Sauna · Buyer’s Guide
Types of Saunas: The Complete Guide to Benefits and How to Choose the Right One
Types of saunas divide into three main families — traditional Finnish (electric or wood-fired, 70–90°C / 160–195°F, low humidity), infrared (near, mid, or far wavelengths, 50–65°C / 120–150°F, no steam), and steam rooms (43–49°C / 110–120°F, near-100% humidity) — plus barrel, cabin, indoor prefab, and portable formats that describe the enclosure rather than the heat type. Each works differently, feels different on the body, and suits different goals. This sauna guide covers every format in depth: how it heats, what the session feels like, the evidence behind the health claims, and a structured framework for choosing the right one for your space and wellness routine.
Key Takeaways
- Three heat families, many enclosure formats. Traditional Finnish (electric or wood-fired), infrared, and steam are the three heat technologies; barrel, cabin, indoor cabin, and portable describe the structure. They mix and match.
- Temperature ranges differ significantly. Traditional: 70–90°C; infrared: 50–65°C; steam: 43–49°C at near-100% humidity. Infrared heats you more directly, so sweat onset is faster despite the cooler air.
- The strongest cardiovascular evidence is for traditional Finnish bathing. Laukkanen et al. (2018, Mayo Clinic Proceedings) found associations between frequent Finnish sauna use and reduced cardiovascular risk — observational data, not a clinical trial, so claims should be tempered.
- Infrared near/mid/far distinctions matter for buyers. Near-IR penetrates deepest; far-IR is the most studied for sweat and relaxation. Full-spectrum covers all three.
- Barrel and outdoor cabin saunas are the most space-flexible traditional-heat option, purpose-built for Canadian climates and year-round outdoor use.
- Start your sauna search with the full Calore sauna collection to compare electric, infrared, and cedar builds side by side.
What Are the Main Types of Saunas?
Every sauna does one thing: raise your core body temperature enough to induce sweating, vasodilation, and the cascade of physiological responses that define the ritual. How it does that — and how it feels on your skin — splits almost entirely by heat mechanism. The three heat families are traditional Finnish (radiant-convective heat from stones), infrared (radiant heat absorbed directly by the body), and steam (saturated moisture at lower temperatures). Layer on top of that the enclosure — barrel, outdoor cabin, indoor prefab cabin, or portable tent — and you have the full landscape of options a buyer faces.
Two parallel questions sit at the centre of every purchase decision: What heat type suits my body and wellness goals? And: What structure fits my space and climate? Understanding the full range of types of saunas available today — from ancient smoke saunas to modern full-spectrum infrared cabins — is the essential starting point. This sauna guide addresses both questions in order.
Traditional Finnish Sauna (Electric and Wood-Fired): How It Works and What It Feels Like
The traditional Finnish sauna is the oldest and most studied format — a wood-lined room heated to 70–90°C (160–195°F) with very low ambient humidity (5–20%), where bathers ladle water over hot sauna stones to create short bursts of steam called löyly. The stones — typically volcanic diabase or olivine — store and release heat in a way that gives the Finnish sauna its characteristic feel: intense, enveloping, and deeply ritualistic.
Electric Finnish sauna
An electric sauna heater is the most practical and controllable way to heat a Finnish-style room. Units mount to the wall or floor, heat the stones directly, and allow precise digital temperature control. Most residential heaters reach operating temperature in 30–45 minutes and draw 4–8 kW depending on room volume; in Canada that means a dedicated 240V circuit is standard. Electric saunas are quieter, cleaner, and lower-maintenance than wood-fired units, with no ash management or wood supply. The Calore sauna heater range includes options sized for both compact indoor rooms and larger outdoor cabins.
Wood-fired sauna
A wood-burning kiuas (stove) produces radiant heat from an open firebox and heats a larger stone mass, typically delivering a softer, more aromatic warmth that many Finnish-tradition bathers prefer over electric. Heat-up takes longer — 45 to 90 minutes depending on wood quality and stove mass — and the session temperature curves gently rather than spiking. Wood-fired units are popular in outdoor barrel and cabin builds, require proper flue installation and clearance from combustibles, and are not allowed in all municipal jurisdictions for indoor use; check your local building code. The payoff is authenticity: the crackle of the fire, the scent of birch or spruce, and the slow build of heat that Finnish sauna culture was built around.
