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Take advantage of an all-in-one sauna heater solution with the HUUM Steel 9 kW Sauna Heater Package. This convenient kit comes with everything you need for operation: a HUUM Steel Heater, 330 lbs of stone, and an UKU Controller in your choice of style. Hand-picked by our sauna experts, these components will deliver reliable sauna sessions that leave you feeling refreshed and restored.
Transform your sauna into an oasis of restoration and natural elegance with the HUUM Steel 9 kW Electric Sauna Heater. This heater holds 330 lbs. of stone in a steel cage body that welcomes water-pouring, inviting you to experience traditional Finnish sauna. An integrated air tunnel supports the heating elements and stones, optimizing airflow to help your sauna reach temperatures up to 230℉.
The HUUM Steel’s minimal safety distance constraints make it perfect for custom builds and tight layouts where every inch counts. This heater is compatible with saunas ranging from 283 - 460 ft3 (adj.).
Dial in the perfect sauna experience with the included HUUM UKU Controller. This panel lets you adjust temperatures and schedule sessions in advance to ensure your sauna is ready when you are. It can also connect to sauna lighting and ventilation for convenient control over the mood of the session. Available in classic, wood, and glass models, this controller offers an effortless way to customize your sauna.
1x HUUM Steel 9 kW Sauna Heater
1x HUUM Steel Installation and Operation Manual
1x HUUM UKU External Controller
1x Main Control Module and Cable
1x Temperature Sensor and Cable
1x Door Sensor and Cable
1x Installation & Operation Manual
10x 33 lb. Boxes of HUUM Stones 12 (330 lbs. total)
| Model | Steel 9 |
| Heater Type | Electric |
| Sauna Size Range | 283 - 460 ft3 (adj.) |
| Stone Capacity | 330 lbs |
| Maximum Temperature | 230℉ |
| Kilowatt Rating | 9 KW |
| Heater Weight | 33 lbs |
| Shipping Weight w/ Stones | 366 lbs |
| 240V, 1 Ph Amperage | 37.5 Amps |
| Circuit Breaker Amperage | 50 Amps |
| Wire Size | 8 AWG |
| Heater Dimensions | 38.4”H x 12.6”W x 12.63”D |
| Safety Distances* |
Heater: Installation & Operation Manual UKU Controller: Installation & Operation Manual |
*Reference Installation & Operation Manual for full specs/wiring diagrams/safety distances
The HUUM Steel 9 kW 240V Electric Sauna Heater Package is recommended for saunas ranging from 283 - 460 ft3 (adj.).
Need assistance? Click the green chat button in the bottom right corner of your screen or call one of our Sauna Experts for help sizing your heater.
ATTENTION: Shipping and delivery times may increase based on seasons and holidays.
We will issue a 100% refund on orders canceled within 4 business days. If an order is canceled after this 4-day grace period ends, there will be a 3% cancellation fee. Please reach out to our support team if you need to cancel your order after it has shipped.
Our heaters include a 30-day return policy.
You can return this product if:
If these requirements are met, your return will be accepted. However, you will be responsible for the return shipping cost and a 20% restocking fee. After we receive the return and it has been inspected at our warehouse, we will refund your original payment method in accordance with the policy listed above.
The HUUM Steel brings exceptional heat and steam to create the optimal environment for rest and relaxation in your sauna. The minimalist design empowers the stones with top-tier airflow, bringing gentler steam for a pleasant sauna experience.
HUUM Steel will require 240V/1PH electrical line. In case you want to wire with 208V, the power output will go down by 25%. You will need a 50 Amp circuit breaker and your electrician needs to use wire size 8 AWG. You can see the wiring diagram for the system here.
This HUUM Steel sauna heater is suitable for home saunas up to 460 adjusted cubic feet. Use our calculator or contact if you want to verify the size of your sauna.
We'll check your order details to ensure everything's in place for your heater setup.
You'll receive an email with an estimated lead time and any manuals you'll need.
Our support team is available for any technical questions or guidance post-delivery.
We visited the HUUM factory and made some helpful content for you. Watch our unboxing video and learn more about the Cliff.
How It Works
Need a bit more help?
Read our Quote Form Tutorial or click the chat icon in the bottom right corner for live assistance.
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Our sauna experts are here to help.
If you have any questions about HUUM, call our toll-free number (725) 777-5484 or talk us on the chat found on the bottom right corner.
Not sure about the sizing of the heater? Use our sauna heater calculator to find out.
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