Maintenance & repair

How to Clean a Sauna: A Practical Maintenance Guide

5 min read

Glass-front sauna with accessible timber benches and floor slats for cleaning

Maintaining the pristine condition of your sauna is essential for a consistent, relaxing experience. At VertexAir Climate Systems, we specialise in UK-wide traditional and infrared sauna installations, and we know that routine care is the secret to longevity. Whether you manage a commercial facility or enjoy a private garden sanctuary, keeping your cabin hygienic and well-maintained prevents wear and ensures your equipment operates safely. This guide outlines the fundamental cleaning and maintenance steps required to keep your sauna environment welcoming and structurally sound for years to come.

Establishing a Daily Cleaning Routine

A daily cleaning habit is the most effective way to manage sauna hygiene, especially in busy commercial environments. After every session, remove all towels and ensure the benches are wiped down with a soft, damp cloth to remove perspiration and surface debris. This prevents moisture buildup, which can cause long-term timber staining or bacterial growth in high-traffic cabins.

Always leave the door slightly ajar once the sauna is powered off to allow residual heat and air circulation to dry the interior surfaces completely. If your setup includes an exhaust ventilation system, verify that it is running, as efficient moisture removal is critical for maintaining timber integrity and preventing odours from developing over time.

Monthly Deep Cleaning Procedures

On a monthly basis, a deeper, more comprehensive clean is required to reach areas often missed during daily routines. Use a vacuum to remove dust and debris from the floor corners and beneath the benches, as these spaces can harbour particles that affect air quality. When wiping down timber surfaces, use only manufacturer-approved cleaning agents designed specifically for sauna environments.

Avoid using standard household detergents, as their chemicals can penetrate porous wood fibres and emit unpleasant fumes when the sauna heats up. Ensure that all surfaces are thoroughly rinsed and allowed to air-dry fully before the next use. Regular inspections during this deep clean allow you to spot early signs of wear or timber splintering.

Managing Your Sauna Heater and Stones

The heater is the heart of your sauna, and its care requires strict adherence to safety protocols. If you notice any irregularities, such as an unusual burning smell, excessive smoking, or the heater failing to reach temperature, cease usage immediately. Do not attempt to reset tripped electrical breakers or bypass safety interlocks; these are signs that your system requires an expert, fully qualified electrician to investigate.

For traditional heaters with stones, check them periodically for signs of cracking or crumbling. Over time, stones lose their heat-retention capacity and should be replaced to ensure optimal energy efficiency. Always ensure the heater is completely cool and isolated from the mains before inspecting the stone compartment or brushing away any debris that may have collected within the heating elements.

Preserving Sauna Timber and Glass

The wood in your sauna is a living material that reacts to temperature fluctuations. While it is naturally durable, it benefits from occasional maintenance. Never use pressure washers or abrasive materials, as these will permanently damage the surface finish and accelerate degradation. If you observe dark patches, consult a specialist rather than applying unapproved oils or coatings, which may release toxic vapours under high heat.

For glass doors and panels, use a mild, streak-free glass cleaner that is safe for heat-resistant glass. Inspect door hinges and seals every few months to ensure they remain secure and airtight. A well-sealed cabin maintains heat more efficiently, reducing the strain on your heater and contributing to a more consistent, comfortable bathing environment.

Annual Specialist Servicing and Assessment

While routine operator cleaning keeps a sauna fresh, annual specialist servicing is vital for safety and performance. A qualified professional should conduct a full inspection of electrical connections, sensors, and structural integrity. This is particularly important for commercial saunas in hotels or gyms, where usage levels are higher and wear is accelerated. Our technicians verify that all safety devices are functioning correctly.

Documentation of these inspections is a crucial component of any professional maintenance regime. By keeping records of servicing, you ensure that your facility remains compliant with safety standards. Scheduling an annual review allows you to address minor issues before they become expensive repairs, protecting your initial investment and providing peace of mind for all sauna users.

Electrical Safety and Regulatory Compliance

All electrical work associated with your sauna must be carried out by a fully qualified electrician. In England, electrical safety in dwellings is governed by Part P of the Building Regulations, which sets high standards for installation and testing. Never attempt to perform your own electrical repairs or modify safety devices; doing so risks severe injury and invalidates equipment warranties or safety certifications.

Sauna electrical systems involve high loads, and any DIY interference can lead to dangerous faults or fire hazards. Always prioritise professional installation and repair to ensure your sauna meets the necessary UK safety guidelines. If you are unsure about the state of your electrical components, isolate the supply safely and contact a professional immediately to prevent any risk to your property or users.

Professional Support for Sauna Care

VertexAir Climate Systems provides comprehensive support for all aspects of sauna ownership, from initial design to ongoing maintenance. We understand that your sauna is a significant asset, and our team is committed to helping you maintain it to the highest standard. Whether you require a routine service check or advice on cleaning supplies, our experts are here to provide tailored assistance.

Do not leave your sauna's health to chance; entrust your equipment to those with the technical knowledge to keep it operating at peak efficiency. We offer professional servicing across the UK, ensuring your cabin remains a safe and relaxing sanctuary. Reach out to our team today to discuss your maintenance requirements or to schedule a professional inspection for your home or commercial wellness space.

Sources and further reading

All articles