Smoke sauna (savusauna)
The smoke sauna — savusauna in Finnish — is the oldest of all types of saunas and the ancestor of every modern format. It has no chimney: a large wood fire heats a massive stone mass directly inside the room, filling the space with smoke for several hours. Once the fire dies down and the smoke has been vented by opening the door and vents (a process taking 30–60 minutes), the stones retain intense heat — typically 70–80°C — and radiate it gently for a long, even session. The smoke deposits a thin layer of carbon on the interior walls that acts as a natural antimicrobial surface. The Finnish Sauna Society recognises the savusauna as a living heritage tradition; UNESCO added Finnish sauna culture, centred on the savusauna, to its list of Intangible Cultural Heritage in 2020. Smoke saunas are rare in North America, require a purpose-built structure, and demand significant preparation time, but those who have experienced one consistently describe the heat as uniquely soft and enveloping.
Heat and safety. Traditional sauna temperatures above 80°C demand caution for anyone with cardiovascular conditions, pregnancy, or medication that impairs thermoregulation. The Finnish Sauna Society recommends staying well-hydrated, limiting sessions to 10–20 minutes at a time, cooling between rounds, and never using alcohol in the sauna. Always consult a physician if you have any health conditions.
Infrared Sauna Types: Near, Mid, Far, and Full-Spectrum
Infrared saunas don’t heat the air around you — they emit electromagnetic radiation in the infrared band that penetrates the skin and raises body temperature directly, producing a deep sweat at significantly lower air temperatures than a Finnish sauna. The cabin interior typically sits at 50–65°C (120–150°F), which many users find easier to breathe in and easier to tolerate for longer sessions. Heat-up time is 15–25 minutes rather than 30–45.
Near-infrared (NIR)
Near-infrared wavelengths (700–1,400 nm) penetrate deepest into tissue and are the closest to visible light on the spectrum — a near-IR bulb produces a faint red glow. NIR is the basis of red light therapy and photobiomodulation research; some full-spectrum sauna panels include NIR alongside mid and far wavelengths. For buyers interested in the intersection of light therapy and heat, see the dedicated Calore red light therapy panel for a standalone red/NIR option.
Mid-infrared (MIR)
Mid-infrared (1,400–3,000 nm) is particularly associated with improved circulation and cardiovascular warm-up, as the wavelengths penetrate to the level of soft tissue and blood vessels. It feels warmer on the surface than NIR and is often combined with far-infrared in two-spectrum panels.
Far-infrared (FIR)
Far-infrared (3,000 nm–1,000 μm) is the most common wavelength in home infrared saunas and the best-studied for whole-body sweat response and relaxation. FIR heaters — in carbon or ceramic panel form — coat the walls of the cabin and surround the bather with radiant warmth. Carbon panels distribute heat more evenly; ceramic panels run hotter and are more common in budget units. The Calore indoor infrared sauna uses multi-emitter carbon panels designed for low-EMF, even-heat distribution in a Grade-A Canadian cedar interior.
Full-spectrum infrared
Full-spectrum saunas combine near-, mid-, and far-infrared in a single panel system, offering the widest range of tissue penetration depths in a single session. They tend to cost more than single-spectrum FIR units and are marketed to buyers who want the recovery and light-therapy benefits of NIR alongside the sweating depth of FIR.
Steam Rooms: The Wet-Heat Alternative
A steam room is technically distinct from a sauna: it runs at lower temperatures (43–49°C / 110–120°F) but near-100% humidity, created by a generator that boils water and continuously jets steam into a sealed, non-porous enclosure. Because walls, bench, and floor must be impermeable to moisture, steam rooms are typically tiled, stone, or acrylic rather than wood. The saturated air feels much hotter than the thermometer suggests, and the moist heat is particularly soothing for the respiratory tract, sinuses, and dry skin.
Steam rooms are popular in commercial spa and gym settings and are a meaningful home addition for anyone with sinus or respiratory concerns. They require a steam-tight room, a floor drain, a quality steam generator, and regular descaling of the generator head if your water supply is hard. Because wood absorbs moisture and warps, cedar benches in a steam room need to be sealed or replaced with teak.
