
HUUM Hive Mini 9: a 9 kW round floor heater for saunas from 317 to 530 cubic feet
The HUUM Hive Mini 9 is a floor standing electric sauna heater made in Estonia, rated at 9 kW for rooms from 317 to 530 cubic feet. Its round stainless steel body is about 18 inches across and 29.5 inches tall on adjustable legs. It weighs 36 pounds empty and holds 330 pounds of stones. The stones rest directly on the heating elements for soft, steady heat and long lasting steam.
You get the heater, adjustable legs, an air tunnel insert, and the manual. The insert speeds heating by about a quarter and reduces the stone load to about 265 pounds when fitted. It needs a HUUM UKU control to run, and you add that on the page. Choose the Wi-Fi version and you can start the sauna from your phone. Sauna stones are sold separately, so add the 10 boxes it needs on the page. A safety rail, an embedding flange, a reflector panel, and a bucket and ladle set are optional. Prefer the control and stones bundled in? See the HUUM Hive Mini 9 heater package. The HUUM Hive Mini 9 ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
FAQ
What size room fits this heater?
The Hive Mini 9 is designed for sauna rooms from 317 to 530 cubic feet. If your room is smaller or larger, the HIVE Mini series also comes in 6kW and 10.5kW versions, so you can match the heater to your measured room volume.
Does it need a separate control?
Yes – the description notes a UKU control or UKU Wi-Fi control is required for operation. Both are available in the Sauna Heater Controls add-on on this page, and the Wi-Fi versions work with the HUUM mobile app so you can preset the sauna from your phone.
How many stones do I need, and are they included?
The heater holds a 330-pound stone load, or about 265 pounds if the Air Tunnel is in use. Stones ship separately but are sold right on this page – the Required Stones add-on lists ten boxes of HUUM Stones 24 small (5-10 cm) stones for this model.
What does the included Air Tunnel do?
According to the includes tab, the Air Tunnel is a stainless-steel housing fitted in the center of the heater. It speeds heating by 25 percent, improves air circulation, and increases heating element lifespan, at the cost of roughly two boxes of stone capacity.
What are the electrical requirements?
The specification table lists 240V single-phase operation at 37.5 amps, with a 50-amp breaker and 8 AWG wire. That calls for a dedicated hard-wired circuit, so plan the installation with a licensed electrician and follow the manual and your local electrical code throughout.
How is it installed in the sauna?
It is a floor-mounted heater with adjustable legs for added flexibility on uneven floors. The unit is 18.1 inches in diameter and 29.5 inches tall, and its stones sit in direct contact with the heating elements for more efficient heat transference, per the description.
How long is the warranty?
The Hive Mini 9 carries HUUM’s limited 5-year warranty, excluding heating elements, and the unit is described as fully serviceable. It is SGS Listed and precision-crafted in Estonia from durable stainless steel with industrial-quality heating elements built for years of dependable operation.
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.