
HUUM Hive 18 package: the biggest HUUM heater with control, extension box, and stones, for saunas up to 1,236 cubic feet
The HUUM Hive 18 package brings HUUM’s largest floor standing electric sauna heater to rooms from 636 to 1,236 cubic feet in health clubs, gyms, and big home saunas. Made in Estonia, the 18 kW heater has a round stainless steel drum that measures 22 inches across and 29.5 inches tall on adjustable legs. It weighs 48.5 pounds empty and holds 552 pounds of stones directly against the heating elements. That full load of stones gives even a large room soft, steady heat and steam that lasts.
The package includes the heater, a HUUM UKU control with its sensors and cables, the UKU extension box, and 552 pounds of rounded olivine sauna stones. The extension box supports the control at this heater’s power level. The UKU sets the temperature from 104 to 230 degrees and can start the sauna up to 48 hours ahead. On the page you choose the control: the standard UKU, or the Wi-Fi, Mirror, or Gold version that lets you start the sauna from your phone. A safety rail, an embedding flange, a reflector panel, and a bucket and ladle set are optional. Already have a control and stones? Order the bare HUUM Hive 18 sauna heater. The HUUM Hive 18 package ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Features
Hive Series 18.0kW Sauna Heater
- Elegant design
- Suitable for commercial use
- 240V/1PH operation
- For sauna rooms from 636 to 1236 cu. ft.
- Works with UKU controls (sold separately)
- Works with UKU extension box (sold separately)
- Large 552-pound stone capacity (sold separately, Requires 17 boxes) or 463lbs with use of HIVE air tunnel
- Direct contact between stones and heating elements
- More exposed stones create a longer and milder heat
- Stainless steel construction
- Stainless steel, industrial quality heating elements
- Floor model with adjustable legs
- Designed, engineered, and made in Estonia
- Dimensions: 22″ Diameter (560mm) x 29.5″ H (750mm)
- SGS Listed
- Limited 5-year warranty (excluding elements)
UKU
- Sleek Black control display panel
- Multiple Color Options available (additional charges apply)
- Settable on/off, time, temperature, and delay
- Settable temperature range of 104-230F
- Delayed start up to 48hrs in advance
- Optional Built-in Wi-Fi interface for HUUM mobile app (additional charges apply)
- 8 Language options: English, German, Russian, Italian, Finnish, Estonian, Polish and French
- Inside/outside sauna room installation
- Optional smart heating setting
- Available decorative control display panels
- Displays set temperature and room temperature
- Temperature sensor
- Door sensor to keep the heat inside the room
- Remotely located main control module
- Connects to lights and ventilation
- Overheat protection
- Child safety lock
- Control Console Dimensions: 2.2″W (55mm) x 0.9″D (22mm) x 4.1″H (105mm)
- Main Control Module Dimensions: 3.5″W (90mm) x 2.3″D (58mm) x 5.6″H (142mm)
Stones 24
- Olivine diabase sauna stones
- Rounded shape to complement heater design
- Durable with high-heat capacity
- Stones range from 2″ to 4″ (5-10 cm)
Includes
Hive Series 18.0kW Sauna Heater
- 18.0kW Sauna heater
- Adjustable legs
- Installation and operation manual
- Limited 5-year warranty (excluding elements)
UKU
- Black Control console
- Main control module
- Temperature sensor
- Door sensor
- Control display panel cable
- Temperature sensor cable
- Door sensor cable
- Installation and operation manual
- 5-Year limited warranty
Extension Box
- For use with UKU controls
- For heaters over 11kW
- Dimensions: 7″W (178mm) x 6″D (152mm)7″H (178mm)
Stones 24
- 552 lbs of 2″ – 4″ (5-10 cm) round Olivine sauna stones
FAQ
What does the HIVE 18 package contain?
Per the includes tab: the 18kW floor-standing heater with adjustable legs, an UKU control system with sensors and cables, the UKU extension box required for heaters this size, and 552 pounds of 2 to 4 inch round olivine sauna stones – the whole system in one shipment.
How large a sauna does it serve?
Rooms from 636 to 1,236 cubic feet, the biggest rating in the HIVE line. The features tab marks it suitable for commercial use, which is exactly where rooms of that volume usually live – health clubs, spas, and gyms.
Why is an extension box in the package?
UKU controls need the extension box on heaters over 11kW per the includes tab, and at 18kW this is the largest heater in the range. Bundling it means the control chain arrives complete instead of stalling the installation on a missing part.
What electrical service does it demand?
The specification table lists 75 amps at 240V single-phase with breakers at 50 + 50 and wire at 8 + 8 AWG – two dedicated 50-amp circuits. This is serious electrical work for a licensed electrician, planned against the installation manual and local code.
Can it be scheduled or run remotely?
Yes. The UKU control supports delayed start up to 48 hours in advance and a settable 104 to 230 degree Fahrenheit range; choosing a Wi-Fi version in the on-page control options adds remote operation through the HUUM mobile app from anywhere.
How is delivery handled?
Palletized freight with a special delivery appointment – the listed shipping weight with stones is about 600 pounds. The driver lowers everything curbside at ground level, and the store contacts you first to review shipment details and any access issues at your site.
Shipping
The weight or packaging of this product requires delivery by special appointment, and on a wooden pallet.
The driver is responsible for curbside delivery “only” and will lower the items to ground level.
Prior to shipping this product, we contact customers to share shipment details and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses.