About this product

HUUM Hive Mini 9kW - Premium Steam for Large Saunas

The HUUM Hive Mini 9kW is the powerhouse of the Hive Mini lineup, delivering commanding heat output for large saunas up to 450 cubic feet. Its massive stone capacity - larger than any wall-mounted alternative - produces exceptionally soft, humid löyly that transforms every session into an authentic Finnish sauna ritual. The organic sculptural design is a conversation piece inside any sauna.

Ideal for our 6-person barrel saunas and custom builds. Compatible with UKU WiFi controller for remote scheduling. Operates on 240V/50A. Complete package included. Free shipping.

The HUUM HIVE Mini 9STU sauna heater package comes complete with the traditionally designed HIVE Mini 9kW sauna heater, UKU control (Wi-Fi optional), and sauna stones. This package has everything you need to build your dream sauna experience and has been engineered for sauna rooms up to 530 cubic feet (CF). 

Buying Guidance

Huum Hive Mini - 9kW Sauna Heater Package is part of the SweatDecks Electric Sauna Heater catalog. Before ordering, confirm compatibility with your sauna, steam shower, cold plunge, or outdoor wellness setup, including dimensions, electrical requirements, finish, model number, and any manufacturer-specific parts.

Shipping, Warranty, and Support

SweatDecks helps customers compare equipment, understand delivery requirements, and review manufacturer warranty coverage from HUUM. If you are matching this item to an existing system, check the product model, installation manual, and any required accessories before checkout.

Questions Before You Buy?

Contact the SweatDecks team for help choosing the right sauna, cold plunge, heater, steam, or accessory product. We can help you think through placement, installation planning, and whether this item fits the setup you are building.

What is included
Included

HIVE Mini 9.0kW Sauna Heater

  • 9.0kW Sauna Heater
  • Adjustable Legs
  • Pre-Installed HIVE Air Tunnel
  • Installation and Operation Manual
  • 5-Year Limited Warranty (Excluding Elements)

UKU Control

  • 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

Stones 24

  • 330 lbs of 2" - 4" (5-10 cm) Round Sauna Stones 
Specifications
Specifications

HIVE Mini 9

Kilowatt Rating - 9.0kW

Minimum Cubic Feet - 282

Maximum Cubic Feet - 530

Heater Weight - 40.3 lbs

Shipping Weight with Sauna Stones - 370.3 lbs

240V, Single-Phase Amperage - 37.5A

Circuit Breaker - 50A

Wire Size - 8AWG

Diameter - 18.1" (460mm)

Height - 29.5" (750mm0

What our customers say

5.0 36 reviews
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Maurice Montoya August 2026 · Google review

I love the Sauna and cold plunge I purchased from Sweat Decks. In addition to providing great products, their office is extremely helpful. My backyard is now a delightful retreat.

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Hudson Davis-Ross April 2026 · Google review

We had a great experience overall working with this team. They built and installed our sauna and also constructed a staircase leading up to it, and the final result exceeded expectations. I’ll note that things were a little bumpy right after purchase — the original person we worked with ended up leaving without notice, which caused some initial confusion. That said, the team handled it really well. Huge shoutout to Heath and Brandon for stepping in, taking ownership, and getting everything back on track. They were incredibly professional, thorough, and easy to work with throughout the rest of the process. From there, everything ran smoothly. The craftsmanship is excellent — the sauna looks beautiful, feels high quality, and the staircase ties everything together perfectly. You can tell a lot of care went into both the design and execution. They showed up when they said they would, communicated clearly, and kept everything clean and organized during the build. In the end, they absolutely delivered. Really happy with how everything turned out and would definitely recommend them.

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Brendan Mullen March 2026 · Google review

I got a sauna and a plunge in the backyard from Sweatdecks. It was a one stop shop. After delivery, build, and execution they continue to be responsive for questions, and recommendations. Top shelf company. 5 stars! Many thanks, Heath.

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Thomas Laffont September 2025 · Google review

Sweat Decks was incredible to work with! They built out my hot tub, sauna, and cold plunge and everything turned out amazing. The whole process was smooth, the team was professional, and they went above and beyond to make sure everything was perfect. What impressed me most is that the service didn’t stop once the build was done — they’ve been super responsive and helpful with any follow-up. Couldn’t recommend them more! ⭐⭐⭐⭐⭐

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Otis Grigsby June 2025 · Google review

We went with Sweat Decks for our sauna installation and couldn’t be happier with the decision. They started with a site visit to figure out the best placement. We prioritized views and access to power and water and fortunately the best spot was also the least expensive for the build. There was a rough work visit from the electrician a few days before install, where he met with the courier to secure delivery of the sauna and heater. Then the guys came out and installed it in one day that weekend. For the longest, I had in my mind this idea that I could just DIY this project (and I could!), but why do that when you’ve got some experts who can get the job done right the first time! After getting the sauna my sleep stats are improved and my resting heart rate is down significantly. As parents, I believe this was one of the best investments we could’ve made! If you’re looking at Sweat Decks for the work, my guess is you’re already sold on their quality based on the reviews, but you’re not sure about the cost. That’s where we were for a while before just pulling the trigger. My only regret is waiting so long to get this sauna!

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Katie Wells March 2025 · Google review

We love our sauna and cold plunge! We have used them without fail everyday since they have been installed. Working with Brandon has been super easy, he is very responsive and happy to answer any questions along the way.\ I’ve owned other saunas and a different cold plunge that required manual chilling. The difference is undeniable. The sweat decks products are superior and 100 times easier to use on a daily basis. The whole family loves them both.