A quality infrared sauna represents a significant investment in your health and home, and with proper maintenance, it can provide years—even decades—of reliable service. The good news is that infrared saunas are relatively low-maintenance compared to traditional steam saunas, as they operate at lower humidity levels and don't use water directly in the heating process.
This guide covers everything you need to know about maintaining your infrared sauna, from routine cleaning to wood care, heater maintenance, and electrical safety. Following these guidelines will help preserve your sauna's performance, appearance, and hygiene for the long term.
Understanding Your Sauna's Materials
Before diving into maintenance procedures, it helps to understand the materials in your sauna and why they need different types of care:
Wood Types
Most infrared cabin saunas use untreated softwoods chosen for their low heat conductivity (so they remain comfortable to touch) and natural resistance to bacteria and moisture. Common choices include:
- Canadian Hemlock: Light-coloured, hypoallergenic, and affordable. Requires careful moisture management.
- Western Red Cedar: Naturally antimicrobial with a pleasant aroma. More resistant to moisture and bacteria but more expensive.
- Basswood: Hypoallergenic and very soft. Popular for those with chemical sensitivities.
Heater Panels
Carbon fibre and ceramic heaters are durable but should never be cleaned with wet cloths or sprayed with water. They're designed to radiate heat efficiently and generally require minimal maintenance beyond keeping them dust-free.
Infrared sauna maintenance is primarily about prevention. Regular, light cleaning after use is far easier and more effective than occasional deep cleaning. Establishing good habits from the start will save you time and effort in the long run.
After Every Session
The most important maintenance happens immediately after each use, when the sauna is still warm and surfaces are easier to clean:
Wipe Down Surfaces
Use a dry or slightly damp towel to wipe down bench seats, backrests, and any surfaces you've touched. This removes sweat before it can soak into the wood and prevents salt deposits from forming as sweat evaporates.
Leave the Door Open
After wiping down, leave the sauna door open to allow moisture to escape and the interior to dry completely. This typically takes 15-30 minutes depending on your climate and the session's humidity level. Never close the door while surfaces are still damp.
Use Towels During Sessions
The best way to minimise post-session cleaning is to sit on towels during your session. This absorbs most sweat before it reaches the wood. Use a separate towel for your back against the backrest.
Post-Session Routine (5 minutes)
- Wipe benches and backrests with a dry towel
- Collect any used towels for laundering
- Leave door open until interior is dry
- Check floor for any moisture and wipe if needed
Weekly Maintenance
Once a week, give your sauna a more thorough cleaning:
Vacuum the Floor
Use a vacuum or broom to remove dust, hair, and any debris from the floor. This prevents buildup that can affect air quality and makes the space feel fresh.
Wipe Interior Surfaces
Using a damp cloth (not wet), wipe down all wooden surfaces including walls, benches, and door frames. If you need extra cleaning power, use a solution of water with a small amount of white vinegar (about 1 tablespoon per cup of water). Never use chemical cleaners, bleach, or soaps on the wood—these can damage the finish and leave residues that emit fumes when heated.
Clean the Glass
If your sauna has a glass door or windows, clean them with a natural glass cleaner or the same water-vinegar solution. Wipe dry to prevent streaks.
Check Heater Panels
Visually inspect heater panels for dust buildup. If dusty, allow them to cool completely, then gently wipe with a dry, soft cloth. Never use water or cleaning products on heater elements.
Monthly Maintenance
Once a month, perform a more comprehensive check:
Wood Conditioning
Depending on usage frequency and your climate, the wood may occasionally benefit from light conditioning. If the wood appears dry or dull, you can apply a very thin coat of food-grade mineral oil to benches and high-contact areas. Use sparingly—a little goes a long way. Wipe off any excess and allow to dry before the next use.
Never use furniture polish, wood stains, varnishes, or oils that aren't food-grade. These products can emit harmful vapours when heated and may damage the wood's natural properties.
Inspect Hardware
Check door hinges, handles, and any screws or bolts for looseness. The heating and cooling cycles can cause hardware to loosen over time. Tighten as needed with appropriate tools.
Examine Electrical Components
Visually inspect the power cord for any damage, fraying, or discolouration. Check that the plug fits securely in the outlet. If you notice any electrical issues, discontinue use and contact a qualified electrician or your sauna manufacturer.
Dealing with Common Issues
Sweat Stains and Discolouration
Over time, even with good towel use, some discolouration may occur on high-contact areas. For light stains, try gentle sanding with fine-grit sandpaper (220 grit or higher), sanding in the direction of the wood grain. This removes a thin layer of surface wood and can restore a fresh appearance. Wipe away dust thoroughly before the next use.
Odours
If your sauna develops an unpleasant smell, first ensure it's drying properly after each use. For persistent odours, run the sauna empty at maximum temperature for 30-45 minutes with the door slightly open to promote air circulation. The heat will help dissipate odours. For stubborn smells, sprinkle baking soda on affected surfaces, leave overnight, then vacuum thoroughly.
Mould or Mildew
Mould growth indicates a moisture problem—likely the sauna isn't drying properly between uses. Address this immediately: clean affected areas with diluted hydrogen peroxide (3%), allow to dry completely, and improve ventilation. If mould is extensive or returns repeatedly, consult a professional.
Cracks in Wood
Minor surface cracks are normal as wood expands and contracts with temperature changes. They typically don't affect performance. For splinters or larger cracks, gentle sanding can smooth rough edges. If structural cracks appear in bench supports or load-bearing areas, contact your manufacturer.
Australian homes can have highly variable humidity. In very dry climates (like inland areas), occasional light misting of walls with water can help prevent excessive drying and cracking. In humid coastal areas, ensure extra attention to ventilation and drying.
Seasonal Deep Clean
Two to four times per year, give your sauna a thorough deep clean:
- Remove and launder all towels and seat pads
- Vacuum all surfaces including walls and ceiling
- Clean all surfaces with diluted vinegar solution
- Inspect all wood for damage, stains, or wear
- Check and tighten all hardware
- Test all controls and temperature sensors
- Clean or replace any filters (if your model has them)
- Run an empty session to ensure everything works properly
When to Call a Professional
Most maintenance can be done yourself, but some situations require professional help:
- Electrical problems, including burning smells, sparks, or inconsistent heating
- Heater panels that don't warm up or have visible damage
- Persistent mould that doesn't respond to cleaning
- Structural damage to the cabin frame
- Control panel malfunctions
Always consult your manufacturer's warranty before attempting repairs, as DIY fixes may void coverage.
Long-Term Care
With consistent maintenance, your infrared sauna should provide many years of trouble-free operation. The keys are simple: keep it clean, keep it dry, and address small issues before they become big ones. Most owners find that the maintenance becomes second nature—a quick post-session wipe-down takes just a few minutes and becomes part of the relaxation ritual.
For more information on getting the most from your sauna, see our guides on preparing for sessions and installation considerations.