Steam vs. traditional sauna in brief: the Finnish sauna starts dry and gets humid on demand with löyly; a steam room stays saturated throughout. Steam room humidity stays at near-100% the entire session, while a Finnish sauna typically sits at 5–20% humidity between ladles and spikes briefly when water hits the stones.
Enclosure Formats Across All Types of Saunas: Barrel, Cabin, Indoor Prefab, and Portable
Once you’ve chosen your heat type, the enclosure format shapes the spatial and aesthetic experience — and determines installation complexity.
Barrel sauna
The barrel sauna is an outdoor cylindrical structure, almost always cedar, shaped to hold heat efficiently because the curved walls have less dead air space per square foot than a rectangular room. Barrel saunas are typically wood-fired or electric Finnish-heat format, sized for two to six bathers, and sit on simple level footings — no foundation required for smaller units. The Calore Black Cedar Barrel Sauna is built from Grade-A black-stained Canadian cedar with a pre-fitted Harvia electric heater, designed for Canadian outdoor year-round use. They heat relatively fast for their volume and look stunning on a deck or in a garden.
Outdoor cabin sauna
An outdoor cabin is a rectangular or shed-form structure purpose-built as a sauna, offering more interior volume, design flexibility, and social capacity than a barrel. Cabin saunas can accommodate changing rooms, shower alcoves, and larger benching arrangements. Cedar is the traditional material for its rot resistance and aromatic warmth; properly cured Canadian hemlock and Nordic spruce are also common. The Calore Black Cedar Sauna Chamber is an outdoor cabin-format build in Grade-A Canadian cedar, sized for year-round use in Canadian climates with proper insulation and weatherproofing.
Indoor prefab cabin
An indoor prefab cabin drops into an existing room — spare bedroom, basement, garage — and runs on a standard 120V or dedicated 240V circuit depending on heater size. Most residential infrared saunas are indoor prefabs. They require only a level floor, adequate ventilation, and appropriate electrical supply; no foundation, no flue. Ceilings should be at least 210 cm (7 ft) to minimise heat stratification at the top bench. These are the most common entry point for home buyers.
Portable sauna
Portable saunas — tent-style enclosures with an infrared or steam head unit — are the lowest-cost, most space-efficient option for a first sauna experience. They fold flat for storage, require no installation, and plug into a standard outlet. Trade-offs are real: session quality is limited compared to a built cabin, the experience is solitary, and materials and build quality vary widely. They suit renters, those trialling sauna before committing, and anyone with very limited space.
Types of Saunas: Full Comparison Table
Use the table below to compare all major types of saunas across the criteria that matter most to buyers. Temperatures are metric-first; typical session duration assumes a healthy adult; cost ranges are approximate CAD installed for a home unit.
| Sauna Type | Heat Mechanism | Temp Range | Humidity | Heat-Up Time | Typical Enclosure | Best For | Approx. CAD (installed) |
|---|---|---|---|---|---|---|---|
| Traditional Finnish — electric | Convective / radiant from heated stones | 70–90°C (160–195°F) | 5–20% (spikes with löyly) | 30–45 min | Indoor room, cabin, barrel | Authentic ritual, high-heat lovers, social bathing | $5,000–$20,000+ |
| Traditional Finnish — wood-fired | Radiant + convective from firebox / stones | 70–90°C (160–195°F) | 5–20% (spikes with löyly) | 45–90 min | Outdoor barrel or cabin | Authentic outdoor ritual, off-grid, traditional culture | $4,000–$18,000+ |
| Infrared — far (FIR) | Radiant electromagnetic, carbon / ceramic panels | 50–65°C (120–150°F) | <5% (dry) | 15–25 min | Indoor prefab cabin | Daily use, recovery, heat-sensitive users | $3,000–$10,000+ |
| Infrared — full-spectrum (NIR+MIR+FIR) | Radiant, multi-layer panels | 50–70°C (120–158°F) | <5% (dry) | 15–25 min | Indoor prefab cabin | Recovery, light therapy overlap, wellness enthusiasts | $5,000–$15,000+ |
| Steam room | Steam generator, continuous vapour injection | 43–49°C (110–120°F) | ~100% | 10–20 min | Tiled / sealed indoor room | Respiratory health, skin hydration, spa feel | $5,000–$25,000+ (room build) |
| Barrel sauna | Electric or wood-fired Finnish heat | 70–90°C (160–195°F) | 5–20% | 30–60 min | Outdoor cylindrical cedar | Outdoor lifestyle, compact footprint, visual appeal | $4,500–$12,000+ |
| Outdoor cabin sauna | Electric or wood-fired Finnish heat | 70–90°C (160–195°F) | 5–20% | 30–50 min | Outdoor rectangular cedar / hemlock | Larger groups, changing room, design flexibility | $8,000–$30,000+ |
| Portable sauna | Infrared or steam head unit | 40–60°C (105–140°F) | Variable | 5–15 min | Folding tent / pod | Renters, trial users, minimal space | $200–$800 |
What Are the Evidence-Based Benefits of Sauna Use? (And What the Research Actually Says)
The sauna’s health reputation is well-founded but routinely overclaimed — knowing the difference between robust evidence and preliminary findings will help you set realistic expectations.
