Celsium Ula Mini garden sauna - Compact & suitable for balconies
incl. VAT
🚚 Free shipping to the EU mainland & Switzerland for orders over €300
Elegant relaxation in your home
Immerse yourself in the world of minimalist wellness with the Ula Mini sauna from Celsium - a well thought-out overall concept in a round design that enables stylish relaxation even in limited space. This sauna combines modern design with the highest standards of comfort and functionality.
Product character - Ula Mini as a compact wellness capsule
The Ula Mini designer sauna is the smallest version of the Ula series - ideal for two people. Persons or intimate moments. Its organic round structure and clear lines create a contemporary, harmonious presence, whether in an urban garden or on a cozy balcony


Design & materials - Ula Mini solid wood & color variants
The Ula Mini design cabin impresses with a choice of classic wood types such as Nordic spruce, shou sugi ban (burnt spruce) or thermo-treated pine - combining aesthetics and stability. The color palette ranges from beige and grey to ebony, teak or hazel. You can also choose your own roof: Bitumen covering or weatherproof tarpaulin - all weather-resistant and durable
Technology & functions - Ula Mini Smart sauna for flexible use
The Ula Mini wellness cabin enables the integration of a wide range of Harvia and HUUM sauna heaters - electric or wood-fired, with classic or digital control panel, also with WLAN module. The equipment includes customized composition: without heater, to choose from to suit your location. The machines are delivered flat-packed or already assembled, depending on your requirements
Application & comfort - Ula Mini wellness cabin for individual enjoyment
With dimensions of approx. 2.05 m wide × 1.25 m deep × 2.10 m high (floor area approx. 2.08 m², weight approx. 400 kg), the Ula Mini comfort sauna offers you a space-saving wellness oasis for private leisure time. It has lime wood benches as standard, with Black Alder or Thermo Pine as an option for varying haptics and a feeling of warmth
Discover now - Experience contemporary sauna architecture
Stylish, space-saving, uncompromising quality - the Ula Mini Sauna is your private wellness island that fits flexibly into any environment. Design it according to your ideas and enjoy sauna pleasure at the highest level. Contact the team and design your own sauna - minimalist, elegant, perfect.
🔶 Scope of delivery
Everything at a glance - that's included!
- Exterior cladding in selected wood and color finish
- Interior benches made of lime wood (or optionally selected wood type)
- Front wall with glass door or all-glass front
- Roof covering: bitumen or tarpaulin
- Power connection module (230 V)
- Installation- and care instructions
Individual sauna solutions for the highest demands
Are you planning something special and looking for a solution that exactly matches your ideas?
Whether custom-made sizes, individual material requests, special color concepts or technical adaptations - almost anything is possible.
Thanks to flexible production, even demanding special requests can be professionally realized - with the aim of creating a wellness experience that fits seamlessly into your living space.
Do you have a special idea?
- Contact us directly - we will advise you personally and develop your dream sauna together.
Specifications
| Sauna capacity | 2 Persons |
| Dimensions (WxHxD) | 2.05m × 2.10m × 1.25m |
| Floor space | approx. 1.68 m² |
| Weight | approx. 250 kg |
| Exterior cladding | Spruce, Shou Sugi Ban, Thermo Pine |
| Color variants | Beige, Gray, Ebony, Teak, Hazel |
| Front glass | Door or complete glass front, optional rear glass |
| Bench material | Lime wood (standard), optional Black Alder or Thermo Pine |
| Heating system | Harvia or HUUM integration (not included) |
| Roof options | Bitumen shingles or tarpaulin cover |
| Mounting options | Supplied flat pack or assembled |
| Plank thickness | 44mm |
Instructions: How to find the right Sauna heater for your Celsium garden sauna
The right one Sauna heater heater is crucial for the overall sauna experience - it influences the heat quality, heating time and energy efficiency. So that you can exploit the full potential of your Celsium garden sauna, you will find a compact and well-founded guide to choosing the right heater here.
1. calculate the room volume correctly
First determine the internal volume of your sauna:
Width × depth × height = m³ (cubic meters)
Example for the Ula Micro: 1.35 m × 1.25 m × 2.30 m = approx. 3,9 m³
Important:
If your sauna has glass elements, thin outer walls or a free-standing location in the garden, you should also add approx. 1.5 m³ per square meter of uninsulated area should be added. This so-called insulation reserve compensates for heat loss.
2. choose the right heat output
The following applies as a guideline:
1 kW heat output per 1 m³ room volume
- For 4 m³ → ideally a stove with 4 kW
- For intermediate values, round up rather than down - so that your stove works reliably even at low outside temperatures
3. note the power connection
Depending on the model and output, there are two variants:
- 230 V connection (earthed plug) for compact sauna heaters
- 400 V three-phase current (heavy current) for more powerful models
Note: The connection must always be carried out by a qualified electrician.
5. control & comfort functions
Modern control systems not only offer temperature control, but also timer functions, app control and safety:
- Manual: classic rotary control module
- Digital: external control unit with precise temperature control
- SmartApp control via WLAN or 4G (e.g. HUUM UKU Wi-Fi)
