HUUM STEEL 9 Sauna Heater | 9 kW | 317 to 529 cu. ft.
$2,224.00
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Needs a HUUM UKU controller. Pick one in the options below. Square stainless HUUM tower heater, 9 kW for 317 to 529 cu. ft. Holds 331 lbs of stones.
Good to know before you order
Delivery
$350 flat-rate shipping. We call you to schedule delivery before it ships, and you can always ask us for a delivered price.
Installation
Electric heaters should be wired by a licensed electrician. Not sure it fits your sauna? Send us your sauna size and we'll check it.
Warranty
Covered by the manufacturer's warranty. If anything goes wrong, you call us and we handle it with the brand for you.
Ways to pay
Card, PayPal, Affirm or Klarna at checkout.
The HUUM STEEL is a slim, square stainless tower heater that holds 331 lbs of stones. That big stone load gives the soft, long-lasting heat HUUM is known for, and an internal air duct heats the room up to 25% faster. Short safety distances let it fit in tight corners. The STEEL 9 is 9 kW for rooms 317 to 529 cu. ft.
Why people pick it
- Holds 331 lbs of stones
- Slim square tower
- Heats up to 25% faster
- Short safety distances
- Stainless steel, made in Estonia
At a glance
Measure your sauna (length × width × height in feet) to get cubic feet. Glass walls, stone or tile add load, so size up if your room has a lot of them.
| Model | Power | Room size | Electrical | Stones needed | Price |
|---|---|---|---|---|---|
| STEEL 9 | 9 kW | 317 to 529 cu. ft. | 240V single phase, 37.5 A | 331 lbs, 3-5 cm (10 boxes) | $2,224 |
Your options, explained
Pick a controller Required
Every HUUM electric heater runs on a UKU controller, so you must pick one, or choose "I already have a HUUM UKU controller."
UKU Local, black$1,062Black wall panel for time and temperature. No app.
UKU Local, wood$1,375Same as the Local, with a wood panel.
UKU 4.2 Wi-Fi, black$1,324Adds the HUUM app so you can start the sauna from your phone.
UKU 4.2 Wi-Fi, wood$1,637Wi-Fi and the HUUM app, with a wood panel.
UKU Glass Wi-Fi$1,724Glass touch panel with Wi-Fi and the app.
UKU 4.2 Mirror Wi-Fi$1,987Mirror glass panel with Wi-Fi and the app.
UKU 4.2 Gold Wi-Fi$1,987Gold glass panel with Wi-Fi and the app.Add sauna stones
Stones are not included with the heater. HUUM stones come in 33 lb boxes.
HUUM stones, 3-5 cm$80 per boxThis heater takes 10 boxes. Pick 10 or 11 boxes above.Optional extras
Add any of these in the options above, or buy them later.
Rail S safety rail$409Keeps bathers from touching the hot heater.
Reflect S reflector panel$294Shields the wall behind the heater from heat.
Flange CS embedding flange$331Lets you build the heater into a bench or platform.Specs
| Series | HUUM STEEL 9 Sauna Heater |
|---|---|
| Size | 13.25″ W (336.5mm) x 13.25″ W (336.5mm) x 38.25″ H (971.5mm) |
| Weight | 33 lbs |
| Finish | Brushed Stainless Steel |
| Hardwired | Yes, by a licensed electrician |
| Listings | CE, SGS, IPX4 |
| Warranty | 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements) |
| Made in | Estonia |
What you need
- A HUUM UKU controller (required, pick one in the options above)
- HUUM sauna stones (see the table for how many)
- A licensed electrician to wire the heater on its own 240V circuit
Is it the right fit?
Great for
- People who want lots of stones in a small footprint
- Rooms 317 to 529 cu. ft.
Look elsewhere if
- You want a wall-mounted heater (see the DROP)
Documents
Not sure which size or control you need? Call or message us with your room size and power, and we will match it for you.
| Weight | 33 lbs |
|---|
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What our customers say
4.8 from 139 Google reviewsExtremely happy with our sauna from Cedar Sense. Extremely high quality product and everyone loves it. Mike provides unparalleled customer service and it’s worth every penny to go with him. I can’t think of any other company that I can call the owners phone and he picks up and answers my questions. Outstanding experience from beginning to end.
4 Person Barrel Sauna For Sale
Great customer service. The owner called me up and took good care of me. Rare in today’s world. Highly recommend. Thank you Mike.
