Essential Tips for Effective Sauna Maintenance and Care
Keep your sauna clean, safe, and performing at its best with these must-know maintenance and care tips.
Essential tips for effective sauna maintenance and care include wiping benches dry after every session, deep-cleaning floors weekly, inspecting wood monthly for moisture retention, replacing sauna rocks every one to two years, and never using chemical cleaners inside the cabin. Consistent ventilation after each use prevents mold and extends the life of both hemlock and cedar interiors.
- Sauna maintenance is not complicated, but skipping it leads to warped wood, mold, and a unit that fails years before it should.
- A two-minute wipe after each use prevents most long-term staining, since sweat oils and salts work into untreated wood and become progressively harder to remove.
- Repeated thermal expansion from water contact cracks sauna rocks over time, and fragments falling into the stove elements cause uneven heating and potential damage.
- 30 to 60 minutes, door open: Leaving the door ajar for at least 30 to 60 minutes after every session lets moisture-laden air escape and is the main defense against mold and bench warping.
- Annual electrician inspection, 240V circuits: Traditional stoves run on 240V circuits and need a licensed electrician to check the wiring and connections once a year, because a loose connection in a hot environment is a real fire risk.
Where to start
Medical Breakthrough Traditional 7 v2a: Traditional 3 Person Sauna Hemlock Wood, Bluetooth Audio, Rapid Heating
Golden Designs Kaarina 6 Person Barn Outdoor Traditional Sauna (GDI-8506-01)
Why Sauna Maintenance Is Worth Doing Properly
A well-maintained sauna performs better, lasts longer, and stays genuinely safe to use. Skip the upkeep and you are looking at warped wood, degraded heater elements, mold behind the benches, and eventually a unit that needs to be replaced far earlier than it should. The good news is that the maintenance routine for most home saunas is not complicated. It just needs to be consistent.
The specifics vary depending on what type of sauna you own. A traditional steam sauna introduces water and high humidity into the equation, which means wood care and drainage become priorities. An infrared unit runs dry, so the focus shifts more to surface cleaning and heater panel upkeep. Both types share a core set of habits around ventilation, cleaning schedules, and electrical safety. This article covers all of it in practical terms, with specific details drawn from the equipment itself.
Your Routine Cleaning Schedule: What to Do and How Often
After every session, wipe down the benches and backrest with a clean, dry towel or a lightly damp cloth. Sweat contains oils and salts that work their way into untreated wood over time, leaving behind an odor and a surface that becomes progressively harder to clean. A quick wipe after each use takes about two minutes and prevents the majority of long-term staining.
Once a week, do a more thorough clean. Sweep or vacuum the floor to remove dead skin cells, dust, and anything tracked in from outside. If your sauna has a floor drainage system (the Auroom Arti outdoor cabin includes one specifically to simplify this), rinse the floor and let it dry fully before the next session. For units without drainage, use a damp mop with plain water and leave the door open for at least an hour afterward.
Monthly, inspect the benches and walls for any discoloration, soft spots, or areas where the wood feels damp longer than it should. These are early signs of moisture retention, and catching them early is much easier than treating established mold. Sand down any rough patches that have developed from repeated scrubbing, using fine-grit sandpaper. This also refreshes the wood's natural appearance.
Wood Care: How to Keep Hemlock and Cedar in Good Shape
The wood is doing more than looking good. It is regulating moisture, providing insulation, and absorbing the heat that then radiates back to you. Both Canadian Hemlock and Canadian Red Cedar, the two species used across most of the traditional saunas here, are naturally resistant to moisture and decay. But "naturally resistant" does not mean maintenance-free.
Hemlock, used in the Medical Breakthrough Traditional 7 v2a and the Medical Breakthrough 7 Plus, is a fine-grained, stable wood that handles repeated heat cycles well. Cedar, used in both Golden Designs Barn Series models, produces its characteristic aromatic oils as it heats up, which contributes to the sensory experience of a session. That aroma fades over time as the oils are released, which is normal. What is not normal is the wood starting to darken in patches or smell musty.
Avoid applying oils, varnishes, or sealants to interior surfaces. The interior runs hot enough that treated wood can produce fumes, and sealants prevent the wood from breathing the way it is designed to. On exterior surfaces of outdoor units, a UV-resistant outdoor wood treatment applied once a year will protect against weathering. The Golden Designs Kaarina and Savonlinna use an all-weather exterior finish that handles rain and temperature swings, but that exterior still benefits from an annual inspection for cracking or peeling.
If you notice benches developing a grey or silvery tone, that is oxidation from UV exposure or repeated moisture cycles. Light sanding with 120-grit paper followed by 220-grit will bring the surface back without removing significant material. Do this when the sauna is completely cool and dry, and air the unit out thoroughly before the next use.
