The Harvia K125G-U3-NC Club Series 12.5kW Electric Sauna Heater is a high-performance commercial sauna heater engineered for reliability, efficiency, and longevity. Designed for both large home saunas and high-traffic commercial environments like gyms, wellness centers, and spas, this floor-standing unit delivers even, consistent heat across spaces ranging from 494 to 742 cubic feet. Constructed entirely from stainless steel and built in Finland, this heater represents the pinnacle of authentic Finnish sauna engineering. It operates on 208V 3-phase power and requires a compatible control system and contactor/power unit (sold separately).
Features
Model: K125G-U3-NC (208V / 3-Phase)
Power Output: 12.5 kW (12,300 watts)
Sauna Room Size: Ideal for 494 – 742 cubic feet
Design: Floor-standing stainless steel body
Heating Elements: Industrial-grade stainless steel for long life
Stone Capacity: 135 lbs (4 boxes, sold separately)
Control Options: Compatible with Xenio CX45 (Digital) or F-2T & FX503 (Mechanical)
UL Listed: Certified for commercial safety and reliability
Country of Origin: Made in Finland
Technical
The Harvia K125G-U3-NC is engineered for demanding commercial applications where durability and performance are critical. This heater features a full stainless steel construction, ensuring resistance to corrosion and heat-related wear. It has a power output of 12.5 kW and is designed for 208V 3-phase electrical systems. The large 135 lb stone capacity provides exceptional heat retention and even distribution, enhancing the overall sauna experience. Required control systems are sold separately, allowing you to tailor the configuration with either digital or mechanical operation. As a UL-listed heater manufactured in Finland, it meets stringent international safety and quality standards.
Specifications
Model
Harvia Club K125G-U3-NC
Power Output
12.5 kW (12,300 watts)
Sauna Room Size
494 – 742 cu. ft.
Voltage / Phase
208V / 3-Phase
Amperage
34.1 Amps
Main Breaker
40 Amps
Wiring (Heater to Power Unit)
(3) #8 + Neutral + Ground
Control Wiring
(2) #14 + Ground
Heater Dimensions (W x D x H)
19 7/8″ x 17″ x 27 1/2″
Stone Capacity
135 lbs (Stones sold separately)
Construction
All Stainless Steel Housing & Heating Elements
Certifications
UL Listed
Country of Origin
Made in Finland
Heater Weight
60 lbs
Shipping Weight with Stones
192 lbs
In the Box
Harvia K125G-U3-NC Electric Sauna Heater (12.5kW)
Mounting Hardware
Installation & User Manual
UL Certification Label
Note: Controls and sauna stones are sold separately
