--- title: HUUM STEEL Mini 4STU Pkg 3.5kW Sauna Heater Package public-url: https://norsesteam.com/product/huum-steel-mini-4stu-pkg-3-5kw-sauna-heater-package/ markdown-url: https://norsesteam.com/product/huum-steel-mini-4stu-pkg-3-5kw-sauna-heater-package.md generated: 2026-11-09 type: product product-type: simple brand: HUUM sku: STEEL Mini 4STU Pkg price: 2958.00 currency: USD availability: in_stock shipping-lower-48-usd: 0.00 --- # HUUM STEEL Mini 4STU Pkg 3.5kW Sauna Heater Package HUUM | SKU STEEL Mini 4STU Pkg | $2,958.00 USD | In stock Human page: https://norsesteam.com/product/huum-steel-mini-4stu-pkg-3-5kw-sauna-heater-package/ Prices in USD, accurate as of 2026-11-09. The human page always has the live price and the order button. ## At a glance | Field | Value | | --- | --- | | Brand | HUUM | | SKU | STEEL Mini 4STU Pkg | | Price | $2,958.00 USD | | Availability | In stock | | Shipping to United States 48 states | $0.00 (no shipping charge at checkout) | | Categories | Electric Sauna Heaters, HUUM, HUUM Heater Packages, Sauna Heater Packages, Sauna Heaters | ## Summary ✓ Free Shipping (Save $500) ✓ No Sales Tax (except WY) ✓ 100% Price Match Guarantee ✓ 30 Day Return Policy Guarantee sauna rooms up to 177 cubic feet Authorized Dealer – [Full Warranty Included](https://norsesteam.com/wp-content/uploads/2023/11/HUUM-Warranty-1.pdf) **Estimated Time of Arrival is between 7-10 business days** ## Description ### HUUM STEEL Mini 4 Package: small stones packed into a shallow wall mounted heater The HUUM STEEL Mini 4 Package pairs a wall mounted electric sauna heater with extra small stones. Those stones fit closely together inside a body just 6 inches deep, making this a useful choice when sauna space is tight. The heater, a HUUM UKU control, and the sauna stones all come in this package. A wall bracket is included too. The 3.5 kW heater suits rooms from 106 to 177 cubic feet. It gives you a slim heater without leaving the stones as a separate purchase. The included control is the black UKU Local. You can choose another UKU version as an upgrade on this page. The control lets you set a timer so the heater starts later, rather than turning it on right away. An air passage inside the heater helps the room warm up faster. Want ribs that lift out to make room for stacking the stones? See the [HUUM CLIFF Mini 4 Package heater set](https://norsesteam.com/product/huum-cliff-mini-4stu-pkg-4kw-sauna-heater-package/). The HUUM STEEL Mini 4 Package ships free from Norse Steam with No Sales Tax (except WY) and our 100% price match guarantee. ### Elegant Heaters in the Heart of Your Sauna Pure Nordic design of HUUM sauna heaters enhances the natural beauty of sauna stones and brings the sauna interior to life. HUUM sauna heaters embody the rustic yet elegant Nordic design that celebrates the natural beauty of sauna stones. Inspired by the organic shapes and forms found in nature, our sauna heaters are developed with sustainability in mind, ensuring durability and efficient use of materials. From our product development process to our packaging and publications, we strive to meet the requirements for environmental friendliness and sustainability certifications. Our goal is to provide not only a beautiful and relaxing sauna experience but also a responsible and eco-friendly one. ### Huum Electric Sauna Heaters Electric sauna heaters by HUUM stand out for several reasons. Each electric sauna heater is designed with a large capacity for sauna stones, which ensures a gentle and long-lasting steam experience. The pure Nordic design of HUUM’s electric sauna heaters enhances the natural beauty of the stones, bringing a unique aesthetic to any sauna. These award-winning electric sauna heaters combine functionality with timeless style, making them a top choice for sauna enthusiasts. [HUUM Electric Sauna Heaters](https://norsesteam.com/product-category/huum-electric-sauna-heaters/) ### Huum Sauna Controllers HUUM’s UKU sauna control systems stand out for several reasons. Each control system is designed for ultimate convenience and precision, allowing you to manage your sauna directly from the control panel or remotely via the HUUM mobile app. With advanced features like overheating protection, a child lock, and integration with lighting, ventilation, and steamer controls, HUUM’s UKU control systems let you fully customize your sauna experience. Available in stylish designs like CLASSIC, GLASS, and WOOD, these systems combine functionality with modern elegance. [HUUM Sauna Controllers](https://norsesteam.com/product-category/sauna-heater-controls/) ## Additional information - Heater Control Package UKU Local Black, UKU Local w/Blue Case, UKU Local w/Grey Case, UKU Local w/Sand Case, UKU Local w/White Case, UKU Local w/Wood Case, UKU WiFi Black, UKU WiFi w/White Case, UKU WiFi w/Blue Case, UKU WiFi w/Grey Case, UKU WiFi w/Sand Case, UKU WiFi w/Wood Case, UKU WiFi Glass, UKU WiFi Mirror, UKU WiFi Gold ## Features **STEEL Mini 3.5kW Sauna Heater** - Slender design - Suitable for use in small saunas with limited space - Small safety distances - Heats up to 25% faster due to internal air duct - Works with UKU controls (sold separately) - 133 pound stone capacity (required 4 boxes sold separately) - Direct contact between stones and heating elements - More exposed stones creates a longer and milder heat - Stainless steel construction - Stainless steel, industrial quality heating elements​ - Wall-mount model - Designed, engineered, and made in Estonia - Dimensions: 12.6″ W (320mm) x 6″ D (150mm) x 38.4″ H (975mm) - Limited 3-year residential warranty and limited 1-year commercial warranty (excluding elements) **UKU** - Sleek Black control display panel - Multiple Color Options available (additional charges apply) - Settable on/off, time, temperature, and delay - Settable temperature range of 104-230F - Delayed start up to 48hrs in advance - Optional Built-in Wi-Fi interface for HUUM mobile app (additional charges apply) - 8 Language options: English, German, Russian, Italian, Finnish, Estonian, Polish and French - Inside/outside sauna room installation - Optional smart heating setting - Available decorative control display panels - Displays set temperature and room temperature - Temperature sensor - Door sensor to keep the heat inside the room - Remotely located main control module - Connects to lights and ventilation - Overheat protection - Child safety lock - Control Console Dimensions: 2.2″W (55mm) x 0.9″D (22mm) x 4.1″H (105mm) - Main Control Module Dimensions: 3.5″W (90mm) x 2.3″D (58mm) x 5.6″H (142mm) - Limited 3-year residential warranty and limited 1-year commercial warranty **Stones 12** - Olivine diabase sauna stones - Rounded shape to complement heater design - Durable with high-heat capacity - Stones range from 1″ to 2″ (3-5 cm) ## Includes **STEEL Mini 3.5kW Sauna Heater** - 3.5kW Sauna Heater - Wall Fastening Bracket - Installation and Operation Manual - 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements) **UKU** - Black Control Console - Main Control Module - Temperature Sensor - Door Sensor - Control Display Panel Cable - Temperature Sensor Cable - Door Sensor Cable - Installation and Operation Manual - 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty **Stones 12** - 132 lbs of 1″ to 2″ (3-5 cm) Round Sauna Stones ## Specifications - Model STEEL Mini 4STU Pkg | STEEL Mini 4 | | | --- | --- | | Kilowatt Rating | 3.5kW | | Minimum Cubic Feet | 106 | | Maximum Cubic Feet | 177 | | Heater Weight | 32 lbs | | Shipping Weight with Sauna Stones | 165 lbs | | 240V, Single Phase Amperage | 14.58 Amps | | Width | 12.6″W (320mm) | | Depth | 6″D (150mm) | | Height | 38.4″H (975mm) | | UKU | | | --- | --- | | Minimum Temperature Setting | 104°F | | Maximum Temperature Setting | 230°F | | Shipping Weight | 20 lbs | | Console Dimensions | | | Width | 2.2″ (55mm) | | Depth | 0.9″ (22mm) | | Height | 4.1″ (105mm) | | Main Module Dimensions | | | Width | 3.5″ (90mm) | | Depth | 2.3″ (58mm) | | Height | 5.6″ (142mm) | | Display Panel Cable | | | Length | 9.8 ft | | AWG | 22 | | Temp Sensor Cable | | | Length | 16.4 ft | | AWG | 24 | | Door Sensor Cable | | | Length | 16.4 ft | | AWG | 24 | ## Manuals [HUUM-STEEL-Sauna-Heater-IOM.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2025-11/HUUM-STEEL-Sauna-Heater-IOM.pdf) [HUUM Elements Required.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2022-03/HUUM%20Elements%20Required.pdf) [HUUM-UKU-Control-IOM.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2025-12/HUUM-UKU-Control-IOM.pdf) [HUUM-UKU-Installation-Diagram.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2025-05/HUUM-UKU-Installation-Diagram.pdf) [UKU Glass.Mirro Install Diagram.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2022-01/UKU%20Glass.Mirro%20Install%20Diagram.pdf) [Extension-Box-Installation.pdf](https://prod-cms.bathingbrands.com/sites/default/files/2022-01/Extension-Box-Installation.pdf) ## Images - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-local-black.jpg (HUUM STEEL STU Pkg Sauna Heater Package local black) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-wood-local.jpg (HUUM STEEL STU Pkg Sauna Heater Package wood local) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-wifi-black.jpg (HUUM STEEL STU Pkg Sauna Heater Package wifi black) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-wifi-wood.jpg (HUUM STEEL STU Pkg Sauna Heater Package wifi wood) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-wifi-glass.jpg (HUUM STEEL STU Pkg Sauna Heater Package wifi glass) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-wifi-gold.jpg (HUUM STEEL STU Pkg Sauna Heater Package wifi gold) - https://norsesteam.com/wp-content/uploads/2023/12/HUUM-STEEL-STU-Pkg-Sauna-Heater-Package-mirror-wifi.jpg (HUUM STEEL STU Pkg Sauna Heater Package mirror wifi) ## Store information - 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