Cardiovascular associations
The strongest research base sits behind Finnish-style heat bathing and cardiovascular outcomes. A 2015 prospective cohort study by Laukkanen et al., published in JAMA Internal Medicine (PMID 25705824), followed 2,315 middle-aged Finnish men over two decades and found that those who bathed four to seven times per week had statistically lower rates of sudden cardiac death and fatal coronary artery disease compared to those who bathed once per week. A 2018 review by the same group, published in Mayo Clinic Proceedings, examined a broader evidence base and identified associations with reduced blood pressure and improved arterial compliance. Critical caveat: these are observational findings from a population with a lifetime sauna culture — they establish association, not causation, and may reflect broader healthy behaviours. No randomised controlled trial has yet replicated these effects at scale.
Stat: In the Laukkanen 2015 cohort (JAMA Intern Med), frequent sauna users (4–7 sessions/week) had a 63% lower risk of sudden cardiac death compared to once-weekly users in this Finnish cohort. This is a population association, not a guaranteed personal outcome, and the research was conducted on traditional Finnish saunas, not infrared.
Recovery and muscle relaxation
Heat causes peripheral vasodilation, increases blood flow to muscles, and reduces muscle tension — mechanisms that are well-understood and broadly applicable across sauna types. Post-exercise sessions may help clear metabolic waste, reduce perceived soreness, and support the parasympathetic recovery state. See the Calore article on sauna benefits after your workout for a deeper look at recovery protocols. The current evidence for muscle recovery is mechanistically plausible but lacks large, well-controlled human trials; preliminary findings are encouraging, not conclusive.
Relaxation and mental well-being
Sauna bathing reliably produces a parasympathetic shift: heart rate rises during the session, then drops below resting baseline in the cool-down, producing a calming effect that regular users describe as reset-like. Heat triggers endorphin and endocannabinoid release; the ritual itself — the quiet, the warmth, the deliberate pause from daily demands — adds a mindfulness dimension that stress-reduction research supports independently of specific physiology. This benefit is consistent across traditional and infrared formats.
Skin effects
Sweating increases blood flow to the skin and temporarily widens pores, producing a temporary flush and glow that many users notice after sessions. Collagen and heat-shock-protein responses to sauna heat are an active area of research; preliminary findings are interesting, but the anti-aging claims circulating in wellness media significantly outrun the evidence base. Proper post-sauna hydration protects skin; dehydration does the opposite. For deeper coverage, see the Calore article on how sauna use affects skin tone over time.
Who should not use a sauna without medical clearance: pregnant individuals; anyone with unstable cardiovascular conditions, uncontrolled high blood pressure, or recent cardiac events; people with conditions affecting thermoregulation (multiple sclerosis, diabetes with neuropathy); children under supervision; and anyone taking medications that impair heat response. The Finnish Sauna Society recommends never using a sauna alone if you are uncertain of your health status, and always cooling gradually rather than jumping straight into cold water after intense heat.
How to Choose a Sauna: A Step-by-Step Framework
Choosing the right sauna for your home comes down to five intersecting decisions: your wellness goal, your heat preference, your available space, your budget, and your installation constraints. Work through them in order and the field narrows quickly.
