01 — the sauna

2,100 numbered outdoor units

Then production closes. Seven modular components configured to site, climate, and use. One design language, one manufacturing standard. Indoor installations are unlimited, bespoke.

Manufactured by KOERNER Saunabau, Albstadt — est. 1949, third generation.

outdoor installations · indoor installations

02 — configuration

Seven modules

A fixed set of components that adapt to any site. Select modules based on location, program, and budget. The system scales from a single sauna cabin to a full outdoor ritual.

Sauna

The core. Panoramic glass cabin. Finnish sauna, 80–110°C. 4–6 persons.

3.3 × 2.2 × 2.5 m

Swimming Bridge

Direct water access. Powder-coated steel, wooden deck.

1.5 × 2.0 × 0.3 m

Changing Room

Transitional space. Skylit. M4 mounting optional.

1.5 × 2.0 × 2.5 m

Thermal Module

Compute hardware as heat source. 3,500 W. Optional.

site-dependent

Outdoor Shower

Wall-mounted. Stainless steel 316L, marine-grade.

0.5 × 0.1 × 2.0 m

Outdoor Storage

Weather-sealed. Robes, towels, slippers.

0.6 × 0.3 × 1.5 m

Cold Plunge

Self-contained basin. Cold immersion.

1.5 × 2.0 × 2.5 m

03 — thermal module

compute hardware as heat source

same electricity — used twice. heat for the space. hard asset for your savings.

hidden within the m3 bench or bespoke integration. economics scale with two inputs: thermal demand and electricity price. we assess feasibility in the site review.

specifications

Technical overview

design	Groundwork Studio, Copenhagen
manufacture	KOERNER Saunabau, Albstadt (est. 1949)
outdoor units	2,100 numbered, then production closes
indoor units	unlimited, bespoke, priced per project
base footprint	~22 m² (full outdoor configuration)
electrical	400V three-phase
lead time	~8 weeks from confirmed order
materials	architectural timber, panoramic glass, stainless steel 316L, powder-coated black steel
roof	double side-pitched slate
heater	curated selection, specified during design phase

Full specifications: product sheet

pricing

Configured to site

base outdoor unit (M1 + M3 + M6)	from EUR 55,000

M2 swimming bridge	EUR 3,111
M4 thermal module	EUR 3,111
M5 outdoor shower	EUR 3,111
M7 cold plunge	EUR 12,111
delivery + installation	~EUR 7,777

full configuration	from ~EUR 84,221

Final price confirmed after design phase. All prices excluding VAT. Foundation and site preparation separate.

Indoor installations: bespoke. Priced per project.

how it works

Three steps

01 configure

Select modules. Define your site. Use the site planning tool to model configuration, M4 feasibility, and installation requirements.

02 assess

Site visit. Electrical, structural, and climate evaluation. Design phase. Refined project scope.

03 install

KOERNER manufactures. Delivered and assembled on site. Foundation and site preparation run in parallel. Approximately 8 weeks from confirmed order.

contact

seven modules. one sauna.