KOVE x Harvia The Wall SW45 4.5kW Sauna Heater – Stainless Steel Electric Heater with Built-In Controls

Harvia The Wall SW45 4.5kW Sauna Heater

The Harvia The Wall SW45 4.5kW is a compact, wall-mounted electric sauna heater combining traditional sauna performance with a slim, contemporary design.

Designed for sauna rooms of 3–6 m³, The Wall SW45 features convenient built-in manual controls, a generous sauna stone capacity and a space-efficient profile that makes it particularly well suited to smaller home and garden saunas.

Compact Scandinavian Design

At just 260mm deep, The Wall has been designed to minimise the amount of space occupied inside the sauna while retaining the stone capacity needed to create a traditional sauna experience.

• Slim wall-mounted profile
• Contemporary Scandinavian design
• Stainless steel finish
• Ideal for compact sauna cabins

Built-In Manual Controls

The SW45 features integrated manual controls, so there is no need for a separate external control panel.

• Built-in temperature control
• Integrated timer
• Illuminated operating switches
• Simple, straightforward operation

For customers who want a traditional sauna heater that can be controlled directly from the unit, The Wall SW45 provides an exceptionally simple setup.

Designed for 3–6 m³ Sauna Rooms

With a 4.5kW heating output, the SW45 is designed for properly constructed sauna rooms with a volume of approximately 3–6 m³.

Correct heater sizing depends on the construction, insulation and amount of glass or other uninsulated surfaces within the sauna. If you're unsure which heater is suitable for your sauna, contact KOVE and we'll be happy to help.

Traditional Sauna Stones & Steam

The Harvia The Wall SW45 holds approximately 20kg of sauna stones, providing the thermal mass required for consistent sauna heat and traditional steam when water is added to the hot stones.

• Stone capacity: Approx. 20kg
• Recommended stone size: 5–10cm
• Sauna stones: Sold separately

Sauna stones should always be loaded in accordance with Harvia's instructions to maintain suitable airflow around the heating elements.

Flexible Installation

The Wall has been designed to make installation straightforward, with a mounting system that allows the heater to be installed neatly against the sauna wall.

The controls can also be configured for convenient operation depending on the installation layout.

Electrical requirements: The SW45 requires a fixed electrical connection and must be installed by a qualified electrician in accordance with UK electrical regulations and Harvia's installation instructions.

Harvia The Wall or Harvia Vega?

Both are proven Harvia electric sauna heaters designed for smaller sauna cabins. The choice primarily comes down to design and installation preference.

• Choose The Wall SW45 for its slimmer 260mm profile and more contemporary wall-mounted design
• Choose the Harvia Vega 4.5kW if you prefer the distinctive curved design of the established Vega range

Both models feature built-in manual controls and are designed for sauna rooms of approximately 3–6 m³.

Ideal For

• Small home sauna cabins
• Garden and outdoor saunas
• 1–2 person traditional saunas
• Space-conscious sauna installations
• Customers wanting simple built-in controls

Technical Specifications

• Brand: Harvia
• Range: The Wall
• Model: KOVE-SW45
• Power Output: 4.5kW
• Recommended Sauna Size: 3–6 m³
• Stone Capacity: Approx. 20kg
• Recommended Stone Size: 5–10cm
• Controls: Built-in manual controls
• Installation: Wall-mounted
• Finish: Stainless steel
• Dimensions: 610 × 430 × 260mm (H × W × D)
• Weight: Approx. 11.7kg
• IP Rating: IPX4
• Electrical Connection: Fixed-wired installation by a qualified electrician
• Warranty: 1 Year Excluding Elements

Why Choose Harvia?

Harvia is one of the world's most established sauna specialists, with decades of experience designing heaters specifically for the demanding heat and humidity of the sauna environment.

The Wall SW45 combines traditional electric sauna heating with a particularly compact, contemporary design, making it an excellent choice for modern home and garden sauna installations.

Balance by Design.