Electric Sauna Heater Mondex Hiisi

Rough Finnish soapstone, elegant black granite, and advanced technology come together in this renowned sauna heater. Mondex Hiisi heats evenly throughout its entire length, delivering moist, oxygen-rich steam every time. Hiisi is a wall-mounted floor heater — its legs bear the full weight of the stove, so there is no load on the wall itself. It can also be embedded within the sauna bench structure using an embedding flange (sold separately), leaving more space for additional sauna benches.

Key features:

• Space-saving installation — Installed directly against the wall, with no clearance needed behind it.
• WiFi & remote control — External control unit, available with or without WiFi.
• Embeddable — Can be built into the bench structure with an embedding flange.
• Soft, moist strokes — Even during long heating sessions, the steam stays moist and soft.
• LED light kit (optional) — Illuminates the wall with a fan-shaped light effect for added atmosphere.
• Long cables — 10 m controller cable and 4 m temperature sensor cable included as standard.

Available in 6.6 kW (5–9 m³) and 9.0 kW (7–13 m³), Hiisi's striking combination of natural soapstone and black granite makes it a refined centrepiece for luxury villas, spa rooms, and high-end wellness installations across Marbella and the Costa del Sol.

Control options:

Hiisi is available exclusively with electronic control — there is no mechanical (M) version:

• E2 Smart Control — A separate, easy-to-use controller that learns your sauna's heating pattern over the first few uses to maintain the optimal temperature energy-efficiently. The controller can be placed in the sauna room, the changing room, or wherever is most convenient.
• E2W WiFi Control — All the benefits of E2, plus intelligent remote control:
  • Remote on/off, timer, and temperature control from your mobile device
  • Door sensor for safety — heating is interrupted if the sauna door is opened during a session
  • Web app session tracking — monitors total heating time, reminds you when sauna stones need replacing, tracks energy consumption and electricity costs
  • Health and wellness logging — record sauna sessions and compare with your own history
  • Multi-user access — add or remove users, including temporary guests, with adjustable data visibility

The E2 and E2W control packages include the controller panel, temperature sensor, a 10 m control cable, and a 4 m temperature sensor cable. WiFi (E2W) models also include a door sensor and cable. The control unit comes in black as standard, with a white control unit available on request.