Electric sauna heater EOS HERKULES XL S120 HD

10 kW...20 kW20 kW...50 kWfree-standing

Overview
The flagship of the EOS Herkules range for large commercial saunas. The EOS Herkules XL S120 HD provides stable temperature control and high heat storage via two separate rock stores accommodating up to 120 kg of stones. The rock stores are positioned above the heating elements to ensure consistent performance and easy service access. Internal wiring is upgraded with solid copper busbars to withstand heavy-duty commercial operation.

Combi variant
The Combi variant includes an integrated 3–4 kW vaporizer located between the two rock stores. Features: automatic refilling (integrated top-up device), manual filling capacity (~5 L), holder for essences and herbs, and dry-run protection with acoustic alarm.

Optional accessories
Available accessories: heater guard rail with mounting brackets, rear cover panel, and a fragrance retrofit for integration with the vaporizer dish and water supply. Fragrance retrofit is designed for controlled aroma dosing and requires an upstream automatic dosing unit. Do not place flammable substances in the aroma dishes.

Model variants

• EOS Herkules XL S120 HD — Floor-standing model for dry (Finnish) sauna. Rock store capacity: 120 kg.
• EOS Herkules XL S120 Combi HD — Floor-standing model with integrated vaporizer for flexible sauna climates. Rock store capacity: 120 kg.

Your advantages

• Two separate rock stores (60 kg each) with essence & herbs holder for versatile infusions.
• Durable stainless steel construction and heavy-duty internal copper busbars.
• Choice of finishes: high-contrast anthracite with brushed steel or full matt black.
• High heat storage and powerful infusion capability thanks to double rock store.
• Slim footprint with 53 cm depth.
• Service-friendly design: rock stores positioned above heating elements.
• Optional rear cover panel and safety guard rail.
• EOS Herkules XL S120 Combi HD:
  • Flexible sauna climate control.
  • Built-in 3 kW / 4 kW vaporizer with level indication and automatic refilling.
  • Dry-run protection with acoustic alarm.

Technical specifications

• Electrical connection: 400 V 3N ~ 50/60 Hz
• Fuse protection control unit (18 / 24 / 30 kW): 3 x 16 A / 3 x 16 A / 1 x 16 A
• Fuse protection PEB unit (18 / 24 / 30 kW): 3 x 16 A / 3 x 35 A / 3 x 63 A
• Dimensions H / W / D (cm): 85 / 96 / 53
• Recommended sauna cabin volume (18 / 24 / 30 kW): 24–35 m³ / 35–45 m³ / 45–65 m³
• Minimum air inlet/outlet size (18 / 24 / 30 kW): 50 x 6 cm / 50 x 8 cm / 50 x 10 cm
• Weight without rocks: 85 kg
• Stone filling capacity: 120 kg
• Power extension required: PEB 10 / PEB 18 (H) / PEB 36 (H)
• Combi vaporizer (if equipped): 3–4 kW, automatic refilling, manual top-up approx. 5 L, level indication, dry-run protection with acoustic alarm