The short answer
Commercial rooms stay open when maintenance is routine, recorded and done by the right person. This guide is the operator’s tool: what to check, how often, who does it and where to write it down. Our commercial sauna and steam room guide covers the planning side, including equipment selection, controls, hygiene, safety and handover.
- Every task has a source. Each routine below is labelled MANUFACTURER (with the maker and model), GENERAL GOOD PRACTICE (supported by several sources) or as your manuals specify. Where your equipment’s manual says something different, the manual governs.
- Intervals are not universal. Stone care and steam generator descaling depend on the model, water hardness and treatment, operating hours, use class and the condition found. Set them from your manuals and your own records.
- Staff check, clean and record. Licensed or authorised people repair. Repeated tripping, leaks, error codes and anything behind a cover are service calls.
How to read the labels
| Label | What it means |
|---|---|
| MANUFACTURER | Published by the maker for the named model or range. It applies to that equipment, not to other brands. |
| GENERAL GOOD PRACTICE | Supported by several independent sources, such as manufacturers’ manuals, overseas licensing conditions and public-health guidance. Adapt it to your site and risk assessment. |
| As your manuals specify | The task is real, but the method or interval differs between makers and models. Look it up in the manual for your equipment and write the answer into your schedule. |
Harvia figures are quoted because BSC Wellness is the Queensland agent for Harvia and specifies its equipment. Other makers set different methods and intervals, and one brand’s method must never be used on another brand’s equipment.
Daily routines
| Task | Label | Why it matters |
|---|---|---|
| Before opening, look into each room: nothing on or near the heater, guard in place, door closes, lights work | GENERAL GOOD PRACTICE; Harvia also requires the room and heater area to be checked before a remote or timed start | A towel or object left on a heater is a fire risk, and a remote start cannot see it. |
| Record the room temperature at opening and note how long the room took to heat | GENERAL GOOD PRACTICE | A room that heats more slowly than usual is often the first sign of stone, ventilation or element trouble. |
| Clean benches, backrests, handles and floors with approved products, and record it | GENERAL GOOD PRACTICE (overseas licensing conditions and public-health guidance call for daily cleaning) | Heavy use builds up sweat and soiling quickly, and records show the cleaning plan is followed. |
| Use only clean, household-quality water on sauna stones, and only sauna-water scents | MANUFACTURER (Harvia heater manuals: chlorinated water and seawater are not for use; ladle at most 0.2 litres) | Unsuitable water and oversized ladles damage stones and the heater, and can splash boiling water. |
| Steam rooms: confirm the automatic drain and rinse ran, look for leaks and note any service light | MANUFACTURER (Harvia HGX, HGD and HGP XW with the optional automatic discharge valve) and GENERAL GOOD PRACTICE | Flushing removes concentrated minerals before they settle as scale. A missed drain is an early warning. |
| At close, switch steam generators off at the control panel, not the isolator | MANUFACTURER (Harvia HGX, HGD and HGP XW: with the automatic discharge valve fitted, the generator drains and rinses for about 5 minutes after switch-off and needs power to do it) | Cutting the power at the isolator stops the post-use drain, leaving mineral-rich water in the reservoir. |
| Virta Combi heaters: drain the evaporator after each use once it has cooled, then dry the room | MANUFACTURER (Harvia Virta Combi HL70S/SA–HL110S/SA) | Draining removes concentrated impurities, and drying protects the timber. |
| Test the emergency call point | As your risk assessment specifies | An alarm that has failed quietly is found by testing, not in an emergency. |
Weekly routines
Weekly is a common starting point, not a manufacturer rule. Adjust it to your hours, bather numbers and what the log shows.
