Celsium Ula Micro garden sauna - Compact & suitable for balconies
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🚚 Free shipping to EU mainland & Switzerland for orders over 300€
Stylish wellness for your garden, patio, and balcony
The Ula Micro Sauna from Celsium is an elegant Outdoor Sauna for two Persons – perfect for urban gardens, spacious balconies, or limited outdoor areas on rooftop terraces. Its clear, organic capsule shape blends harmoniously into modern architecture and natural spaces. With high-quality materials, a well-designed interior, and a minimal footprint, it offers true wellness – space-saving and uncompromisingly stylish.
Product characteristics – Ula Micro as Outdoor Sauna modern Outdoor Sauna
Measuring just 1.35 × 1.25 m and 2.30 m high, the Ula Micro fits even in demanding environments with limited space. Designed for two Persons, it offers an intense sauna experience in your private garden, on your balcony, or on your roof terrace. Ideal for anyone looking for a compact but fully-fledged Outdoor Sauna.


Design & Materials – Perfectly formed in wood and color
There are three high-quality wood types to choose from for the exterior cladding:
- Spruce – classically light and Nordic
- Shou Sugi Ban – charred spruce with a deep black texture
- Thermo pine – heat-treated for exceptional stability and warm coloring
You can also choose between five stylish color options (beige, brown, gray, natural white, and black) – designed to complement modern architecture or natural surroundings. The front wall is available as full glass or with a stylish wooden door with glass insert. For the roof, you can choose between a robust bitumen shingle covering or a weatherproof tarpaulin covering.
Function & design – Compact, well thought-out, ready to use
The Ula Micro is available either pre-assembled or as a flat pack – both designed for easy installation. It is prepared for the integration of various sauna heaters (heater and chimney not included in the basic package). The clearly structured design makes it easy to place on a terrace, balcony, or in the garden – even in limited spaces.
Usability & comfort – your Outdoor Sauna for everyday use
Inside, carefully crafted benches made of linden wood, black alder, or thermo pine provide natural warmth and a high level of seating comfort. With a compact footprint of just 1.68 m², the Ula Micro is the ideal choice for design enthusiasts who want private wellness in the smallest of spaces—flexible in placement and usable all year round.
Discover now
Turn your balcony, roof terrace, or garden into your own personal oasis of calm—with the Ula Micro Outdoor Sauna from Celsium. Minimalist in design, uncompromising in style and quality.
🔶 Scope of delivery
Everything at a glance – this is what's included!
- Exterior cladding and color scheme of your choice
- Interior benches in the wood type of your choice
- Front wall with glass element or wooden door
- Roof covering (bitumen or tarpaulin)
- Power connection module (230 V)
- Assembly and care instructions
Customized sauna solutions for the highest standards
Are you planning something special and looking for a solution that fits your ideas perfectly?
Whether custom sizes, individual material requests, special color concepts, or technical adjustments—almost anything is possible.
Thanks to flexible manufacturing, even demanding special requests can be professionally realized—with the goal of creating a wellness experience that fits seamlessly into your living space.
Do you have a special idea?
- Feel free to contact us directly—we will advise you personally and work with you to develop your dream sauna.
Specifications
| Capacity | 1–2 (1 seated, 2 standing) |
| Dimensions (WxDxH) | 1.35 m x 1.25 m x 2.30 m |
| Floor space | Approx. 1,68 m² |
| Weight | Approx. 250 kg |
| Exterior cladding | Spruce, Shou Sugi Ban, thermo pine |
| Color options | Beige, brown, gray, natural white, black |
| Front wall | Full glass or wooden door with glass insert |
| Roof | Black bitumen shingles or tarpaulin cover |
| Benches | Linden wood, black alder, or thermo pine |
| Heating | Not included |
| Installation options | Pre-assembled or flat pack, ready to plug in |
| Plank thickness | 44mm |
Instructions: How to choose the right Sauna Heater for your Celsium Outdoor Sauna
The right Sauna Heater is crucial for the overall sauna experience—it influences the heat quality, heating time, and energy efficiency. To help you get the most out of your Celsium Outdoor Sauna, here is a concise and informative guide to choosing the right heater.
1. Calculate the room volume correctly
First, determine the interior 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 exterior walls, or is freestanding in the garden, you should add approximately 1.5 m³ per square meter of uninsulated surface area. This so-called insulation reserve compensates for heat loss.
2. Choosing the right heating power
As a guideline:
1 kW heating capacity per 1 m³ room volume
- For 4 m³ → ideally a 4 kW heater
- For intermediate values, it is better to round up rather than down – so that your stove works reliably even at low outside temperatures.
3. Note the power connection
There are two variants depending on the model and performance:
- 230V connection (Schuko plug) for compact sauna heaters
- 400 V three-phase current (high-voltage current) for more powerful models
Note: The connection must always be carried out by a qualified electrician.
5. Controls & comfort functions
Modern control systems offer not only temperature control, but also timer functions, app control, and safety features:
- Manual: classic rotary control module
- Digital: external control unit with precise temperature control
- Smart: App control via Wi-Fi or 4G (e.g., HUUM UKU Wi-Fi)