Holls

Holl's heaters are selected to perfectly complement their range of premium French-designed cabins. Unlike generic heaters, the units supplied with collections like the Utopia or Venetian are calibrated to the specific volume and insulation properties of Holl's wood, ensuring rapid heat-up times and energy efficiency. They typically feature a sleek, modern aesthetic—often in stainless steel or "Black Steel"—to match the contemporary interior of a Holl's cabin.

Yes, this is the defining feature of the Holl's "Hybrid Combi" range. These cabins allow you to choose between two distinct heating modes:

• Steam Mode: Use the electric stove to generate intense heat (up to 80–90°C) and traditional steam (löyly) by pouring water onto the lava stones.
• Infrared Mode: Switch to the Quartz or Magnesium emitters for a gentler, dry heat that penetrates deep into muscle tissue.

Note: You generally do not run both systems simultaneously; you select the mode that suits your recovery needs for that specific session.

Most heaters supplied for Holl's domestic cabins (typically ranging from 3.5kW to 6kW) are designed for versatility.

• Standard Homes: They can usually be installed on a Single Phase 230V supply, which is standard in UK homes. However, because they draw significant power (often 16 Amps to 32 Amps), they must be hardwired into a dedicated circuit by a qualified electrician. They cannot be plugged into a standard wall socket.
• Larger Units: For larger Holl's commercial cabins (8kW+), a three-phase connection may be required.

Please Note: It is the customer's responsibility to consult a qualified electrician to assess and install the suitable electrical requirements to the heater's specification.

To maintain the warranty and performance of your heater, you must use high-grade volcanic lava stones (specifically split-face Olivine Diabase).

• Why? These stones are porous and withstand extreme thermal shock. Smooth river rocks or ceramic stones can crack or pack too tightly, blocking the airflow and causing the heater's overheat protection to trip.
• Maintenance: Holl's recommends washing the stones before first use and rearranging them once a year to ensure air can flow freely between them.
  
  

This depends on the specific collection:

• Integrated Controls: Many standard models feature simple, robust mechanical dials located directly on the heater unit (for timer and thermostat). This "all-in-one" design is reliable and easy to use.
• Remote Digital Panels: Premium ranges often separate the controls, using a digital wall panel or a smartphone app. This allows you to set the temperature and lighting without reaching down to the heater, offering a safer and more relaxing user experience.

In the UK, Holl's offers a 2-year warranty on the electrical components (including the heater and control panel) and a 10-year warranty on the sauna cabin wood. This warranty protects against manufacturing defects but requires that the heater has been installed by a qualified professional in accordance with UK electrical safety standards.

If your heater cuts out while the room is still warm, it is likely the Overheat Protection Device has tripped. This is a mandatory safety feature.

• Common Causes: It is usually caused by stones being packed too tightly (blocking airflow) or poor ventilation in the room.
• The Fix: Once the heater has completely cooled, there is usually a reset button (often located at the base of the unit) that can be pressed to restore function. If it persists, check your stone arrangement.