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Yakia 400 XL outdoor sauna beside a swimming pool

Yakia 400 Series

Yakia 400 XL Outdoor Sauna

The 400 design with seating for six.

£16,794

Fully installed, inc. VAT (£13,995 + VAT). Short lead times.

  • Free site survey
  • Delivery to your home
  • A prepared, level base
  • Dedicated electrical connection by our qualified electrician
  • Full assembly and installation
  • Electric heater, sauna stones and LED lighting
External size (W × D × H)
217 × 229 × 235cm
Internal size (W × D × H)
187 × 184 × 205cm
Footprint
5.0m²
Interior volume
7.1m³
Seats
4–6 people
Standard heater
9kW electric
Lead time
Short
Warranty
2 years (Yakia)

Optional upgrades: HUUM heaters and accessories. Final price subject to upgrades and accessories chosen.

About the Yakia 400 XL

The largest of the flat-roof 400 series, with seating for up to six and 7.1m³ inside. The same modern lines and full-height glazing as the 400 L, with more room on the benches.

A modern square cabin in vertical Thermowood cladding with black frames, a flat overhanging roof and full-height glazing. Supplied as a kit and built in place.

Best for: Entertaining and larger households.

The Cabin

  • 40mm Thermowood walls, 28mm Thermowood floor
  • 30mm Kingspan insulated roof panels
  • Full-height glazing with 8mm tempered bronze-glass door
  • Two-level benches and backrest in thermo-aspen
  • LED lighting under the benches and backrest
  • Steel wall-mounted 9kW electric heater with built-in controls and timer, plus stones

Before You Order

Fitting the Yakia 400 XL in Your Garden

Space. The cabin takes up 217 × 229 × 235cm, a footprint of 5.0m². Allow room around it for the door to open and for treating the timber each year. We measure up at the free site survey.

Access. The Yakia 400 XL arrives as flat-packed panels and is built in place, so it will go through a standard side gate.

Power. The 9kW heater needs its own circuit from your consumer unit, drawing around 39 amps on a standard single-phase supply. Our electrician installs and certifies it — it's included in the price.

Planning. At 235cm tall, the Yakia 400 XL is under the 2.5m height limit for outbuildings near a boundary, so in most gardens it won't need planning permission. Much of Sandbanks and the Poole Harbour shoreline is in a flood zone, several Poole and Bournemouth neighbourhoods are conservation areas, and the land around Wimborne and Christchurch is South East Dorset Green Belt. A garden sauna is usually still permitted development, but we check flood risk, height and boundary rules for your plot before you order.

Heater upgrade. Prefer a HUUM? As an optional extra we can fit a 9kW HUUM DROP, CLIFF, HIVE Mini or STEEL with Wi-Fi control. Compare HUUM heaters.

Get Started

Book a Site Survey for the Yakia 400 XL

Free design consultation, no obligation. We reply within 48 hours — or call 07877 600117.

Call Enquire