| Task | Label | Why it matters |
|---|---|---|
| Deep clean timber, duckboards, floor drains and grates | GENERAL GOOD PRACTICE | Drains and grates collect hair and residue that cause smells and slow drainage. |
| Inspect bench fixings, slats, heater guard, door closer, hinges, handles and signage | GENERAL GOOD PRACTICE | Commercial doors and benches take hundreds of uses a day; loose fixings and worn closers are injury risks. |
| Look at the sauna heater without opening it: stone fragments underneath, elements showing through the stones, lint or debris in the air openings | GENERAL GOOD PRACTICE; signs listed in Harvia heater manuals | These are the visible signs that stones need attention or airflow is restricted, before the heater overheats. |
| Check the steam outlet and clean it as the manual allows | MANUFACTURER (Harvia HGP: mild soap solution); otherwise as your manuals specify | A blocked or crusted outlet reduces steam and can spray hot water. |
| Check water softener salt and settings, where a softener is fitted | As the softener and generator manuals specify | Softening only works while it is maintained, and some generator warranties depend on water quality. |
| Review the week’s log for repeated faults, slow heat-up or rising service-light frequency | GENERAL GOOD PRACTICE | Patterns in the log show a developing problem while it is still a scheduled job. |
Operating-hour-based routines
Wear in commercial equipment follows hours of use, not the calendar. A room heated for 12 hours a day, seven days a week, runs about 84 hours a week. Some controls show total operating hours and hours since last service; record that figure every time you write in the log.
| Task | Label | Why it matters |
|---|---|---|
| Steam generator service reminder | MANUFACTURER (Harvia HGX, HGD and HGP XW: service light after 200 operating hours since the last service) | In a busy room 200 hours come round quickly. The light is a prompt to book the service, not a fault to clear. |
| Descale the steam generator | MANUFACTURER for the method (Harvia HGX, HGD and HGP XW: citric acid, 50–80 g per litre, about 1 hour, then rinse, as the manual describes); interval as your manual specifies, by water hardness and hours | Scale on the elements and level sensor is a leading cause of steam room breakdowns. Never use another brand’s descaling method. |
| Optional reservoir rinse during long running periods | MANUFACTURER (Harvia HGX, HGD and HGP XW with the automatic discharge valve: selectable every 0.5, 1, 2, 3 or 4 hours; steam pauses for more than 5 minutes during each rinse) | Intended for institutions running for hours at a time. Choose the setting with your service technician. |
| Re-stack and inspect sauna stones, remove fragments and replace broken stones | MANUFACTURER (Harvia heater manuals, including Virta Pro, Club Pro and Legend Pro: at least once a year, more often with frequent use; Harvia publishes no hours figure); interval as your manual and records specify | Crumbled or settled stones choke the airflow, so elements run hotter and can fail, and the heater can trip. |
Other heater makers publish commercial stone intervals in months or operating hours. Those figures belong to their heaters, not to Harvia’s; our commercial guide compares them, and our sauna stones guide shows what worn stones look like.
Periodic routines
| Task | Label | Why it matters |
|---|---|---|
| Empty the steam generator’s sediment cup | MANUFACTURER (Harvia HGX, HGD and HGP XW: users may do this, only after the generator has cooled for about 24 hours) | Sediment that builds up returns to the water and the elements. A hot generator can scald. |
| Clean the water-level sensor | MANUFACTURER (Harvia HGX, HGD and HGP XW: a user task described in the manual) | A fouled level sensor causes water-level faults and stops the steam. |
| Replace sauna stones | MANUFACTURER (Harvia Spirit SP60FC/SP90FC: at least once a year); other models as your manual specifies | Stones that keep breaking down cannot be fixed by re-stacking. |
| Sand marked bench timber and replace worn slats | GENERAL GOOD PRACTICE; finishes and products as approved by the timber supplier | Smooth, sound timber is easier to clean and safer to sit on. |
| Clean glazing, tiles, grout and stone surfaces with products suited to the actual material, grout and sealer | As the installer’s and finish manufacturers’ instructions specify (see below) | The wrong chemical can etch stone, damage grout or sealer, or react with other products. |
| Review controller settings, cleaning products, the risk assessment and staff training | GENERAL GOOD PRACTICE | Settings drift and staff change. A periodic review keeps the room running as it was commissioned. |
Cleaning finishes: match the product to the material
There is no single cleaner for every surface in a sauna or steam room. Compatibility depends on the actual tile, stone, grout and sealer, so follow the installer’s and the finish manufacturers’ instructions. Some principles are well established:
- Terrazzo and calcareous stone (such as marble and limestone): use pH-neutral cleaners. The National Terrazzo & Mosaic Association advises neutral products and warns against harmful acids and alkalis, and the Natural Stone Institute warns that acids can dull or etch calcareous stone.
