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Description

HUUM STEEL 9.0STU Pkg combines a 9 kW electric sauna heater, UKU control, and 330 lb sauna stones for sauna rooms 283–460 ft³. Designed for compact and modern builds, this floor-standing heater pairs a slim footprint with fast heat-up and a stone-heavy core for a gentle, even steam.

At the center of this kit is the STEEL 9.0 kW heater: a tall, stainless-steel enclosure that showcases the stones while keeping safety distances small for tighter layouts. An internal air tunnel is engineered to improve airflow and speed sauna heating, while the direct contact between stones and heating elements supports a steady, comfortable warmth. With a 330 lb stone capacity, you get the stone volume many sauna users want for longer, milder heat that feels consistent throughout the room.

Control is handled through the included UKU system, giving you straightforward command of on/off, time, temperature, and delay start scheduling. The system supports installation inside or outside the sauna room, uses a separate main control module, and includes both a temperature sensor and a door sensor to help keep heat inside the space. Temperature is adjustable within the 104–230°F range, and the delay start function can be set up to 48 hours in advance. If you want remote control capability, the control system supports an optional built-in Wi-Fi interface for use with a mobile app (configuration dependent).

This package also includes 330 lb of round sauna stones selected to complement the heater’s design. The stones are olivine diabase, with a rounded 1"–2" (3–5 cm) size range and high-heat capacity characteristics for stable heat retention. Whether you’re outfitting a new sauna room or upgrading an older heater/control combination, the STEEL 9.0STU package brings the key components together in one coordinated set.

About the brand: HUUM designs and manufactures sauna products in Estonia, with a focus on clean, modern aesthetics and engineering choices that support practical installation and long-term use. The STEEL series emphasizes a compact footprint, stainless-steel construction, and a stone-forward layout intended to deliver a milder steam experience while supporting responsive control through the UKU system.

Key Features

  • 9 kW electric sauna heater package
  • Model: STEEL 9.0STU Pkg
  • Designed for sauna rooms from 283 to 460 ft³
  • Floor-standing heater design
  • Stainless-steel enclosure
  • Stainless-steel, industrial quality heating elements
  • Internal air tunnel construction
  • Heats up to 25% faster due to internal air duct design
  • Small safety distances design approach
  • Direct contact between stones and heating elements
  • More exposed stones intended to create longer, milder heat
  • Stone capacity: 330 lb
  • Included stones: 330 lb of round sauna stones
  • Stone material: olivine diabase
  • Stone shape: rounded
  • Stone size range: 1" to 2" (3–5 cm)
  • UKU control system included
  • Black control console included (base configuration)
  • Settable on/off control
  • Settable time control
  • Settable temperature control
  • Settable delay start control
  • Settable temperature range: 104–230°F
  • Delayed start up to 48 hours in advance
  • Optional built-in Wi-Fi interface for mobile app control (configuration dependent)
  • Multiple control display panel options available (configuration dependent)
  • 8 language options available: English, German, Russian, Italian, Finnish, Estonian, Polish, French
  • Inside/outside sauna room installation support
  • Optional smart heating setting
  • Displays set temperature and room temperature
  • Temperature sensor included
  • Door sensor included
  • Remotely located main control module
  • Connects to lights and ventilation
  • Overheat protection
  • Child safety lock
  • Control console dimensions: 2.2" W x 0.9" D x 4.1" H
  • Main control module dimensions: 3.5" W x 2.3" D x 5.6" H
  • Control display panel cable length: 9.8 ft
  • Control display panel cable gauge: AWG 22
  • Temperature sensor cable length: 16.4 ft
  • Temperature sensor cable gauge: AWG 24
  • Door sensor cable length: 16.4 ft
  • Door sensor cable gauge: AWG 24
  • Included: 9.0 kW sauna heater
  • Included: installation and operation manual (heater)
  • Heater warranty: 3-year limited residential warranty
  • Heater warranty: 1-year limited commercial warranty (excluding elements)
  • Included: UKU control console
  • Included: UKU main control module
  • Included: UKU temperature sensor
  • Included: UKU door sensor
  • Included: UKU control display panel cable
  • Included: UKU temperature sensor cable
  • Included: UKU door sensor cable
  • Included: installation and operation manual (UKU)
  • UKU warranty: 3-year limited residential warranty
  • UKU warranty: 1-year limited commercial warranty

