Tiny S CULT Thermowood, LightGray hot tub
- For 1-2 persons
- Oval compact design
- Heating time approx. 1.5 h
- Tailored to your needs
- Support with planning and installation
- A smooth process to your complete setup
Product description
A compact oval wood-fired hot tub designed for easy, everyday relaxation. Its efficient external heater warms the water reliably, while the space-saving shape fits naturally into smaller outdoor spaces. Simple, durable and made for real comfort.
Key facts - Hot tub
Heated by a real fire
The external wood-burning heater creates a genuine, soothing bathing experience — naturally relaxing and energy-independent.
Separate external heater for more space and safety
The heater is installed outside the tub, keeping bathers comfortable and maximizing space while ensuring easy maintenance and safe operation.
Easy to clean and maintain
The smooth plastic inner tub is hygienic, low-maintenance, and ready for regular use — no complex upkeep needed.
Finnish design since 2001
Designed and built in Finland since 2001, our tubs reflect Nordic expertise and dependable craftsmanship made for lasting outdoor use.
About
Tiny S CULT brings the pleasure of wood-fired bathing into a compact and welcoming form. Its soft oval shape feels inviting and natural, creating a calm retreat that blends effortlessly into gardens, patios and smaller outdoor spaces. The external wood-burning heater is crafted from high-quality marine-grade aluminum for durability and reliable heat performance. Positioned outside the tub, it provides more bathing space inside while ensuring steady, even water temperature. With its moderate water volume, heating remains efficient and easy to plan — ideal for relaxed afternoons or weekend rituals. The exterior is made from Finnish heat-treated pine, chosen for its durability and long-term stability in changing outdoor conditions. Inside, the light grey liner has a velvety smooth, delicately dotted surface that feels refined and timeless. Its soft, vibrant grey tone blends beautifully with natural surroundings and outdoor architecture. Two shaped seats support a relaxed soaking position for one or two bathers. The insulated oval cover improves heating performance and keeps the water warm for longer between uses. It protects the interior from debris and UV radiation, helping maintain the tub’s appearance over time. The cover is standardized according to EN 17125 as a safety cover, adding an extra layer of reassurance. Wooden steps are delivered pre-assembled, making installation straightforward and ensuring safe, stable access. Optional LED lighting adds a warm visual touch to your bathing experience. The factory-installed lights bring out the tub’s colors and create a calm, atmospheric glow as daylight fades. Harvia’s hot tubs draw on 25 years of Nordic hot tub expertise developed by Kirami — one of the world’s leading hot tub manufacturers and part of the Harvia team since 2021. This experience is reflected in thoughtful details, proven construction and dependable outdoor performance. Tiny S CULT proves that true relaxation does not require large dimensions — only good design, quality materials and time to enjoy the warmth.
Specifications
- SKU
- KIR-3508
- Exterior surface material
- Thermo‑pine
- Tub water volume
- 615 L
- Tub outer diameter
- 170 cm
- Tub power output
- 22 kW
- GTIN
- 6430036755676
Size & Weight
Product
- Height
- 210 cm
- Width
- 170 cm
- Depth
- 162.5 cm
- Net weight
- 92 kg
Package
- Height
- 113 cm
- Width
- 80 cm
- Depth
- 171 cm
- Gross weight
- 110 kg
Files
Everything included for the full sauna experience
Exterior
- Heat-treated pine panels with a brown tint Outlet valve kit
Interior
- Plastic benches, Grey
Heating Equipment
- CULT heater Chimney kit Adjustment grid for heater
Accessories
- Assembly instructions
Our materials
Find answers to the most common questions
Hot tub benefits
Natural recovery in warm water
Soaking in warm water helps muscles and joints relax by improving blood flow and easing stiffness. The gentle buoyancy reduces pressure on the body, supporting recovery after physical activity and relieving everyday tension.
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