KOVE x Harvia The Wall SW45 4.5kW Sauna Heater – Stainless Steel Electric Heater with Built-In Controls
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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.
Delivery
Delivery & Shipping
Free UK Mainland Delivery
Delivery is included on KOVE orders to UK mainland postcodes.
Depending on the product, your order will be delivered using one of the following services:
- Next Working Day – Kerbside Delivery for most products
- Selected Day – Unpack & Position (No Assembly) for Outdoor Saunas & Ice Baths
- Selected Day – Room of Choice for Infrared Saunas & Hyperbaric Chambers
Next Working Day Delivery
Most products are delivered on the next working day when ordered and paid for before 3:00pm Monday–Friday.
Standard deliveries take place Monday–Friday, 08:30–18:00 and are kerbside / threshold only. Drivers do not unpack, position or install products.
Saturday kerbside delivery may be available for an additional charge.
Selected Day Delivery
For selected larger products, our specialist delivery partner will contact you to arrange a suitable delivery date, normally within 3–5 days of ordering.
Selected Day deliveries operate 7 days a week, including weekends, subject to availability.
Outdoor Saunas & Ice Baths: delivered, unpacked and moved into position. Assembly and installation are not included.
Infrared Saunas & Hyperbaric Chambers: delivered in their packaging to your room of choice. Unpacking, assembly and installation are not included.
Selected Day delivery is available to UK mainland postcodes only.
Access
Please ensure there is safe and suitable access for your delivery, including driveways, gates, pathways, doorways, corridors and stairs where applicable.
If access is unsuitable, the delivery team may leave the product at the nearest safe accessible point.
Missed Deliveries
Missed or failed deliveries may incur a redelivery charge. Drivers may call ahead where possible, but this is not guaranteed.
Checking Your Order
Please inspect your order on delivery where possible and report any visible damage to us as soon as possible, preferably within 24 hours.
Non-Mainland UK Delivery
We deliver to non-mainland UK addresses for an additional surcharge. These deliveries are kerbside only.
International Delivery
We deliver to selected international destinations. For a shipping quote, contact hello@kove-designs.com with the product and destination.
Need Help?
Questions about delivery, access or lead times? Contact us at hello@kove-designs.com.
Warranty
KOVE Warranty
Every KOVE product is backed by KOVE’s comprehensive warranty programme, designed to give you confidence in your purchase.
For consumer customers (B2C), products are covered by the KOVE Manufacturer’s Warranty, which is provided in addition to your statutory rights under applicable consumer law.
For business and trade customers (B2B), products include a 2-Year Parts Warranty, unless otherwise stated.
Some products have additional warranty periods, maintenance requirements or exclusions depending on their construction, intended use or consumable components. We recommend reading the product-specific terms before purchase.
Read our full Warranty & Product Care Guide:
View Warranty & Product Care Guide →
