Commercial Sauna

A: Size depends on peak user flow, not total visitors. A common rule is 1.2–1.5 m² per person. For example, a gym expecting 10 users per cycle should plan at least 12–15 m² internal space. Undersized saunas lead to crowding and reduced user satisfaction, while oversized units increase energy cost without return.

A: Heater power must match room volume and insulation. Standard calculation: 1 kW per 1–1.2 m³ of space.
For commercial use, add 10–15% extra capacity to handle frequent door opening and continuous operation. For example, a 15 m³ sauna should use a 15–18 kW heater, not a residential-grade unit.

A: Commercial heaters are built for 8–12 hours continuous operation, with thicker heating elements and larger stone capacity (typically 20–40 kg stones). Residential heaters are designed for intermittent use and will fail faster under heavy traffic.

A: For commercial projects, thermo-treated wood or Canadian hemlock offers better dimensional stability. Cedar provides better aroma and anti-bacterial properties but comes at a higher cost. For humid environments like spas, wood moisture content should be controlled at 8–12% to prevent cracking.

A: Standard modular commercial saunas can be installed within 3–7 days after site preparation. Custom-built projects may require 2–4 weeks, depending on complexity. Delays usually come from electrical and ventilation setup, not the sauna structure itself.