote.
• You want a custom sauna. Alongside the standard model lineup, Clearlight builds custom infrared saunas to specification, from residential installations designed around an awkward room to large-format commercial builds for professional sports and athletic training facilities.
• You want control over how hot your sessions get. Clearlight Premier models reach the 130s and Sanctuary models reach the 140s to 150s, so you can run a mild session or a hot one depending on the day. A cabin that tops out around 140°F can only ever give you the milder version.

The Bottom Line

Finnleo is a serious company making a well-built product, and buyers who want traditional Finnish sauna heat or a hybrid room should look hard at them. In those categories, Clearlight does not compete.

But most people shopping for a home infrared sauna are not looking for a rock heater and steam. They want deep infrared heat, the lowest realistic EMF and ELF exposure, and equipment that will still be covered and serviceable in fifteen years. On those terms the comparison resolves fairly clearly. Full spectrum wavelengths, front wall heater placement, measured bench-level EMF an order of magnitude below the published competitor ceiling, lifetime parts coverage, an outdoor option, and an accessory ecosystem that grows with you.

If infrared is what you actually want, Clearlight is the stronger buy.

Frequently Asked Questions

Does Finnleo make a full spectrum infrared sauna?

No. Finnleo’s infrared line uses CarbonFlex emitters that produce far infrared only. The company’s stated position is that near and mid infrared contribute little at sauna distances. Clearlight’s Sanctuary line includes full spectrum near, mid, and far infrared heaters on the front wall as standard.

Does Finnleo make an outdoor infrared sauna?

Finnleo builds outdoor saunas, but those models are traditional. Their infrared line is sold as indoor. Clearlight offers two purpose-built outdoor infrared models, the Sanctuary Outdoor 2 and Sanctuary Outdoor 5, with weather-resistant construction and marine-grade roof materials.

How do Clearlight and Finnleo compare on EMF?

Finnleo publishes a specification of less than 2 milligauss EMR, verified by Intertek. Clearlight’s True Wave heaters measure approximately 0.1 to 0.2 milligauss at the seated position on the bench. Finnleo’s figure is a published maximum and Clearlight’s is a measured value at a stated location, so ask any manufacturer where their reading was taken. Clearlight also shields ELF in addition to EMF.

How hot does a Clearlight sauna get compared to a Finnleo?

Finnleo’s infrared cabins run roughly 120°F to 140°F. Clearlight Premier models reach the 130s and Sanctuary models reach the 140s to 150s. A higher maximum gives you the option of a milder or a harder session.

What is the warranty difference between Clearlight and Finnleo?

Finnleo covers the cabin, emitters, and controls for five years on residential installations. Clearlight covers parts for the life of the original owner, with seven years of labor coverage and technician dispatch. After year seven, parts remain free and the sauna is designed to be user-serviceable with dealer guidance.

What accessories can be added to a Clearlight sauna?

Clearlight supports a Red Light Therapy Tower with 650nm red and 850nm near infrared LEDs, Halo One Salt Therapy, and aromatherapy, with a vitamin D accessory in development. Chromotherapy is included, using a 96-LED ceiling panel in Sanctuary models and 36 color-changing LEDs in Premier models. Each accessory is engineered to operate inside sauna heat.

Does Clearlight build custom infrared saunas?

Yes. Alongside its standard residential model lineup, Clearlight builds custom infrared saunas to specification, covering both home installations designed around a specific space and large-scale commercial projects for professional sports and athletic training facilities. Finnleo’s custom program centers on traditional sauna rooms, with the option of retrofitting far infrared panels into an existing traditional room.

Can I see pricing or buy either sauna online?

Clearlight pricing is available instantly by entering an email address on the Heal with Heat site. Finnleo does not publish pricing and routes buyers to a dealer quote. Neither brand offers online checkout. For Clearlight this supports pre-purchase planning around electrical requirements, delivery, and installation, which are easy to get wrong without a conversation.

Have questions about which model fits your space, climate, or electrical setup? Call 800-317-5070 or email info@HealwithHeat.com. We are happy to walk through it.

Disclosure: Heal with Heat is an authorized Clearlight Infrared Saunas dealer. Competitor specifications cited here are drawn from published manufacturer materials and authorized dealer listings and were accurate at the time of writing. Manufacturers revise specifications and warranties without notice; confirm current details directly with any brand you are considering.