The Sauna Company designs, builds and refurbishes commercial saunas and steam rooms for gyms, spas, hotels, apartment buildings, salons and workplaces across London and the UK. Every commercial sauna is built on site to suit the space, the number of users and how many hours a day it will run.
Who we build commercial saunas for
- Gyms and health clubs
- Hotels and spas
- Residential apartment buildings and private members' clubs
- Massage, beauty and treatment studios
- Offices and staff wellness areas
- Military and public-sector facilities
What a commercial sauna needs that a home sauna doesn't
A gym or hotel sauna can run for ten hours or more a day, seven days a week, with the door opening constantly. Everything has to be specified for that kind of use:
- Commercial-rated heaters sized for continuous running, with three-phase power where the load needs it
- Hard-wearing timbers and benches that cope with heavy use and daily cleaning
- Proper ventilation, with fresh air in low near the heater and extract high on the opposite side, so the air stays fresh for every user
- Safety-glass doors and controls that staff can lock and manage
- Floors, drainage and waterproofing suited to wet areas and daily cleaning
Commercial sauna refurbishment
Many commercial saunas don't need replacing. We can strip back to the frame, upgrade the insulation, re-clad the interior, fit new floating benches and install a new heater and controls, usually for far less than a full rebuild. For the Royal Air Force at Lakenheath we stripped and rebuilt the sauna and fitted a 15kW three-phase heater, with the work completed within three weeks. Read the RAF Lakenheath case study.
Recent commercial projects
- Royal Air Force Lakenheath, Norfolk: commercial sauna refurbishment
- Luxury apartment complex sauna, Southbank, London
- Massage parlour sauna and steam room
We also design and build commercial steam rooms alongside saunas.
Commercial saunas for hotels and spas
In a hotel or day spa the sauna is part of the guest experience, so it has to look as good as it performs. We design saunas, steam rooms and cold plunges as a single thermal suite, with the circulation, lighting and finishes planned around how guests move through it. Traditional Finnish saunas give the deepest heat and real löyly; hybrid and bio combi saunas offer gentler, more humid sessions for guests who find a classic sauna too intense. Heaters, controls and ventilation are specified for long opening hours and quiet running.
Commercial saunas for gyms and health clubs
Gym saunas take the hardest use of all: high occupancy, sweaty kit, constant door openings and cleaning every day. We size the cabin to your peak numbers, allowing roughly 600mm of bench per seated user, and match the heater output to the volume and the heat loss from the door. Benches are built from hard-wearing, low-resin timber with removable sections for cleaning, and controls can be locked or time-limited so staff stay in charge of temperature and opening hours.
Apartment buildings and members’ clubs
Residents’ wellness suites need saunas that look after themselves between visits from the managing agent. We specify durable finishes, clear user signage, controls that can be scheduled or linked to a booking system, and ventilation that keeps the room fresh whether one person or eight are using it. Maintenance access is designed in from the start, so servicing does not mean taking the sauna apart.
Safety, compliance and maintenance
Commercial saunas must be safe for unsupervised public use. We use heaters built to the relevant safety standard with over-temperature protection, guard rails around the heater, outward-opening doors without locks, and electrical installations certified to BS 7671. We help operators put the right signage, cleaning routines and inspection schedules in place, and we offer servicing and repairs for saunas we have built and for existing installations.
How a commercial project works
- Free design consultation and site survey
- Design and quotation based on your space, user numbers and opening hours
- Build and installation on site
- Handover and advice on daily running and maintenance
Every commercial project is quoted individually. For typical starting points, see our sauna prices and how our sauna installation process works. To discuss your project, book a free design consultation using the form below or call 020 8058 0871.
Commercial Sauna FAQ's
How much does a commercial sauna cost?
Every commercial sauna is quoted individually, because user numbers, opening hours, heater size, power supply and finishes vary widely. Refurbishing an existing commercial sauna usually costs far less than a full rebuild. Book a free consultation and we will give you a fixed quote.
What size heater does a commercial sauna need?
Heater output is matched to the cabin volume, the amount of glass and how often the door opens. Commercial cabins commonly use larger heaters on a three-phase supply; the RAF Lakenheath sauna, for example, runs a 15kW three-phase heater.
Can you refurbish our existing commercial sauna?
Yes. We can strip back to the frame, upgrade insulation and vapour control, re-clad the interior, fit new benches and install a new heater and controls, often within a few weeks and with minimal downtime.
Do you build commercial steam rooms and cold plunges too?
Yes. We design and build commercial steam rooms, and we can plan the sauna, steam room, showers and cold plunge together as one thermal suite.