1. What size sauna is the HUUM STEEL 6kW best for?

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2. What electrical service does the HUUM STEEL 6kW require?

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3. Does the HUUM STEEL 6kW include controls?

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5. Does the HUUM STEEL 6kW include free shipping, and when can I expect to receive it?

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7. Can I control the heater from my phone?

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HUUM STEEL 6 kW 240V Electric Sauna Heater - Complete Package Options - NW Immersion

HUUM STEEL 6kW Electric Sauna Heater

Name: HUUM STEEL 6kW Electric Sauna Heater
Brand: HUUM
SKU: H1006012
Price: 2033.0 USD
Availability: InStock

$2,033.00 $2,599.00 SAVE $566.00

SKU: H1006012 By HUUM

Authorized Dealer – Full Warranty Included

Slim Design. Deep Heat. Beautiful Steam.

The HUUM STEEL 6kW Electric Sauna Heater is a premium floor-standing sauna heater designed for compact to mid-size traditional saunas. With its slim stainless steel profile, small safety distances, built-in air tunnel, and impressive 330 lb sauna stone capacity, the STEEL 6kW delivers soft, long-lasting steam in a clean architectural form.

Best for sauna rooms approximately 177–318 cubic feet. Requires a 240V / 30A dedicated circuit. Glass, tile, stone, and other cold surfaces may require sizing up. Always confirm final wiring with a licensed electrician.

✓ Designed for Sauna Rooms Approx. 177–318 cu. ft.
✓ Requires 240V / 30A Dedicated Circuit
✓ Large 330 lb Stone Capacity for Soft Steam
✓ Slim Stainless Steel Design for Compact Saunas
✓ Compatible with HUUM UKU WiFi Controls

Build Your Complete HUUM Heater Package

The HUUM STEEL heater requires a compatible HUUM UKU control system and sauna stones for operation. Select the required items below to complete your heater package, or add optional accessories to further customize your installation.

Sauna Stones (Required for Operation)

Add the required 10 boxes / 330 lb of HUUM STONES 12 (1–2 inch) here, or leave unselected if you already have compatible stones.

View details

HUUM UKU Control System — Required for Operation

Required to operate your HUUM heater, with precise temperature control and optional WiFi app access depending on the UKU model selected.

View details

Optional Accessories

Choose an optional accessory for your heater.

View details

1

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Talk With a Sauna Specialist

Our team helps customers nationwide with sauna selection, site preparation, delivery planning, and installation guidance.

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Product Overview

A Compact HUUM Heater with a Serious Stone Capacity

The HUUM STEEL 6kW is designed for sauna owners who want a heater that looks refined, saves space, and creates a softer steam experience than many traditional metal-box heaters. Its tall, narrow floor-standing profile allows it to fit beautifully into compact sauna rooms, while the open stainless steel design showcases the natural sauna stones for a sculptural, modern look.

What makes the STEEL series especially compelling is its combination of compact safety distances and large thermal mass. The STEEL 6kW holds approximately 330 lbs of sauna stones, which helps create gentler heat, softer steam, and a more satisfying löyly when water is poured over the stones.

Inside the heater, HUUM’s built-in air tunnel supports effective airflow and faster heating, allowing the heater to perform efficiently despite its slim footprint. HUUM describes the STEEL as a compact heater designed for modern sauna rooms, with small safety distances, quick heating, and gentle long-lasting steam.

The STEEL 6kW is an excellent choice for compact and mid-size sauna rooms where design matters, space is limited, and the goal is a beautiful, authentic sauna experience with the convenience of electric heat.

Why You'll Love it!

Sized for Compact to Mid-Size Saunas

The HUUM STEEL 6kW is designed for sauna rooms approximately 177–318 cubic feet, making it a strong fit for many residential indoor saunas, small outdoor saunas, garage saunas, and compact wellness spaces.

Clear Electrical Requirements

This heater requires a 240V / 30A dedicated circuit and professional installation by a licensed electrician. Including this information upfront helps customers quickly understand whether the STEEL 6kW is the right fit for their sauna project.

