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HUUM CORE Electric Sauna Heater SS with Original Thermo Aspen Cladding

*stones & controller to be purchased separately*

(We recommend 2 x 15 kg boxes of Huum 5-10 cm sauna stones)

The HUUM CORE SS (Stainless Steel) electric sauna heater features high-quality materials with flexible design solutions, and is finished with a stainless steel top cover. This package includes HUUM's original thermo aspen wood cladding for all four sides, providing a beautiful natural finish that complements any sauna interior.

The HUUM CORE is a powerful electric sauna heater offering the option of a custom design to suit the design of your sauna. The compact size of this sauna heater makes it a perfect fit for smaller home saunas. CORE will heat your sauna efficiently, whilst providing a soft, pleasant steam experience.

The HUUM Core SS model has a stainless steel top cover and comes with original thermo aspen wood cladding panels for all four sides.

HUUM heaters are manufactured in Estonia, where they are crafted from stainless steel and other high-quality materials. Combined with a flexible, stylish Nordic design and the warmth of natural thermo aspen wood, the HUUM CORE makes a statement piece in a home sauna.

Controller: Depending on the controlling system you will opt for, the heater can be purchased either with the UKU Local (an easy-to use controller without Wi-Fi or mobile functionality), or the UKU Wi-Fi Controller (a remote-control option with Wi-Fi capabilities).

Safety Distances: See the wider image bank of this heater for a diagram about this heater's safety distances:

6kW: A= 40 mm & B= 480 mm & Upwards = 1200 mm

9kW: A= 40 mm & B= 480 mm & Upwards = 1200 mm

10.5kW: A= 40 mm & B = 480 mm & Upwards = 1200 mm

*SUFFICIENT AMOUNT OF STONES TO BE PURCHASED SEPARATELY

This heater must be installed by a qualified electrician. The CORE heater can be installed on both single phase 240v and three phase 400v power supplies.

Single Phase Connection: Please refer to the "HUUM Electric Sauna Heaters - Single Phase Connection" in the "Downloadable Files" tab if installing the electric heater on a single-phase power supply.

Please ask your electrician to take photos when installing the heater for the first time in the unlikely case there are any issues with the heater further down the line. We will ask for these to diagnose the issue as best as possible.

Refer to the installation manual for cable requirements. Click on the "Downloadable Files" tab to find the installation manual.

*Click on the Technical Specification tab for more information.

Warranty Information

For full details on product warranty, see HUUM's Limited Warranty Terms and Conditions. The heating elements are not included in the warranty.

About HUUM

HUUM is the leading manufacturer when it comes to unique designs and technology. HUUM has been awarded for their innovative and stylish sauna products. In 2015, the DROP sauna heater won the Red Dot Award for Product Design. The inspiration for the HUUM products come from nature. Combined with age-old sauna knowledge, smart technology and modern Nordic design, the HUUM heaters are a stylish and robust choice for any sauna. The amount of stones in HUUM heaters are optimized for the perfect, soft steam experience. The innovative HUUM heaters are easy to use and have all been UK CA- certified.

If you want to learn more about our HUUM heaters and explore more options, click on the following link: Our HUUM sauna heater collection.

HUUM UKU Controllers

The HUUM CORE can be purchased either with the UKU Local or the UKU Wi-Fi. Below are the features of the controller options.

UKU Local:

  • For heaters up to 18kW
  • Connectable to lights/ventilation and steamer
  • Overheating protection
  • Timer
  • Child safety lock
  • Available in a number of different colours, including black, white, wooden surrounds

UKU Wi-Fi:

  • For heaters up to 18 kW
  • Remote control via mobile app; Android / iOS
  • Connectable to lights
  • Unlimited users
  • Door magnet
  • Overheating protection
  • Timer
  • Child safety lock
  • Available in Black Glass or Mirror (Gold upon request too)

HUUM Cable Specification

Power input to UKU Main Module Power output between UKU and Huum Heater
SWA (steel wire armoured) SWA SiHF-J SiHF-J
Single Phase 230v Three Phase 400v Single Phase 230v Three Phase 400v
Power (kW) mm2 mm2 mm2 mm2
3.5 3 x 2.5 - 3 x 2.5 -
4.5 3 x 4 5 x 1.5 7 x 1.5 5 x 1.5
6 3 x 6 5 x 1.5 7 x 2.5 5 x 1.5
9 3 x 10 5 x 2.5 7 x 2.5 5 x 2.5
10.5 3 x 10 5 x 2.5 7 x 2.5 5 x 2.5
12 - 5 x 4 - 5 x 4
15 - 5 x 4 - 5 x 4
18 - 5 x 6 - 5 x 6

Why Choose Green Vista Living


At Green Vista Living, we’re passionate about providing top-quality renewable energy and eco-friendly products that not only enhance your life but also help protect the planet. We’ve built our business with one mission in mind: to be the go-to destination for renewable energy solutions, outdoor gear, and off-grid supplies. When you shop with us, you’re not just getting innovative products—you’re joining a community that’s committed to sustainability.

We Put Our Customers First


As a small, dedicated team, we care deeply about your experience. Unlike large, faceless online companies, Green Vista Living offers a personal touch in everything we do. We're here for you from start to finish—whether you need product advice, support after a purchase, or just have questions. Our knowledgeable customer service team is always just a phone call or email away, ready to assist you in any way possible.

We Share Your Passion for the Planet


Our love for the outdoors and sustainable living runs deep. Most of our team hails from the mountains of Colorado, where renewable energy and the environment are part of daily life. So when you call Green Vista Living, you’ll speak directly with an expert who understands both the technical side of renewable products and the lifestyle they support. Whether you’re looking for solar generators, EV chargers, or any of our eco-friendly offerings, you can trust us to guide you with expertise and passion.

Trusted Industry Experts


Our close partnerships with the best brands in renewable energy and outdoor gear give us insider knowledge that you won’t find anywhere else. We’ve taken the time to carefully select products that stand out for their quality and reliability. At Green Vista Living, we believe in understanding our products inside and out so that we can help you make the right choice with confidence.

More Reasons to Love Green Vista Living


Price Match Guarantee: Thanks to our partnerships, we offer the best prices around. If you find a better deal, we’ll refund the difference.


Free Shipping: We offer free shipping on most orders to the lower 48 U.S. states, making your shopping experience even easier.


100% Secure Ordering: Our site uses SSL Encryption technology to keep your payment and personal information safe and secure.


Volume Discounts: For large orders, we’re happy to provide special pricing—just reach out for a custom quote.


Authorized Dealer: As an authorized dealer for all our brands, you’ll receive full manufacturer warranties with every order.


At Green Vista Living, we aim to make your renewable energy and outdoor experience as seamless and enjoyable as possible. With our unmatched customer service, expertise, and dedication to quality, you can shop with confidence, knowing you’re supporting a company that’s as committed to the planet as you are.

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

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