Finnleo Laava 12.0 kW (208V 3PH) Sauna Heater

Finnleo Laava 12.0 kW (208V, 3PH) Sauna Heater

The Finnleo Laava 12.0 kW (208V, 3PH) is a high-output, floor-standing sauna heater engineered for extra-large residential saunas and standard commercial installations. Built by Sauna360 in Cokato, Minnesota, the Laava concentrates powerful, even heat into a compact footprint, making it an ideal choice for larger sauna rooms that demand fast heat-up times and consistent, authentic Finnish sauna heat without sacrificing valuable floor space.

This 208V, three-phase configuration is designed for commercial and light-commercial electrical infrastructure, delivering the same reliable 12.0 kW output in a wiring configuration suited to facilities already running 208V three-phase power, such as fitness centers, spas, and multi-unit residential properties.

Key Features

• Floor-standing heater with a rock capacity of approximately 132 lb (60 kg)
• Sized for saunas ranging from roughly 390 to 950 cubic feet, depending on room construction and insulation
• 12.0 kW output available in 208V, 3-phase wiring configuration
• Compact footprint that maximizes usable sauna floor space
• Durable stainless-steel and heavy-gauge steel construction built to withstand continuous commercial use
• Sauna rocks included with every unit
• Compatible exclusively with the SaunaLogic2 (SL2-C) control system
• Available as Heater Only or as a complete package bundled with SL2-C control and contactor box
• Safety-tested and listed for use in North America

Construction & Design

The Laava features a rugged, floor-standing construction using high-grade stainless steel components designed to endure the demanding thermal cycling of frequent commercial sauna use. Its vertical rock column design promotes efficient convective heat distribution throughout the sauna room, while its narrow footprint preserves bench and floor space, an important consideration in larger sauna installations where every square foot matters. The heater guard is designed to meet North American safety clearance standards while still allowing rocks to generate the soft, radiant heat and authentic aroma associated with genuine Finnish sauna bathing.

Heating Performance

At 12.0 kW, this heater is built to heat larger sauna volumes efficiently, making it well suited to sauna rooms in the 390 to 950 cubic foot range. The increased output over the 10.5 kW Laava model allows for quicker heat-up in larger rooms or spaces with higher ceilings, heavier wood mass, or frequent door openings common in commercial and shared-use settings, without requiring a jump to multi-unit configurations.

Controls & Compatibility

The Laava requires the SaunaLogic2 (SL2-C) control system paired with a matching contactor box rated for 12.0 kW, 208V, 3-phase operation. The SL2-C control is available with either a 60-minute timer or a 24-hour Wi-Fi-enabled option, allowing app-based control of heater start time, session length, and monitoring from a smartphone. The SaunaLogic2 ecosystem can also integrate compatible sauna lighting and audio components into a single, app-controlled experience.

What's Included

• Finnleo Laava 12.0 kW (208V, 3PH) heater unit
• Sauna rocks (approximately 132 lb capacity, included with every configuration)
• Heater guard/enclosure
• Installation and owner's manual
• Manufacturer's factory warranty
• Note: The SL2-C control and matching 208V/3-phase contactor box are required for operation and are available bundled with the heater or purchased separately as Heater Only.

Technical Specifications

• Model: Finnleo Laava
• Output: 12.0 kW
• Voltage: 208V
• Phase: 3-Phase
• Installation Type: Floor-standing
• Rock Capacity: Approximately 132 lb (60 kg)
• Recommended Room Size: Approximately 390–950 cubic feet
• Control Compatibility: SaunaLogic2 (SL2-C) required
• Listing: Safety-tested and listed for North America

Why Buy Finnleo From Us

Finnleo, built by Sauna360 in Cokato, Minnesota, is one of the most trusted names in authentic Finnish sauna. Every heater is safety-tested and listed for North America, and the SaunaLogic2 ecosystem ties your heater, lighting, and audio into one app-controlled experience. As an authorized Finnleo dealer, we offer full factory warranty coverage, expert sizing assistance, and support before and after your purchase. Have a question about fit, voltage, or lead time? Reach out and a sauna specialist will help you spec it correctly the first time.