Soft, Long-Lasting Steam

With approximately 330 lbs of sauna stones, the STEEL 6kW provides significant thermal mass for gentler heat, softer steam, and longer-lasting löyly compared with lower-stone-capacity heaters.

Slim Floor-Standing Design

The tall, narrow stainless steel profile is ideal for compact sauna layouts where every inch matters. Its clean architectural shape also makes it a beautiful focal point inside the sauna.

Small Safety Distances

The STEEL series is designed with small safety distances, making it easier to place in compact sauna rooms where a larger heater may be difficult to fit.

Built-In Air Tunnel

The internal air tunnel supports effective airflow and quick heating, helping the sauna warm efficiently while protecting the heating elements.

UKU Control Compatibility

Pair the STEEL 6kW with a HUUM UKU control system for simple temperature control, scheduling, and optional WiFi app control from your phone.

What’s Included

HUUM STEEL 6kW Electric Sauna Heater
Adjustable legs
Installation and operation manual
Manufacturer warranty

Specifications

General

Brand: HUUM

Model: STEEL 6

Heater Type: Electric Sauna Heater

Mounting Style: Floor-Standing

Power Rating: 6kW

Country of Origin: Estonia

Recommended Use: Compact to mid-size traditional sauna rooms

Sauna Room Sizing

Recommended Sauna Room Size: 5–9 m³

Approximate Cubic Feet Range: 177–318 cu. ft.

Important Sizing Note: Glass, tile, stone, brick, log walls, and other cold surfaces can increase the adjusted room volume. When in doubt, contact NW Immersion for sizing help before purchase.

Electrical

Supply Voltage: 240V

Connection: 240V single phase

Required Circuit: 30A dedicated circuit

Recommended Power Cable: 10 AWG

Professional Installation: Required by a licensed electrician

Stone Capacity

Stone Capacity: 150 kg / approx. 330 lbs

Stone Diameter: 3–5 cm / 1.2–2"

Stones Required: Sold separately unless included in a package

Dimensions & Weight

Height: 38.4"

Width: 12.6"

Depth: 12.6"

Heater Weight: 33 lbs

Controls

Control Compatibility: HUUM UKU Control System

Control Options: UKU Local, UKU WiFi, UKU Glass, UKU Wood, UKU Mirror depending on configuration

Mobile App Control: Available with compatible UKU WiFi control system

Installation Notes

Floor-standing installation
Designed for compact safety distances- see manual under Resources & Guides for details
Safety railing strongly recommended
May be embedded into a sauna bench with proper HUUM embedding flange
Follow all HUUM installation manual clearances and electrical requirements
Final wiring must be completed by a licensed electrician

Resources & Guides

Plan your HUUM STEEL installation with helpful manufacturer resources, including heater manuals, UKU control documentation, main module instructions, wiring diagrams, specification sheets, and installation videos.

Before installation, we recommend sharing these resources with your licensed electrician and sauna installer so they can review heater placement, electrical requirements, control setup, stone loading, safety clearances, and installation requirements in advance.

Always follow the official HUUM installation manuals, local electrical code, and guidance from your licensed electrician. NW Immersion is also here to help with heater sizing, package selection, and general installation planning before your order ships.

Click Here for the HUUM Steel Installation & Owner's Manual

HUUM Steel Spec Diagram

HUUM Stone Requirements

Elements Required

Huum warranty

Size Your Sauna

Click Here for the HUUM UKU Control Installation & Owner's Manual

Click Here for Video on Installing the UKU Main Module

Click Here for Video on the UKU Control Installation

Click Here for Video on how to connect the UKU Control to WiFi

Shipping & Delivery

Free Shipping: This order qualifies for free shipping within the contiguous United States.
Processing Time: In-stock items typically leave the warehouse within 1–3 business days. This is the processing period before transit, not the final delivery time.
Confirm Availability: Inventory can change quickly. Please call, text, or email NW Immersion before ordering if you need confirmation of current stock or have a specific delivery deadline.
Multiple Packages: The heater, sauna stones, controls, and accessories may ship in separate boxes or on separate pallets. Packages may arrive on different days.
Tracking: Tracking information will be emailed for each shipment as soon as it leaves the warehouse.
Inspect Upon Arrival: Check every package for visible damage before accepting delivery. Photograph any damage and contact NW Immersion promptly so we can assist.