Step 1: Define your primary wellness goal
Goals shape the best heat type more than anything else. If you want the traditional ritual and the cardiovascular evidence base — Finnish heat, steam, and löyly — a traditional electric or wood-fired sauna is the answer. If you prioritise daily recovery, lower heat tolerance, or faster sessions, infrared (particularly far or full-spectrum) is more practical. If respiratory health or skin hydration is the driver, a steam room earns serious consideration. For a goal-based comparison of home sauna types, see the dedicated guide at what is the best type of home sauna. For first-time sauna owners working through the whole decision from scratch, the best home sauna for beginners guide covers the basics.
Step 2: Match heat preference to type
Try before you buy if at all possible. A 20-minute session in a traditional Finnish sauna at 85°C feels entirely different from a 30-minute infrared session at 55°C. Many spa facilities offer both. High-heat tolerance and preference for the steam ritual points clearly to traditional; sensitivity to hot air, preference for gentler ramp-up, and priority on session frequency points to infrared.
Step 3: Assess your space
A compact indoor infrared prefab can fit in a 120 cm × 120 cm (4 ft × 4 ft) corner of a spare room; a two-person outdoor cabin typically requires a 200 cm × 200 cm (6.5 ft × 6.5 ft) footprint plus clearance. Indoor units need adequate ventilation and a level floor. Outdoor builds need a suitable, level base (concrete pad or gravel bed), weatherproof electrical supply, and sometimes a building permit; check your municipal requirements before committing. Ceilings should clear 210 cm (7 ft) for comfortable benching without head heat.
Step 4: Set a realistic budget
For a durable, useable home unit, budget at minimum $3,000–$5,000 CAD for a quality infrared cabin, $5,000–$12,000 for a cedar barrel, and $8,000–$30,000+ for a full outdoor cabin with electrical. Portable units start under $500 but deliver a fundamentally different experience. Factor in installation, electrical work (a dedicated 240V circuit for traditional saunas), and, for outdoor builds, the foundation and any weather-rated wiring.
Step 5: Confirm material and build quality
Grade-A Canadian cedar is the benchmark interior material for traditional and barrel saunas: it resists rot, manages moisture well, stays splinter-free, and releases a pleasant aromatic heat. Canadian hemlock is a stable, knot-free alternative. For infrared, the heater technology (carbon vs. ceramic panel, EMF levels, panel coverage) matters as much as the wood. Look for clear, verified EMF specs; ask for third-party test data rather than marketing language.
6-Step Buyer Checklist Before You Commit
Before finalising any sauna purchase, work through this checklist to avoid the most common post-purchase regrets.
- Confirm the electrical supply. Traditional electric saunas typically require a dedicated 240V / 30–60A circuit. Infrared units range from 120V/20A for 1-person up to 240V/30A for larger cabins. Know your panel capacity before ordering — adding a sub-panel adds cost and timeline.
- Check the material certification. Ask for the wood species, kiln-drying specification, and any adhesive or finish ingredients. Cedar and hemlock from certified sustainable sources are the standard; avoid saunas where the wood species and adhesive type are unstated.
- Verify EMF specifications (for infrared). A reputable infrared sauna manufacturer will publish measured EMF levels in milligauss, ideally verified by a third party. Low-EMF panels typically measure under 3 mG at bench position; ask for the test report, not just the label.
- Confirm warranty terms and parts availability. A heater or panel warranty of at least 3–5 years is reasonable; better manufacturers cover the cabinet for longer. Verify that replacement heater elements, panels, and controls are available and that the manufacturer has Canadian customer service.
- Check the installation footprint against your space. Measure twice: the cabin exterior, the clear door swing, and the electrical entry point. Outdoor barrel saunas need a stable, level pad and at least 30 cm of clearance from combustibles on all sides.
- Plan the accessories before purchase. A sauna thermometer, hygrometer, wooden bucket and ladle (for traditional), a good birch whisk (vihta), and quality cedar headrests make the experience. Browse the Calore sauna accessories collection to kit out the room before the first session.
