K12.5G Club Series 12.5kW Stainless Steel Sauna Heater at 240V 1PH

The Harvia Club K12.5G is a premium 12.5 kW electric sauna heater engineered for continuous daily use – an ideal choice for health clubs, day spas, hotels, and large luxury home saunas that demand top-tier performance. This heavy-duty commercial electric sauna heater effortlessly bathes rooms up to 742 cu. ft. in intense, pleasant heat from morning till night, providing an authentic Finnish sauna experience with soothing steam. Built with a robust stainless-steel exterior and dual-wall construction, the K12.5G delivers both power and reliability. Dual voltage flexibility (240 V single-phase or 208 V 3‑phase) gives you installation options, making this unit as suitable for a home spa retreat as it is for a busy gym – truly the ultimate upgrade for your traditional sauna.

Key Features

• Powerful 12.5 kW Output: High-performance heating capacity quickly raises temperatures in sauna rooms from 494 to 742 cu. ft., making it perfect for large residential suites and commercial facilities alike (spa, hotel, or club sauna).

 

• Heavy-Duty Continuous Use: Industrial-grade components allow round-the-clock operation – this floor-standing unit is built to run from morning till night without skipping a beat, ideal for high-traffic home or commercial sauna environments.

 

• Premium Stainless Steel Build: Deluxe stainless steel interior and exterior resist corrosion and wear. The multi-layer construction keeps the outer surface cooler to the touch for added safety and comfort.

 

• Large 132 lb Rock Capacity: Accommodates about 3 boxes of sauna stones, which sit in direct contact with the heating elements. This design “softens” the heat by filtering it through the rocks – ensuring a consistent, gentle steam löyly and even heat distribution for bathers.

 

• Dual Voltage Flexibility: Supports both 240 V/1‑phase (home use) and 208 V/3‑phase (commercial 3‑phase sauna unit) configurations. This versatility means the K12.5G can be installed in a traditional home sauna on a single-phase 240 V circuit or in a large commercial sauna with a 208 V 3‑phase supply.

 

• Optional Digital Control: Pairs with an external Harvia Xenio control (sold separately) for convenient operation. Enjoy easy adjustments of temperature and session time with a modern digital controller mounted outside the sauna – allowing you to customize your sauna experience effortlessly.

 

• Safety & Certifications: Designed with an integrated overheat protector and cooler outer shell for safe use in public settings. The Harvia K12.5G is **UL listed** and **ETL certified**, meeting strict electrical safety standards for indoor sauna heaters in the US and Canada.

 

• Authentic Finnish Craftsmanship: Part of Harvia’s renowned Club Series, the K12.5G is designed and manufactured in Finland, reflecting over 60 years of sauna expertise. Its exceptional build quality and reliability ensure years of luxurious sauna enjoyment.

Specifications

• Model: Harvia Club K12.5G (Club Series)

 

• Power Rating: 12.5 kilowatts (electric)

 

• Sauna Room Size: 494 to 742 cubic feet (14 m³ – 21 m³)

 

• Electrical Requirements: 240 V AC, 1‑phase (52.7 A draw – requires two dedicated circuits); or 208 V AC, 3‑phase (34.1 A)

 

• Installation Type: Floor-mounted unit (hard-wired connection)

 

• Dimensions: 19.9″ W × 16.9″ D × 27.6″ H (505 × 429 × 701 mm)

 

• Heater Weight: 60 lbs (27 kg) empty

 

• Stone Capacity: 132 lbs of sauna stones (stones sold separately)

 

• Construction Materials: Stainless steel inner tank and outer shell, industrial-grade heating elements

 

• Safety Features: Overheat shutoff sensor, dual-wall insulation for cooler surface temperature

 

• Certifications: UL listed & ETL certified (CSA standard compliant)

 

• Warranty: 2-year limited (consumer use) / 1-year (commercial use)

What’s Included

• Harvia K12.5G Heater Unit: 12.5 kW Club Series electric sauna heater (floor-standing model), finished in stainless steel

 

• Installation & Operation Manual: Detailed owner’s manual with sauna heater installation instructions, wiring requirements, and safety guidelines

 

• Warranty Documents: Official Harvia limited warranty certificate (2 years residential coverage)

Required Accessories

• Control Unit (Sold Separately): An external digital control is required for operation. The Harvia Xenio CX170 control panel (with timer/thermostat) is recommended to turn the heater on/off, set temperature, and manage heating cycles. (Note: Control unit and any necessary relay box are purchased separately.)

 

• Sauna Stones: Approximately 132 lbs of **high-quality sauna stones** (3 boxes of Harvia stones, 5–10 cm size) are needed to fill the heater. Stones ensure proper heat distribution and steam – never operate the K12.5G without fully loading the heater with stones. *(Stones sold separately.)*

Installation & Safety

• Professional Installation: The K12.5G must be hard-wired to a dedicated circuit by a licensed electrician. For 240 V setups, two separate feed circuits are required due to the high amperage. Always follow local electrical codes and the included manual when installing this unit.

 

• Mounting Requirements: This is a free-standing floor model sauna heater. Install on a level surface capable of supporting the heater and stones (total ~192 lbs when filled). Maintain proper clearances from walls and benches as specified in the manual to allow safe airflow and prevent heat damage to surrounding materials.

 

• Heater Guard: For safety, a wooden heater guard rail (fence) around the unit is highly recommended, especially in commercial settings or family saunas. The guard prevents accidental contact with the hot heater surface while still allowing sufficient air circulation.

 

• Operation Safety: Always fill with the required stones before use and keep them stacked per the instructions (do not cover the heating elements completely – leave gaps for airflow). The heater features an internal high-temperature cutoff to prevent overheating. Users should never pour water directly on the heating elements (only on the stones) and should adhere to recommended session durations. Ensure proper ventilation in the sauna room for safe oxygen levels.

 

• Usage Guidelines: Maximum operating temperature is typically 180–195 °F. Always supervise children or inexperienced users in the sauna. After each use, allow the heater to cool down and inspect stones periodically (replace any that are crumbling to maintain heater performance and safety).