The Harvia Pro 20 is a high-capacity 20kW electric sauna heater built specifically for large-scale commercial sauna installations. With its rugged stainless steel design and extended heating range, the Pro 20 is engineered for demanding environments such as hotels, health clubs, spas, and wellness facilities. Operating exclusively on 208V 3-phase power, it delivers exceptional thermal performance and reliability for saunas with continuous and high-volume usage. Designed to operate with the Harvia Xenio control system and LTY45 power unit, the Pro 20 ensures precision, safety, and robust heating for professional-grade applications.
Features
20kW commercial-grade output – supports sauna rooms from 706 to 1,141 cubic feet
Built for continuous use in professional wellness and public sauna environments
Rugged floor-standing design with a full stainless steel frame and components
Large 132 lb stone capacity delivers long-lasting, consistent heat (stones not included)
UL Listed for commercial-grade safety standards
Designed and manufactured in Finland for superior performance and longevity
Controls and Operation
The Harvia Pro 20 requires the use of a Harvia Xenio control system for managing temperature, timers, and session durations. For facilities requiring remote scheduling and monitoring, the Xenio WiFi option enables digital automation. Regardless of control type, an LTY45 power unit is required for operational integration and safety compliance with the 20kW capacity and 208V 3-phase power setup.
Commercial Application Focus
Tailored for intensive use, the Pro 20 is the preferred heater for high-traffic sauna environments that demand reliability, heat retention, and fast recovery between sessions. The high wattage ensures rapid heating and stable temperature control even in expansive spaces, while the steel housing ensures extended service life under constant thermal loads.
Technical Information
The Harvia Pro 20 operates on a 208V 3-phase electrical connection and must be installed with both the Xenio controller and LTY45 power unit (both sold separately). This system architecture enables full compatibility with commercial safety and control standards while supporting automation and programmable operation via WiFi if desired.
Specifications
Model
Harvia Pro 20
Kilowatt Rating
20.0 kW
Primary Fuel
Electric
Minimum Adjusted Cubic Feet
706
Maximum Adjusted Cubic Feet
1,141
Voltage
208V
Phase
3PH
Control Type
Requires CX45-U1-U3 Xenio Controller + LTY45 Power Unit (sold separately)
WiFi Control Option
Yes – Xenio WiFi supports remote scheduling and operation
Stone Capacity
132 lbs or 7 Boxes of AC3020 (stones not included)