Expert Verdict: Match the Heat to the Ritual, Then the Structure to the Space
The landscape of sauna types is genuinely wide — traditional Finnish electric, wood-fired, near-/mid-/far-infrared, steam, barrel, cabin, indoor prefab, portable — but the decision framework is not complicated once you separate heat mechanism from enclosure format. Choose your heat first: traditional Finnish heat if you want the steam ritual and the strongest cardiovascular evidence base; infrared if you prioritise daily accessibility, faster warm-up, and gentler temperatures; steam if respiratory and skin hydration are the goal. Then choose your structure: barrel or outdoor cabin for garden and outdoor lifestyle; indoor prefab for basement or spare room; portable for trial or rented space. The evidence for sauna’s cardiovascular associations is compelling but observational — it supports building a ritual, not a medical programme. Use it as motivation to heat up consistently, cool down deliberately, and integrate the practice into a broader wellness routine. Browse the full range of Calore cedar builds, infrared cabins, and outdoor barrels at the Calore sauna collection. Key finding: the right type of sauna is the one that matches your heat tolerance, your space, and a session cadence you will actually maintain — because frequency matters far more for outcomes than which heat technology sits behind the door.
Frequently Asked Questions
What type of sauna is the best?
There is no single best type of sauna for everyone. Traditional Finnish saunas deliver the most intense, authentic heat experience at 70-90 degrees Celsius and suit those who enjoy steam and high temperatures. Infrared saunas operate at gentler temperatures, around 50-65 degrees Celsius, and are well-suited for daily use, recovery, and heat-sensitive users. Steam rooms excel for respiratory comfort. Barrel and cabin saunas outdoors are best for those with garden space who want the social, Finnish-style ritual. The right choice depends on your heat tolerance, wellness goals, available space, and budget.
What are the three types of saunas?
The three primary categories are traditional dry saunas, infrared saunas, and steam rooms. Traditional dry saunas heat air and sauna stones to 70-90 degrees Celsius with low humidity; bathers add water to the stones to create bursts of steam called loyly. Infrared saunas use radiant panels to warm the body directly at lower air temperatures of roughly 50-65 degrees Celsius, without heating rocks or using steam. Steam rooms use a generator to fill an enclosed space with water vapour, producing near-100 percent humidity at temperatures of around 43-49 degrees Celsius.
What is healthier, steam or infrared sauna?
Both formats have real, studied benefits, and neither is universally healthier. Infrared saunas have been associated in observational research with cardiovascular and relaxation benefits similar to those studied in traditional Finnish sauna users, and their lower air temperatures make sessions accessible for more people. Steam rooms are particularly useful for respiratory comfort and skin hydration. The cardiovascular evidence base is strongest for traditional Finnish-style heat bathing, based on long-term Finnish cohort studies such as those by Laukkanen et al. published in JAMA Internal Medicine and Mayo Clinic Proceedings. As always, consult your physician if you have any health conditions before beginning regular sauna use.
What kind of sauna is good for high blood pressure?
People with high blood pressure or cardiovascular conditions should consult a physician before using any sauna. That said, some observational research, including the Laukkanen 2018 review in Mayo Clinic Proceedings, has found associations between regular sauna use and reduced cardiovascular risk factors in healthy adults. Infrared saunas, with their lower air temperatures around 50-65 degrees Celsius, may feel more tolerable than traditional saunas, but heat still raises heart rate and dilates blood vessels. Always get medical clearance first, start with short sessions, and never combine alcohol with sauna use.
Which is healthier, steam or dry sauna?
Most of the published cardiovascular and longevity research has been conducted on traditional dry Finnish saunas, not steam rooms. The large Finnish cohort studies by Laukkanen and colleagues tracked traditional sauna bathers and found associations between frequent sessions and reduced risks of cardiovascular events and all-cause mortality, though these are observational findings and do not prove causation. Steam rooms have evidence for respiratory benefit and skin hydration. Both forms carry heat-stress risks for vulnerable populations. If research-backed cardiovascular data is your priority, the evidence sits more solidly behind the traditional dry Finnish model.
How do I choose between an indoor and outdoor sauna?
The choice between indoor and outdoor comes down to space, climate, and the experience you want. Indoor saunas, including infrared cabins and compact prefab rooms, are easier to install, do not require weatherproofing, and integrate into existing rooms or basements. Outdoor saunas, such as barrel saunas and cabin-style builds, offer more design freedom, larger capacities, and a more immersive Nordic-style ritual, but require a weatherproof electrical supply, proper drainage, and a suitable base. In cold Canadian winters, outdoor units with proper insulation and rated electrical components handle year-round use well.