- Cement grout: one grout manufacturer recommends a pH-neutral cleaner for routine cleaning.
- Acid-resistant surfaces only: Harvia’s sauna heater cleanser is acidic (about pH 3), is for acid-resistant surfaces such as glazed tile, glass, porcelain and stainless steel, and must not be combined with chlorinated products.
Never mix cleaning chemicals. Our steam water quality guide covers steam room surface care in more detail.
Professional service
| Task | Label | Who |
|---|---|---|
| Thorough steam generator service, including the reservoir, heating elements and water-level sensor | MANUFACTURER (Harvia HGX, HGD and HGP XW: at least twice a year for community and institutional use) | Professional service personnel |
| All generator maintenance beyond the user tasks above | MANUFACTURER (Harvia HGX, HGD and HGP XW) | Professional service personnel |
| Overheat protection trips: find the cause, then reset | MANUFACTURER (Harvia heater and steam generator manuals: cause first; reset only by an authorised or professional maintenance person) | Authorised service person |
| Heater element, contactor or control faults; error codes that recur | GENERAL GOOD PRACTICE | Licensed electrician or authorised service agent |
| Leaks, water-supply or drain faults at the generator | GENERAL GOOD PRACTICE | Licensed plumber or authorised service agent |
| Electrical inspection of heaters, controls and generators | As your risk assessment, insurer and local requirements specify | Licensed electrician |
| Controller settings: on-time limits, schedules, remote-start arrangements | As the control manual specifies; some settings are made only by a qualified electrician | Qualified installer or electrician |
Where staff stop
Staff never open electrical equipment, never bypass or disable safety devices such as overheat protection, door switches or heater cover sensors, and never dismantle a steam generator. Repeated tripping, leaks and recurring error codes need a licensed or authorised service person. Electrical work must be done by a licensed electrician and plumbing work by a licensed plumber, following the manufacturer’s instructions.
Operator checklist
Use this as the walk-round sheet for each room. Tick what is fine; anything that is not goes in the faults column of the log.
| Item | What to check | Label | If it is not right |
|---|---|---|---|
| Cleanliness | Benches, backrests, walls, handles and floors clean; cleaning recorded | GENERAL GOOD PRACTICE | Clean before opening; review the cleaning plan |
| Benches | Slats sound and smooth, fixings tight, no splinters, raised screws or cracked boards | GENERAL GOOD PRACTICE | Close the bench section; arrange repair |
| Floor | Slip-resistant surface intact, no standing water, duckboards secure | GENERAL GOOD PRACTICE | Dry, clean or remove the hazard; check the drain |
| Door and hardware | Closes and self-closes fully, handles inside and out, hinges and closer secure, no lock fitted | GENERAL GOOD PRACTICE | Close the room if the door will not close or open freely |
| Glazing | No cracks, chips or loose beads; clear view in for staff | GENERAL GOOD PRACTICE | Close the room if glass is damaged; call for service |
| Heater | Guard in place, nothing on or against it, no unusual discolouration of nearby timber | GENERAL GOOD PRACTICE; Harvia lists blackening panels as a sign to investigate | Switch off and call for service |
| Stones | No fragments underneath, no elements showing, no tall pile on top | MANUFACTURER (Harvia heater manuals) | Schedule a stone check; record it |
| Controls | Display normal, time and temperature settings as commissioned, no error code | As your control manual specifies | Record the code; do not change commissioned limits; call for service |
| Sensors | Temperature sensor in its position and undamaged; nothing hung over it | MANUFACTURER (Harvia lists a displaced or broken sensor as a cause of overheating) | Call for service; do not move the sensor |
| Ventilation | Vents open and unobstructed; mechanical exhaust running where fitted | MANUFACTURER (Harvia: mechanical ventilation for public steam rooms) and GENERAL GOOD PRACTICE | Clear the obstruction; report a fan fault |
