30kW+

Heaters and heating arrays in the 30kW and above category are engineered for massive commercial spaces, public leisure centres, and large-scale bespoke wellness facilities.

• Volume Capacity: A 30kW system is typically required for rooms ranging from 40 to 65+ cubic metres.
• The Calculator: In spaces this large, the surface area of glass fronts, tiered seating, and uninsulated walls drastically alters the heat requirement. We strongly advise using our Sauna Heater Calculator alongside a consultation with our commercial team to ensure precise specification.

While exceptionally large single heaters do exist, it is highly common in the 30kW+ category to use a tandem heating system (e.g., two 15kW heaters or two 18kW heaters) synced together.

• Redundancy: If one heater requires maintenance, the second unit can keep the room operational at a reduced capacity, preventing total facility downtime.
• Even Heat Distribution: Placing two heaters at opposite ends of a massive room ensures a much more consistent temperature for all guests, eliminating cold spots.

Please Note: It is the customer's responsibility to consult a qualified electrician to assess and install the suitable electrical requirements to the heater's specification.

The power draw at this level is strictly industrial.

• Supply: You absolutely require a robust 400V Three-Phase electrical supply.
• Amperage: A single 30kW load draws well over 40 Amps per phase.
• Contactor Panels: The power cannot be routed through a standard control pad. You will require heavy-duty commercial Contactor Boxes (Relay Panels) installed in a dedicated plant room to handle the switching of the electrical load safely.

Yes. For large leisure centres and hotels, efficiency and control are paramount. Many of the advanced commercial control panels compatible with our 30kW+ range offer BMS integration. This allows facility managers to monitor temperatures, schedule automated on/off cycles, and track energy usage remotely from a central computer.

 Ultra-large heaters require a massive thermal mass to cope with a "high bather load" (dozens of people entering and exiting the room frequently).

• Capacity: Expect to require anywhere from 100kg to 250kg+ of sauna stones, depending on whether you use a single mega-heater or a tandem setup.
• The Benefit: This vast quantity of stone stores an immense amount of heat, ensuring the room recovers its temperature rapidly when the doors open, and provides thick, consistent steam (löyly) when water is applied.
  
  

Absolutely. Passive ventilation is entirely insufficient for a room of this magnitude.

• Hygiene and Safety: To process the sweat and CO2 generated by 15 to 30+ bathers, commercial regulations typically require mechanical extraction to provide 6 to 8 complete air changes per hour.
• Heater Function: Without forced airflow, the immense heat generated by a 30kW system will stratify at the ceiling, causing the high-limit safety sensors to trip and prematurely shut the system down while the lower benches remain cold.

Yes, and it is highly recommended. In public saunas, guests often pour excessive amounts of water onto the stones, which can shock the heavy-duty heating elements and lead to premature failure. An automated dosing system safely delivers a metered amount of water at set intervals, maintaining perfect humidity levels while protecting your investment.