Peter Ahlers-Nelson
Mike with Cedar Sense helped me get set up with an absolutely beautiful 6 person barrel sauna. We live in the mountains and opted for the iki wood heater and a big window to enjoy the view. The build construction was high quality. I had seen multiple other kits and barrel saunas and this one was over the top in being well made. We chose a metal roof due to the snow load as well. Mike delivered it and set it up perfectly on our back deck. The whole process was seamless and his communication was great. I would strongly recommend using Cedar Sense. In addition, he is always around and helpful for questions and anything else needed.
Brian Unterman
Mike … the owner is ‘amazing’ to work with, helpful, responsive & very knowledgeable. The ‘hot tub’ itself is attractive to look at, has a very efficient wood burner (WOW) & feels good size & shape wise when you are in the water. I’m very pleased. Tim
Tim Day
I gave a rating of 5 stars to Cedar Sense for the following reasons; Excellent Product Quality Excellent Product Variety and Availability Excellent Customer Service The Superior Integrity and Honesty of Mike the Owner.
Jeanne Parolini
Love! Mike did a great job walking me through picking the right sauna for our wants, modifying the benches to allow for hot yoga and delivering and installing for us! Cedar Sense knocked it out of the park for us and we could not be more happy! This sauna will be perfect for our whole family to use, to refresh relax and enjoy together! Thank you, thank you, THANK YOU!
6 Person Outdoor Sauna Cabin
Mike is such a great guy! Checked out his shop and products and enjoyed a fun coffee drink at Boozhi Brew. His saunas are beautiful and we are already trying to figure out a good time to use his portable sauna rental. Highly recommend!
Leah S
Item was as advertised, it is unique and well made. I have had compliments on it when others enter my sauna.
Sauna Doormat
Love this window as well as the larger one and door we bought. Cedar Sense is such a pleasure to work with…. Integrity and quality!!!
PROSAUNAS Framed Sauna Window 16″ x 30″
Cedar Sense was great to work with. They provided us with tongue-n-groove planking, glass framed entry door, sized & provided the sauna heater while promptly delivering our order. They also answered numerous questions while offering lots of free sensible advice. Highly recommend you reach out to Cedar Sense for all your Sauna needs.
Dan Markert
Couldn’t have asked for a better experience. Micheal is a top notch guy, spent all the time on the phone with me to not only give me information and insights on the saunas but also ideas that could help direct us and our business in the right direction! The sauna was bigger and more impressive than I would have imagined! So pleased with our purchase!
Cody Repovsch
I bought a cedar log swing from Cedar Sense, it was beautiful! I ordered it online, the communication was great. They built it and shipped it very quickly. I would recommend buying from them. Thank you Cedar Sense!
Jason Siegel
Our sign turned out real nice. Installation went well. Communicated with me in a timely manner via text, e-mail and via phone calls.
Jim Aakhus
What a great sauna that we got from Cedar Sense ! Michael was with us on the entire process from investigating products to purchase to delivery and set up Cedar Sense was right there! MINNESOTA COMPANY! ⭐️⭐️⭐️⭐️⭐️
chris grimm
I love your products; regionally unique, natural ingredients and locally sourced materials. Great gifts for all my friends living in Florida.
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Compare before you decide
The closest options above and below this one.
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Complete your setup
What most people add with a new heater.
You save Fresh stones for better steam
You save Bucket, ladle, thermometer and more
You save Keeps your head cool
Common questions
Is a controller included?
No. Every HUUM electric heater needs a HUUM UKU controller. Pick one in the options above, or choose "I already have one."
Local or Wi-Fi UKU?
UKU Local runs the sauna from the wall panel. UKU 4.2 Wi-Fi, Glass, Mirror and Gold add the HUUM app so you can start the sauna from your phone.
How many stones does it take?
Ten 33 lb boxes of HUUM stones.
How long until it ships?
Lead times vary by model and season. We confirm the timeline when you order and contact you before it ships.
Will this heater fit my sauna?
Heaters are sized by the volume of the sauna room. Check the room size range in the specs above, or send us your sauna's inside dimensions and we'll confirm the right size.
Do I need an electrician?
Yes. Electric sauna heaters should be wired by a licensed electrician, and most need a dedicated 240V circuit. The exact breaker and wire size are in the specs and manual.
Can I pay over time?
Yes. Choose Affirm or Klarna at checkout to split your order into monthly payments, subject to approval.
What about the warranty?
It's covered by the manufacturer's warranty. You don't have to deal with the brand yourself. Call us and we handle the claim for you.
Still have a question?
Mike answers calls and texts himself.
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