A Spacious Sanctuary for Four The Yakia 400L is designed for those who want a true, roomy sauna experience at home. With comfortable seating for four, this 4-seater outdoor sauna is the perfect place to unwind with family or friends, or simply to stretch out and enjoy the heat in peace.

Built for Performance and Comfort We have combined traditional Nordic design with modern, high-quality materials to ensure your sauna performs perfectly in the UK climate.

Superior Insulation: Features 40mm thick Thermowood walls and a 30mm Kingspan insulated roof to keep the heat inside where it belongs.
Premium Timber: Crafted from heat-treated Thermowood, which is highly resistant to rot, moisture, and insects.
Authentic Feel: Includes two-level benches and a backrest made from Thermo-Aspen wood, providing a comfortable, smooth, and heat-resistant seat.
Atmospheric Lighting: Built-in LED lights behind the benches and backrests create a soft, calming environment for your relaxation sessions.

Technical Specifications

Capacity: 4-seater.
Heating Power: 9kW electric wall-mounted heater.
External Dimensions: 229 x 229 x 235cm.
Internal Volume: 6.3m³.
Glazing: 8mm tempered bronze glass door and 6mm tempered bronze glass window.

Important: Electrical Requirements This sauna includes a 9kW heater that requires a dedicated power supply. It cannot be plugged into a standard wall socket.

Power Requirement: 40-amp supply.
Installation: A qualified electrician must install a dedicated circuit, an isolator switch, and ensure all connections are properly grounded, tested, and certified. Please consult your electrician before purchase to ensure your property has the required electrical capacity.

Protecting Your Investment To keep your sauna looking its best and to ensure your warranty remains valid, you must treat the exterior timber with a high-quality clear wood preservative (we recommend Ronseal Trade Total Wood Preserver) immediately after installation. This protects the wood from natural weathering and fading.

4-seater outdoor sauna

Yakia 400L – 4-Seater Outdoor Electric Sauna