9kW Sauna Heaters

What is the recommended sauna size for a 9kW heater?

A 9kW electric sauna heater is a robust unit designed for large saunas, typically ranging from 390 to 530 cubic feet. To get a precise recommendation for your specific room, we strongly recommend using our official sauna heater size calculator to confirm the perfect fit.

What are the electrical requirements for a 9kW heater?

A 9kW heater is a high-power appliance that requires a dedicated 240-volt circuit and must be connected to a 50-amp breaker. This installation is not a DIY project and requires a licensed electrician to ensure everything is hardwired safely and according to local codes for proper and safe operation.

Is a 9kW heater suitable for commercial use?

Yes, many 9kW heaters are built to withstand the demands of commercial environments like gyms, spas, and hotels. They are constructed with heavy-duty components for durability and continuous use. If you are setting up a commercial facility, it's often best to look at dedicated large sauna heaters, as they may have specific certifications or warranty requirements for public use.

How much stone capacity should I look for in a 9kW heater?

Stone capacity at this power level is a key feature that defines the sauna experience. A traditional heater may hold 50-60 lbs for a quick, intense heat. However, premium models from brands like HUUM can hold over 550 lbs of stones. This massive stone mass creates an incredibly soft, radiant, and long-lasting steam that is perfect for larger groups.

For an even deeper dive, check out our complete guide to choosing the perfect sauna heater.