Dimensions & Specifications

  • Model: STEEL 9.0STU Pkg
  • Heater power rating: 9 kW
  • Recommended sauna room size: 283–460 ft³
  • Heater dimensions (W x D x H): 12.6" x 12.6" x 38.4"
  • Heater weight: 33 lb
  • Shipping weight with sauna stones: 364 lb
  • Electrical (heater): 240 V
  • Single phase amperage: 37.5 A
  • Stone capacity: 330 lb
  • Included stones quantity: 330 lb
  • Stone type: olivine diabase
  • Stone size range: 1"–2" (3–5 cm)
  • UKU temperature range: 104–230°F
  • UKU control console dimensions: 2.2" W x 0.9" D x 4.1" H
  • UKU main module dimensions: 3.5" W x 2.3" D x 5.6" H
  • UKU display panel cable length: 9.8 ft
  • UKU display panel cable gauge: AWG 22
  • UKU temperature sensor cable length: 16.4 ft
  • UKU temperature sensor cable gauge: AWG 24
  • UKU door sensor cable length: 16.4 ft
  • UKU door sensor cable gauge: AWG 24
  • Warranty (heater): 3-year limited residential; 1-year limited commercial (excluding elements)
  • Warranty (UKU): 3-year limited residential; 1-year limited commercial

Why Choose HUUM?

If you want a modern electric sauna heater setup with the core components matched for compatibility, the STEEL 9.0STU Pkg delivers a coordinated system built around a 9 kW heater and a stone-forward design. The slim footprint and small safety distances help when space is limited, while the internal air tunnel supports faster heat-up and steady airflow for a consistent room temperature feel.
The included UKU control adds practical session management with adjustable temperature, timer settings, and delay start scheduling up to 48 hours ahead. Sensors and a separate main module support clean installation and everyday usability, and the option to add Wi-Fi functionality (configuration dependent) gives flexibility for owners who want remote control capability.
HUUM’s approach centers on stainless-steel construction, modern form factors, and system compatibility across heaters and controls—useful for builders and homeowners looking for a clean installation and a unified operating experience.

Shipping Details

Typical delivery time: Most Huum orders arrive within 10 business days. Actual timing can vary by destination, carrier scheduling, and product availability.

Order Processing

  • Order Verification: After you place an order, we confirm availability with Huum or an authorized distribution partner in our network.
  • Payment Authorization: Once availability is confirmed, your payment method is charged.
  • Order Placement: We then place the order with the supplier for fulfillment.
  • Order Cutoff Time: Orders placed after 2:00 PM CST may begin processing the next business day.

Shipping Rates and Delivery Timeline

  • Free Shipping: Shipping is FREE to the continental U.S. (lower 48 states).
  • Handling Time: 1 to 10 business days
  • Transit Time: 1 to 14 business days
  • Affirm Note: Orders paid through Affirm can delay shipping timelines by 5 to 7 days.

Shipment Confirmation and Tracking

  • You will receive a shipment confirmation email once your order ships with tracking details.
  • Tracking may take up to 24 hours to populate after the label is created.
  • The freight carrier may vary based on cost and service quality.
  • Most freight carriers attempt to contact you 1 to 2 days before delivery to schedule a drop-off time, but this is not guaranteed.

Delivery Options

Standard Delivery

  • Curbside delivery only. You are responsible for bringing the shipment inside.

Optional Upgrades

  • White Glove Service: Inside delivery to a room of your choice. Does not include unpacking, assembly, or installation. Adds 2 to 5 business days for scheduling and coordination.
  • Premium Installation Service: Inside delivery plus assembly and installation. May include electrical work depending on the product and site conditions. The base fee at checkout covers delivery and initial setup costs. Additional labor may be billed separately. Adds 2 to 5 business days for scheduling and coordination.

Pre Order and Special Order Items

  • If an item is pre order or out of stock, we will email or call to confirm you are comfortable with extended shipping times before your payment is processed.
  • Estimated timelines are estimates and may change due to production, freight, or carrier factors.
  • Outside the lower 48 states: We can often arrange shipping, but it is not part of our standard offering. Contact us for a custom quote.

Warranty Details

InHouse Wellness extends the HUUM manufacturer warranty to the original purchaser. Warranty coverage, terms, and remedies are set by HUUM. Any warranty claims should be communicated directly to HUUM.

