Projects · 12 persons

12-person commercial sauna for gyms, padel clubs & hotels in Surabaya

A 12-person commercial sauna for gyms, padel clubs, and hotels: 4 × 3 m thermowood, a Harvia 12 kW heater on 3-phase power — built for heavy daily use, not the occasional session.

12-person sauna — project interior by Kontraktor Sauna Surabaya

Project specifications

Project specifications

Footprint
4 × 3 m
Capacity
12 orang / persons
Heater
Harvia 12 kW
Power required
3 fase (dihitung per gedung) / 3-phase (sized to the building)
Materials
Thermowood + aspen, bangku dua tingkat
Build time
6–7 minggu / weeks
Prices
IDR 230–290 juta

Prices are indicative, based on real 2025–2026 projects, and depend on size, materials and site conditions. Final quote — free on WhatsApp after a site survey.

At this capacity a sauna stops being a nice-to-have amenity and starts being part of a recovery ecosystem that earns its own revenue. Thermowood holds up to intensive use without warping, two-tier aspen benches make room for a group straight off a padel court or a gym class, and the 12 kW heater with a large stone-loading volume keeps temperature stable even when the door opens and closes constantly at peak hours.

Gyms and padel clubs around Pakuwon, and staff facilities in the industrial estates of Rungkut and Gresik, are where we install this format most — usually paired with a cold plunge as a single contrast-therapy package. LED lighting under the bench steps keeps guests safe when the cabin is dim, and the control panel can be monitored from the reception desk. We start every project with an audit of the building’s electrical load before the quote is drawn up.

Gallery

The details that make the difference

FAQ

Frequently asked questions

How many hours a day can a 12-person sauna run?

We design this format for long daily operation, not just a few hours. The keys are commercial-grade thermowood, a heater with a large stone-loading volume, and a scheduled maintenance programme from our team after handover — including routine heater checks and bench re-tightening.

Can this be paired with a cold plunge for a gym or padel club?

Yes, and it is the combination our commercial clients ask for most: a hot sauna for muscle relaxation after a match, a cold plunge to bring inflammation down. Details on the recovery-zone package are on the wellness zone page.

What is the investment for a 12-person commercial sauna?

Indicatively IDR 230–290 million, depending on the room condition and chosen finishing. A detailed quote follows the site survey and an audit of the building’s electrical panel. Compare this against other formats on the pricing page.

WhatsApp

Tell us about your sauna project

Share your room size, location and the type of sauna you want — we reply on WhatsApp with technical recommendations, a realistic cost estimate and a free site-survey slot. No pushy sales, ever.

We usually reply within 1–2 hours (08:00–20:00 WIB)