Questions about availability, delivery, heater sizing, controls, or installation requirements? Our U.S.-based sauna specialists are available by phone, text, or email.

Warranty

Click Here for the HUUM Manufacturer Warranty

HUUM Manufacturer Warranty

Backed by HUUM’s manufacturer warranty when installed and used according to HUUM’s official instructions.

Warranty coverage may vary by component, installation type, use environment, maintenance, chimney connection, and fuel use. Sauna stones, chimney components, and accessories may each carry their own warranty terms.

As an Authorized HUUM Dealer, NW Immersion is here to help with stove sizing, product selection, delivery coordination, troubleshooting, warranty guidance, and long-term support.

Always refer to the official HUUM warranty documentation included with your stove for complete terms and final coverage details.

Frequently Asked Questions

The HUUM STEEL 6kW is best for sauna rooms approximately 177–318 cubic feet. Glass, tile, stone, brick, and other cold surfaces can increase the adjusted room volume, so sizing should always be confirmed before purchase.

The STEEL 6kW requires a 240V / 30A dedicated circuit and should be installed by a licensed electrician according to the official HUUM installation manual and local code.

No. The STEEL 6kW requires a compatible HUUM UKU control system, which is selected separately unless purchased as part of a complete heater package.

No. Sauna stones are required and are selected separately unless included in a heater package. The STEEL 6kW requires approximately 330 lbs of sauna stones.

Yes. The HUUM STEEL 6kW Electric Sauna Heater qualifies for free shipping and typically ships from the warehouse within 1–3 business days when in stock. Once your order ships, tracking information will be provided.

For most accurate delivery timing estimate please call, text, or email and we can provide current in stock status.

If sauna stones, controls, or accessories are ordered with the heater, those items may ship separately and may be boxed or palletized separately for safe delivery but will still ship for free.

The STEEL combines a slim stainless steel profile, small safety distances, large stone capacity, built-in air tunnel, and HUUM UKU control compatibility. This makes it a strong choice for compact saunas where design, performance, and steam quality all matter.

Yes, when paired with a compatible HUUM UKU WiFi control system, you can control and preheat your sauna from your phone using the HUUM mobile app.

Yes. The STEEL 6kW is designed for traditional sauna use, and water may be ladled over the hot sauna stones to create steam, also known as löyly.

A safety railing may be required depending on your sauna layout and local installation requirements. Because the heater becomes extremely hot during use, a safety railing is strongly recommended for comfort and protection.

Yes. The HUUM STEEL can be embedded into a sauna bench when installed with the proper HUUM embedding flange and required clearances. Always follow the official installation manual.

HUUM STEEL 6kW Electric Sauna Heater

Checkout as guest

Select Gale at Checkout

Pay with HSA/FSA or credit card

Authorized Dealer – Full Warranty Included

Slim Design. Deep Heat. Beautiful Steam.

Build Your Complete HUUM Heater Package

Maximize your savings. Pay with HSA or FSA.

Purchase with Confidence

Talk With a Sauna Specialist

A Compact HUUM Heater with a Serious Stone Capacity

Sized for Compact to Mid-Size Saunas

Clear Electrical Requirements

Soft, Long-Lasting Steam

Slim Floor-Standing Design

Small Safety Distances

Built-In Air Tunnel

UKU Control Compatibility

General

Sauna Room Sizing

Electrical

Stone Capacity

Dimensions & Weight

Controls

Installation Notes

HUUM Manufacturer Warranty

Frequently Asked Questions

1. What size sauna is the HUUM STEEL 6kW best for?

2. What electrical service does the HUUM STEEL 6kW require?

3. Does the HUUM STEEL 6kW include controls?

4. Does it include sauna stones?

5. Does the HUUM STEEL 6kW include free shipping, and when can I expect to receive it?

6. What makes the HUUM STEEL different from other electric sauna heaters?

7. Can I control the heater from my phone?

8. Can I pour water over the stones?

9. Is a safety railing required?

10. Can the HUUM STEEL be installed into a bench?

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