Family M MACU ST CoalBlack, LightGray hot tub
- For 3-5 persons
- Family-safe
- Heating time approx. 2–2.5 h
- Tailored to your needs
- Support with planning and installation
- A smooth process to your complete setup
Product description
A practical wood-fired hot tub created for families and frequent use. Durable, easy-care materials keep maintenance simple, while the integrated comfort bench supports safe access and relaxed bathing for all 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 MACU is thoughtfully developed for shared outdoor bathing. Its layout supports safe movement and comfortable use for different ages, making it a reliable choice for families who bathe regularly. A built-in bench forms the core of the design. It simplifies stepping in and out of the tub, provides steady seating for children and offers ergonomic back support while relaxing in warm water. The bench also functions naturally as a cooling seat when taking a break from the heat. The LightGray interior surface is smooth, hygienic and comfortable against the skin. It resists dirt, does not peel and requires no surface treatment, ensuring effortless maintenance year after year. The exterior is finished in CoalBlack-stained Finnish spruce, giving the tub a natural yet modern character that blends easily into various outdoor settings. The external MACU wood-burning heater is manufactured from high-quality marine-grade aluminum and installed outside the tub to maximize interior space. Its efficient design allows the water to reach bathing temperature in approximately 1.5–2 hours depending on weather conditions — offering quicker access to warm relaxation. An insulated safety cover is included to maintain water temperature, shield the interior from UV exposure and keep debris out when not in use. Standardized according to EN 17125, it enhances safety — particularly important in family environments. Wooden steps are delivered pre-assembled for stable and convenient entry. 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. Manufactured in Finland and developed from 25 years of Nordic hot tub expertise by Kirami — part of the Harvia team since 2021 — the Family hot tub reflects trusted craftsmanship and materials designed for long-term outdoor performance. The Family Medium hot tub with MACU heater is ideal for families who value safe design, easy maintenance and a faster path to warm water.
Specifications
- SKU
- KIR-4250
- Exterior surface material
- Black spruce
- Tub water volume
- 1370 L
- Tub outer diameter
- 170 cm
- Tub power output
- 29 kW
- GTIN
- 6430036757038
Size & Weight
Product
- Height
- 260 cm
- Width
- 170 cm
- Depth
- 236 cm
- Net weight
- 145 kg
Package
- Height
- 123 cm
- Width
- 169 cm
- Depth
- 169 cm
- Gross weight
- 166 kg
Files
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
- MACU 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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