Heirloom Obsidian Cold Plunge by HUMMEL
100% Designed and Made in Germany
Standard production time: 10–12 weeks
Express production: 4–6 weeks
The Heirloom Obsidian Cold Plunge represents minimalist, monolithic design. Its anthracite HPL exterior combined with a matching metal top trim creates an exclusive ice bath for contemporary architecture and sophisticated wellness environments.
80 mm Solid Timber Construction
At the core of the Heirloom Obsidian is an 80 mm solid timber wall construction. This robust structure provides outstanding stability, durability, and long-term performance for use on terraces, in gardens, or private spa areas.
Anthracite HPL Exterior
The exterior is finished with premium anthracite High Pressure Laminate (HPL). Its matte surface creates a clean architectural appearance while offering exceptional durability and low maintenance.
Anthracite Metal Top Trim
The upper edge features a powder-coated anthracite metal trim. The seamless combination of façade and trim creates a calm, monolithic design language.
Durable Inner Basin
The premium inner basin offers a smooth, hygienic, and easy-to-clean surface. It is specifically designed for regular use as an ice bath, cold plunge, or cold-water immersion tub.
Floating Aluminium Base Frame
A recessed aluminium base frame creates a precise shadow gap, giving the cold plunge its elegant floating appearance and clearly defined architectural lines.
Optional Cooling & Filtration System
For year-round convenience, the Heirloom Obsidian is optionally available with an integrated cooling and filtration system. The technology is factory-installed, fully tested, and delivered ready for installation.
Product Highlights
- Premium anthracite HPL exterior
- Matching anthracite metal top trim
- 80 mm solid timber construction
- High-quality inner basin
- Floating aluminium base frame with shadow gap
- Optional cooling and filtration technology
- Fully assembled and factory-tested
- Premium ice bath for modern architecture
Optimal Water Hygiene for Your Premium Ice Bath
A premium ice bath or outdoor cold plunge is defined not only by powerful cooling performance but also by reliable water hygiene. To keep your garden ice bath hygienic, crystal clear, and easy to maintain, you can choose from three different water treatment concepts.
Water Hygiene Without Chlorine
If you prefer to operate your designer cold plunge without chemical additives, the premium filtration system provides continuous water purification. We additionally recommend a complete water replacement approximately every 6–8 weeks. This minimizes organic contamination and keeps your home ice bath clean and ready for use.
Water Hygiene with Chlorine
Traditional chlorine disinfection provides the highest level of hygiene by reliably protecting the water against bacteria, viruses, and algae. It is particularly recommended for frequently used cold plunge tubs or cooled ice baths. Even with chlorine treatment, a complete water replacement every 6–8 weeks is recommended to maintain premium water quality.
Water Hygiene with UV-C Technology
UV-C disinfection significantly reduces bacteria, germs, and algae within the water circulation system while minimizing the need for chemical disinfectants. Combined with a high-performance filtration system and complete water replacement every 6–8 weeks, it provides crystal-clear water and an exceptionally comfortable bathing experience—ideal for your outdoor cold plunge or premium cold-water immersion tub.
Our Recommendation
Whether you are looking for a premium cold plunge, an exclusive garden ice bath, or a long-lasting premium cold plunge, the right water treatment concept combined with regular water replacement ensures outstanding hygiene, low maintenance, and long-term enjoyment. Choosing the appropriate hygiene system guarantees consistently excellent water quality and maximum performance throughout the lifetime of your cold plunge.