Heater and Stove Maintenance: What Actually Needs Attention
The heater is the heart of a traditional sauna, and it gets more abuse than any other component. Traditional stoves run at high temperatures repeatedly, cycle through wet-dry sequences when water is poured on the rocks, and generally ask a lot of their materials over years of use.
Sauna Rocks
Sauna rocks need to be inspected and replaced on a regular cycle, typically every one to two years depending on how often you use the unit. When water hits a hot rock, it causes rapid thermal expansion and contraction. Over time this cracks the rocks, and small fragments can fall into the stove elements below, creating uneven heating and potential damage. Check the rocks by looking for visible cracks, crumbling edges, or a powdery surface. Any rock showing those signs should come out. Replacements should always be purpose-made sauna stones. Regular garden rocks or river stones are not the right density or mineral composition and can shatter violently under heat.
When re-stacking the rocks, position the larger ones at the bottom and smaller ones toward the top, leaving some air gaps between them. This allows heat to circulate evenly through the pile rather than building up in one spot. The North Shore Sauna Dome tent, which accommodates 70 to 80 pounds of rocks, is a useful reference for understanding how much surface area proper rock stacking actually involves at the larger scale.
The Stove Itself
For electric stoves like the 8.0 kW units in the Golden Designs Kaarina and Savonlinna, wipe down the exterior of the stove housing periodically with a dry cloth. Keep the area immediately around the stove clear of wood debris and dust. Never pour water directly onto the stove body, only onto the rocks. Check the electrical connections at the stove once a year, either yourself if you are comfortable doing so or as part of a professional electrical inspection. Both Golden Designs outdoor models specify a 240V/40A circuit for the stove, and that connection should be tight and free of corrosion.
For infrared units like the Medical Breakthrough 7 Plus, the heating panels themselves rarely need hands-on attention, but keep them free of dust by wiping with a dry microfiber cloth when the unit is fully cool. Avoid getting any moisture on the panels. The full-spectrum heaters in that unit are designed for even distribution, and blocking part of the surface with dust buildup can affect that consistency over time.
Ventilation: The Factor Most People Underestimate
Proper airflow inside a sauna does two things: it keeps the heat distribution consistent during a session, and it allows the interior to dry out completely afterward. A sauna that does not dry out between uses is a sauna that develops mold, warps its benches, and starts to smell within months.
After every session, leave the door slightly open for at least 30 to 60 minutes. If your unit has adjustable vents, open them fully during this cooldown period. The goal is to let moisture-laden air exit and dry air enter. In humid climates, this may take longer. If you are using an outdoor unit like the Golden Designs Barn Series models, make sure the exterior area around the sauna has reasonable drainage and airflow so that the outside of the unit also gets a chance to dry.
Indoor saunas, including the Medical Breakthrough Traditional 7 v2a designed for indoor installation, should ideally be placed in a room with its own ventilation. A bathroom exhaust fan running after sessions makes a real difference. If the room feels humid or smells like sauna for hours after a session, that is a ventilation problem worth addressing before it becomes a mold problem.
Electrical Safety: What to Inspect and When
Home saunas are high-draw appliances. Traditional stoves typically run on 240V circuits, and the connections involved need periodic inspection. This is not an area to be casual about. A loose or corroded connection generates heat at the junction point, and in a sauna environment that is already hot and occasionally damp, that is a meaningful fire risk.
Once a year, have a licensed electrician inspect the dedicated circuit, the breaker, and the wiring at the stove connection. Both the Golden Designs Kaarina and the Savonlinna specify 240V/40A for the stove and a separate 120V/15A circuit for lights and the control system. That separation exists for good reason, and both circuits need to be checked. The control panel side is easy to overlook because it draws much less power, but it handles the Bluetooth, LED lighting, and FM connectivity that make daily use comfortable.
For infrared saunas, check that the power cord and any plug connections are free of discoloration, which indicates heat damage, and that nothing is pinched or kinked. The Medical Breakthrough 7 Plus uses full-spectrum infrared panels that operate continuously during a session, and the wiring to those panels should be inspected as part of any annual check. If you notice any flickering in the heater panels, inconsistent heating zones, or a breaker that trips during use, stop using the unit until the electrical system has been checked.
How to Deep Clean a Home Sauna Without Damaging It
A proper deep clean a few times a year does what routine wiping cannot. The goal is to remove accumulated residue from the benches and walls, address any early discoloration, and ensure the interior smells fresh.
Cool the sauna completely
Never clean a warm sauna interior. Let it cool for at least two hours after the last session, then open the door and vents to allow fresh air to circulate before you start.
Remove all accessories
Take out buckets, ladles, headrests, and any towels or seating pads. Clean these separately. Wooden accessories like the bucket and ladle included with the Golden Designs models can be rinsed and left to air dry outdoors.