Warranty Periods (from date of purchase)

Private / residential use

  • Electric sauna heaters: 3 years
  • Wood-burning heaters: 3 years
  • Control units/controllers: 3 years
  • Spare parts: 1 year

Commercial use

  • Electric sauna heaters: 1 year
  • Wood-burning heaters: 1 year
  • Control units/controllers: 1 year
  • Spare parts: 1 year

Commercial use definition: Includes business use, private use for commercial purposes, or private use exceeding 1,500 hours within a 12-month period.

What HUUM Covers

HUUM’s limited warranty covers defects in materials and workmanship under normal use during the applicable warranty period.

Requirements for Warranty Coverage (Key Points)

  • Inspect promptly upon receipt and report any shipping/delivery damage within 7 days (or the authorized dealer’s shorter timeframe, if applicable).
  • Products must be installed, connected, operated, and maintained according to HUUM manuals and all applicable local/national building, electrical, and fire-safety codes.
  • Electrical products must be installed/connected by a licensed electrician, and proof may be required.
  • The installed set must be complete as defined in HUUM documentation.
  • The purchase price must be fully paid by the end-user.

How to File a Warranty Claim

  • Notify HUUM without delay and no later than 30 days from discovering the defect or damage.
  • If a visible defect/damage is discovered after delivery, submit the claim (with photos) before installation.
  • Be prepared to provide:
  • Product name/model and serial/batch/product number (when available)
  • Description of the issue and photos (if possible)
  • Description of the environment and conditions where the product was used
  • Proof of purchase (invoice/receipt)
  • Claims must be submitted within the warranty period.

What’s Not Covered (Common Exclusions)

The limited warranty does not cover defects/damage not caused by HUUM, including:

  • Heating elements of electric heaters
  • HUUM accessories
  • Wood-burning stove door glass and ash grate
  • Sauna stones (all heaters)
  • Sensors for controllers
  • Normal wear and cosmetic defects
  • Damage from insufficient ventilation, constant humidity, corrosion/sooting/discoloration, or unsuitable storage/installation location
  • Transportation/storage damage (including incorrect storage conditions)
  • Failure to follow installation, use, or maintenance instructions
  • Incorrectly sized/unsuitable product selection for the application
  • Accidents, power surges, extreme weather, fires, earthquakes, or other “acts of God”
  • Unauthorized repairs/modifications, non-original parts, or incompatible products
  • Regular maintenance, cleaning, and periodic check-ups

The InHouse Wellness Difference

When you’re investing in premium wellness equipment, you want more than just a good deal—you want the right partner. Here’s why our customers trust us over anyone else:

  • Guaranteed Best Pricing – We work directly with manufacturers, so you never overpay. If you find a lower price, we don’t just match it—we beat it.
  • Unbeatable Shipping Times – Even if others claim faster delivery, we win. Your order ships either from our Austin, TX warehouse or straight from the manufacturer—fast, reliable, and trackable.
  • White Glove Delivery & Installation – We offer professional delivery, assembly, and installation so your new equipment is set up perfectly from day one.
  • U.S.-Based, Real Support – Our team is right here in the USA, ready to help by phone, text, or email—before, during, and long after your purchase.
  • Since 2011 – Over a decade of helping health and wellness consumers connect with top brands and the perfect products for their needs.
  • Factory Warranties Included – Full manufacturer coverage on every product, plus our help if you ever need to file a claim.
  • Exclusive Video & eBook Guides – From maintenance tips to usage tutorials, we give you the knowledge to get the most from your investment.

Bottom line: We don’t just sell equipment—we deliver the fastest shipping, the most reliable support, and the kind of buying experience you’ll tell your friends about.

THEM
Lifetime Customer Support
Talk to real people by phone, text or chat before or after your order
After-sale support is slow or unavailable
Best Price Promise
Transparent pricing with no hidden fees - guaranteed lowest price
Inflated prices with surprise charges
Fast & Free Shipping
Nationwide delivery with real-time tracking included
Long delays and added delivery fees
Premium Brand Selection
Handpicked, top-rated wellness products that meet our strict standards
No vetting — anything goes
Expert Wellness Guides
Access video tutorials & insider tips to get the most from your setup
You're left figuring it out alone

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