| Lighting | All lights working; fittings and covers intact | GENERAL GOOD PRACTICE | Report; electrical repair by a licensed electrician |
| Smell | No burning, electrical, musty or drain smells | GENERAL GOOD PRACTICE | Burning or electrical smell: switch off and call for service |
| Noise | No new buzzing, clicking or banging (occasional cracks can be stones in the heat) | GENERAL GOOD PRACTICE | Record it; call for service if it persists |
| Damage | No damage to linings, tiles, grout, sealant, signage or the emergency call point | GENERAL GOOD PRACTICE | Record and arrange repair |
| Steam generator | No leaks at the unit, steam line or drain; no service light; automatic drain ran | MANUFACTURER (Harvia HGX, HGD and HGP XW) | Leak or error code: call for service. Service light: book the service |
| Filter and water treatment | Softener salt topped up, filter or treatment unit in its normal state | As the treatment and generator manuals specify | Top up or service as the manual allows; record it |
| Drain | Room and plant-room floor drains clear and draining freely | GENERAL GOOD PRACTICE; Harvia requires a plant-room floor drain | Clear grates; blockages beyond the grate need a plumber |
| Water quality | Supply unchanged; any test results within the generator manual’s table | MANUFACTURER (Harvia HGX, HGD and HGP XW water table) | Check treatment; ask your service technician |
| Service record | Log up to date; next service booked; hours since last service noted | GENERAL GOOD PRACTICE | Update the log; book the overdue service |
Why records matter
- Guarantees depend on them. Harvia’s guarantees for heaters, controls and steam generators depend on following the installation, use and maintenance instructions, and for steam generators on meeting the water-quality table. Commercial and institutional cover is short: three months for several heaters, controls and the HGX and HGD generators in institutional use, and one year for the HGP. A dated log is how you show the manual was followed. In Australia, a manufacturer’s guarantee sits alongside the consumer guarantees of the Australian Consumer Law.
- Downtime is mostly predictable. Crumbled stones, scale in steam generators, blocked drains and moisture trips after shutdowns are common causes of closures. A log that shows hours, findings and trends turns them into booked work instead of an emergency.
- Service is faster with history. A technician who can see the last descale, the error codes and the hours since service finds the cause sooner.
- Inspectors and insurers ask for it. Overseas licence conditions expect check, maintenance and electrical inspection records to be kept on site, and local councils, insurers and your own risk assessment may ask for the same.
Our troubleshooting guide explains what to record when something goes wrong.
BSC Commercial Sauna & Steam Maintenance Log
Print this log
Print this page from your browser (landscape works best for the wide tables), or copy the columns into your own log book or spreadsheet. Keep one log per room or per piece of equipment, store it with the manuals, and keep completed pages for the life of the equipment.
| Date | Equipment | Operating hours | Cleaning | Stone inspection | Generator flush / descale | Filter / water treatment | Faults | Service / technician | Next action |
|---|---|---|---|---|---|---|---|---|---|
How to fill it in:
- Equipment: the room and the model, for example “Steam room 1, generator” or “Sauna 2, heater”.
- Operating hours: the total from the control or generator display, where it shows one. This is the figure stone and descaling intervals depend on.
- Stone inspection and Generator flush / descale: what was done and what was found, not just a tick.
- Faults: the symptom, any error code, and whether the room was closed.
- Next action: what is due, by when, and who is responsible.
Getting service
How we approach it
BSC Wellness works with a dedicated electrical contractor, an independent business and a Harvia-authorised service agent, who carries out our electrical servicing. For a fault, a service light, an overheat trip or a leak, see our service page or request service with the equipment model, any error code and the relevant log entries.