Scrub the benches
Use a stiff brush with warm water and a small amount of mild soap. Scrub along the grain of the wood, not across it. Rinse with clean water and dry with a towel. For stubborn dark spots, light sanding with fine-grit paper works better than more aggressive scrubbing.
Clean the walls and floor
Wipe down the interior walls with a damp cloth. Pay attention to the lower sections near the floor where splashed water collects. For units with floor drainage, flush the drain with clean water. For those without, mop and dry thoroughly.
Air out fully before next use
Leave the door open for several hours, ideally overnight. The interior must be completely dry before the next heating cycle. Running a damp sauna accelerates wood degradation significantly.
Outdoor-Specific Maintenance: What Changes When the Unit Is Outside
Outdoor saunas face weather, UV exposure, temperature swings, and insects, none of which are concerns for an indoor unit. The Golden Designs Kaarina (six-person) and Savonlinna (three-person) both use an all-weather exterior, which handles the bulk of environmental stress, but the owner still has responsibilities. Choosing between an outdoor cabin versus a barrel or cube format also affects what maintenance the exterior requires year to year.
Inspect the roof at least twice a year, in spring and autumn. Look for lifting panels, gaps at the seams, or debris accumulation that is holding moisture against the surface. Clear leaves and organic matter from around the base of the unit, since decomposing debris raises humidity at ground level and accelerates wood decay in the lowest boards. If the sauna sits on a gravel or paver base, check that the base has not shifted and that water is still draining away from the unit rather than pooling underneath it.
The bronze privacy tempered glass door on both Golden Designs outdoor models should be wiped down with a glass cleaner applied to the cloth rather than sprayed directly. Keep the door hinges and latch mechanism free of rust with a light application of silicone-based lubricant once a year. Avoid oil-based lubricants near the door seal, as they degrade rubber gaskets over time. In regions with heavy snowfall, clear snow from the roof before it can accumulate to a significant weight. Most residential outdoor sauna roofs are not engineered for sustained snow load.
If you own a larger backyard sauna and tend to use it year-round, the seasonal inspection routine becomes especially important. Winter use actually helps keep wood conditioned through regular heat cycling, but the transition periods, particularly late autumn when temperatures are variable, are when moisture damage most commonly starts.
Managing Humidity in a Traditional Sauna
Pouring water on the rocks, known as löyly in Finnish tradition, is one of the defining experiences of a traditional sauna. It creates a burst of steam that raises the perceived temperature and opens the pores dramatically. From a maintenance standpoint, it also introduces the most moisture into the interior, and doing it thoughtlessly accelerates wear on the wood and stove.
Use modest amounts of water, a ladle or two at a time, distributed evenly across the top of the rock pile. Avoid pouring water onto the stove housing, the wall behind the stove, or the floor around the stove. These surfaces are not designed for repeated water contact the way the rocks are. The ideal temperature range for rock pouring is between 170 and 185°F for most traditional stoves, which is exactly the range both Golden Designs outdoor units recommend for best results. The Medical Breakthrough Traditional 7 v2a's Ultra-High Performance Stove can reach 194°F, at which point steam generation is extremely vigorous and less water is needed per ladle.
After a steam-heavy session, ventilation is even more critical. The interior walls absorb moisture during a session and need time to release it. Do not assume that because the temperature was high, the interior dried out on its own. Steam sessions deposit more water than dry sessions, full stop, and require a longer post-session airout. Browse the full sauna range to compare models that include built-in ventilation features alongside their steam capabilities.
Infrared Sauna Maintenance: A Different Set of Priorities
Infrared saunas like the Medical Breakthrough 7 Plus run without steam, which changes the maintenance picture considerably. There is no stove, no rocks, and no steam to manage. The wood still needs wiping down after sessions, but moisture-related wear is much less of a concern. What infrared owners need to stay on top of is heater panel integrity and surface cleanliness.
The full-spectrum infrared heaters in the Medical Breakthrough 7 Plus emit near, mid, and far infrared wavelengths, and the panels should remain unobstructed. Do not lean towels or clothing against the heater panels during a session. Fabric contact affects heat distribution and can create a localized hot spot. Chromatic therapy lighting systems, also featured on the 7 Plus, require no active maintenance beyond ensuring the LED fixtures are dust-free and that any visible wiring remains undisturbed during cleaning.
The main difference between infrared care and traditional care is that infrared interiors stay drier, which means the wood tends to stay in better condition over time with less intervention. However, that same dryness means the wood can dry out and crack if the unit is stored for extended periods in a low-humidity environment. If you are not using the sauna for several weeks, a brief 15 to 20-minute session once a week keeps the wood conditioned and the heaters cycling as intended. Infrared owners looking at additional recovery tools often pair their sauna with cold plunges for contrast therapy, and the maintenance demands of both are manageable with a consistent routine.
