Family M CULT-si ST CoalBlack, LightGray hot tub
- For 3-5 persons
- Family-safe
- Heating time approx. 2.5–3 h
- Tailored to your needs
- Support with planning and installation
- A smooth process to your complete setup
Product description
A family-friendly wood-fired hot tub designed for easy care and relaxed everyday use. Hygienic, low-maintenance materials and a thoughtfully integrated bench make bathing comfortable, accessible and enjoyable for different ages.
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
Family Medium CULT-si is designed to make outdoor bathing easy, safe and welcoming for the whole family. Its practical layout supports users of different ages and physical abilities, making it a natural gathering place in the garden or on the terrace. The integrated bench is central to the design. It improves access when climbing in and out of the tub, provides comfortable back support during bathing and offers a practical seating area for cooling down. For children, the bench creates a more secure sitting position, enhancing overall safety and confidence. Both the interior and exterior materials are selected for durability and easy maintenance. The smooth LightGray inner surface feels velvety against the skin, resists dirt and remains neat without surface treatment. The outer shell is crafted from Finnish spruce panels stained in a deep CoalBlack tone, creating a natural and timeless look that blends beautifully into outdoor environments. The external CULT wood-burning heater, made from high-quality marine-grade aluminum, delivers steady and reliable heating. Positioned outside the tub, it maximizes bathing space. Heating typically takes approximately 2.5–3 hours depending on weather conditions. An insulated safety cover is included to retain heat, protect the interior from UV exposure and keep debris out of the water. Standardized according to EN 17125, it enhances safety — particularly important for families. Wooden steps are delivered pre-assembled for stable and secure access. LED lighting is available as an optional feature to elevate the overall experience. Integrated lights enhance the tub’s appearance and provide a pleasant ambient light for evening use. Manufactured in Finland and built on 25 years of Nordic hot tub expertise developed by Kirami — part of the Harvia team since 2021 —the hot tub combines proven craftsmanship with thoughtful, family-oriented design. The Family Medium with CULT hot tub offers warm, wood-fired comfort designed for shared outdoor moments.
Specifications
- SKU
- KIR-4247
- Exterior surface material
- Black spruce
- Tub water volume
- 1370 L
- Tub outer diameter
- 170 cm
- Tub power output
- 22 kW
- GTIN
- 6430036757007
Size & Weight
Product
- Height
- 210 cm
- Width
- 170 cm
- Depth
- 258 cm
- Net weight
- 141 kg
Package
- Height
- 123 cm
- Width
- 169 cm
- Depth
- 169 cm
- Gross weight
- 162 kg
Everything included for the full sauna experience
Exterior
- Spruce panels stained with a dark coal 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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