Long-Term Care: What Extends the Life of Your Sauna
The difference between a sauna that lasts eight years and one that lasts twenty comes down almost entirely to how consistently it is maintained. The equipment itself, particularly units built from natural Canadian Hemlock or Red Cedar with quality electric stoves, is durable. The wood and stove are not the weak points. Neglect is.
A few habits make the biggest long-term difference. Using a towel on the bench every session, rather than sitting directly on bare wood, reduces oil and sweat absorption dramatically. Keeping sessions within the recommended temperature range avoids unnecessary stress on wood joints and electrical components. The right model for your household size also matters because consistently running a three-person unit at capacity every day stresses it more than a six-person unit used by the same household.
For traditional sauna kit installations, the assembly quality at the start influences how well the unit holds up over years of use. Panels that are not sealed or fitted correctly create small gaps where moisture infiltrates, and those gaps compound over time. If you assembled your own unit, it is worth spending 20 minutes checking the fit of the wall panels and bench supports once a year, tightening any fasteners that have worked loose through repeated heat cycling.
Finally, keep a simple maintenance log. Record when you cleaned the rocks, when the benches were sanded, when the electrical was last inspected, and when you replaced anything. It takes a minute to update and makes it much easier to catch when something is overdue. Sauna maintenance does not need to be complicated, but it does need to happen on a predictable schedule. The routine is simple enough that once it becomes a habit, most owners barely notice the time it takes.
More saunas worth a look
Medical Breakthrough 7 Plus 4-6 Person Infrared Sauna - Full-Spectrum, Chromatic Therapy & Audio System
Golden Designs Savonlinna 3 Person Barn Outdoor Traditional Sauna (GDI-8503-01)
Frequently asked questions
Is regular sauna maintenance really necessary, or can I get away with minimal upkeep?▾
Skipping maintenance leads to real problems: warped wood, degraded heater elements, mold behind the benches, and a unit that needs replacing far sooner than it should. A consistent routine is not complicated, it just needs to happen. Two minutes wiping down benches after each session prevents the majority of long-term staining and odor buildup.
What cleaning products are safe to use inside a sauna?▾
Plain water handles most of the work, and a mild natural soap is fine for stubborn spots as long as you rinse thoroughly. Never use chemical cleaners, bleach, or disinfectant sprays inside the cabin. At sauna temperatures, those products leave residues that off-gas into the air you are breathing during a session.
How much does a quality home sauna cost, and what should I budget for?▾
The saunas carried by Peak Primal Wellness range from around $8,999 for the Golden Designs Savonlinna 3-person outdoor barn sauna up to $12,799 for the Medical Breakthrough 7 Plus full-spectrum infrared model. Pricing depends on capacity, heater type, and whether the unit is designed for indoor or outdoor use.
What does the setup process involve for an outdoor traditional sauna?▾
Outdoor models like the Golden Designs Kaarina and Savonlinna are delivered curbside on a pallet by a freight carrier, so you will need to plan for moving the unit from the curb to its permanent location. Both models require a 240V / 40AMP electrical connection for the stove and a separate 120V / 15AMP circuit for the lights and audio controls, so consulting a certified electrician before installation is essential.
What are the ongoing running costs for a home sauna?▾
The main ongoing cost is electricity. The Golden Designs Kaarina and Savonlinna both use an 8.0 kW stove, so your per-session cost depends on your local electricity rate and how long you run the unit. Beyond electricity, budget for sauna rocks every one to two years and occasional fine-grit sandpaper for wood upkeep. Neither expense is substantial.
How do I maintain the wood inside my sauna to keep it in good condition?▾
Never apply oils, varnishes, or sealants to interior wood surfaces. At sauna temperatures, treated wood can produce fumes, and sealants prevent the wood from breathing the way it is designed to. If benches develop a grey or silvery tone from oxidation, light sanding with 120-grit paper followed by 220-grit will bring the surface back without removing significant material. Do this only when the sauna is completely cool and dry.
How do I know what size sauna is right for my household?▾
Capacity ranges from 3 to 6 people across the models on this page. A 3-person unit like the Medical Breakthrough Traditional 7 v2a or the Golden Designs Savonlinna suits most households where one or two people will be using it regularly. If you plan to use it with family or a group, the Golden Designs Kaarina at 6-person capacity or the Medical Breakthrough 7 Plus at 4 to 6 persons gives everyone enough room to sit comfortably without the session feeling cramped.
What is the most common mistake people make when maintaining a sauna?▾
Pouring water directly onto the stove body rather than onto the rocks is one of the most common errors in traditional sauna use, and it can damage the stove housing over time. Another frequent mistake is using cracked or wrong-type rocks. Purpose-made sauna stones are required because regular garden rocks or river stones can shatter violently under the thermal stress of repeated heat and water cycles.
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