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CEDAR SENSE

HUUM STEEL Mini 4 | Electric Sauna Heater | UKU Controller | 106′ to 177′ Cu ft

4.9/5

Original price was: $2,400.00.Current price is: $1,976.00.
You save (%)

or from $786/mo with Affirm & Klarna

Hand-built from Grade A Knotty Western Red Cedar in Northern Minnesota.
Delivered fully assembled with our Premium Accessory Kit included.

UKU Classic Local

Control Panels

None Black +$800.00 Sand +$1,010.00 White +$1,010.00 Wood +$1,100.00
UKU Classic Wi-Fi

Control Panels

None Black +$1,240.00 Sand +$1,450.00 White +$1,450.00 Wood +$1,530.00
UKU Glass Wi-Fi

Control Panels

None Black +$1,720.00 Mirror +$1,840.00 Gold +$2,170.00
Rocks
No Rocks #4Boxes of HUUM Rocks +$220.00

Handcrafted to order — ships in 8–10 weeks

SECURE CHECKOUT

SHIPPING BY LOCATION

30-DAY RETURNS

PRODUCT DESCRIPTION

REQUIRED a Control Panel 

MODEL6 Person Barrel Sauna with Front Porch
EXTERIOR DIMENSIONS10′ L × 6′ W × 7′ H
INTERIOR LENGTH7′ (Front Porch: 3′)
WOODGrade A Knotty Western Red Cedar
STANDARD HEATERExternal Wood Fired Stove
CAPACITYUp to 6 adults
SHIPPING WEIGHT~1,200 lbs
ASSEMBLYDelivered fully assembled
WARRANTYLifetime craftsmanship guarantee

Each sauna is built to order in our Northern Minnesota workshop with an 8–10 week production lead time. Saunas ship fully assembled via dedicated white-glove freight, scheduled in advance by our logistics team.

Shipping is priced by destination — your final freight quote is confirmed at checkout based on delivery location.

Return any sauna within 30 days of delivery for a full refund, less return freight. Damage in transit is covered in full — simply notify us within 48 hours.

Description

STEEL Series Mini 4kW Sauna Heater

The compact HUUM STEEL Mini 3.5 kW sauna heater, with exceptionally short safety distances, is a wall-mounted model that is engineered for smaller sauna rooms.

The STEEL Mini sauna heater is designed for sauna spaces from 106 to 177 cubic feet (CF).


STEEL Mini 4 Features

  • 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)

The STEEL Mini 4 Includes

  • 3.5kW Sauna Heater
  • Wall Fastening Bracket
  • Installation and Operation Manual
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

STEEL Mini 4 Specifications

 

Model

STEEL Mini 3.5

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)


STEEL Mini 4 Installation and Operational Manual

HUUM STEEL Sauna Heater Installation Guide – CLICK HERE

STEEL Mini 4 Certification

HUUM STEEL Cert of Compliance – CLICK HERE

Stone Requirements

HUUM STEEL Stone Requirements – CLICK HERE

HUUM Heater Elements

HUUM STEEL Element Requirements – CLICK HERE

Size Your Sauna

HUUM STEEL Size Your Sauna – CLICK HERE

HUMM Warranty

HUUM STEEL Warranty – CLICK HERE


SHIPPING

The weight or packaging of this product requires delivery by special appointment, and on a wooden pallet.  You will get a call days before delivery to set up ETA. 

Usually within 1-2 weeks of purchase.

The driver is responsible for curbside delivery “only” and will lower the items to ground level. 

Prior to shipping this product, we contact customers to share shipment details and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses. 

Our goal is to ensure your project’s success.


STEEL Control Panels

The UKU sauna control system is a great way to heat up your sauna with modern technology.

You can control it from the local sauna control panel or the HUUM mobile app.

UKU Classic – Local

sauna control panel

 

Learn more about the UKU local by CLICKING HERE

UKU Classic – Wifi

 

Learn more about the UKU Wi-Fi by CLICKING HERE

UKU Glass

 

Learn more about the UKU glass by CLICKING HERE

UKU Glass Surface Mount

This surface mount will helps attach the UKU Glass to any surface.

CLICK HERE to learn more about it.


HUUM Sauna Rocks

HUUM Drop takes 132lbs of sauna rocks

Product range of HUUM includes round sauna stones with a diameter of 5–10 cm / 2-4 in.

Olivine diabase sauna stones are enduring and their thermal capacity is high.

It’s recommended to use round sauna stones in HUUM sauna heaters. Round stones complement the design of the heaters and provide milder steam.

Why Use Our Rocks?

You can find your own stones but make sure you’re using the correct ones. 

This video can help explain.


HUUM app enables one to heat the sauna from a smartphone

HUUM HIVE Mini smart app

HUUM mobile app allows you to heat the sauna from your phone, wherever you are.

It doesn’t matter whether you are heading home from the office, finishing your evening jog or simply wish to have an unplanned rewarding sauna evening with your friends – just a few clicks on the smartphone, and a hot sauna awaits you!


Soft steam that resembles the traditional sauna

The amount of metal used in HUUM sauna heaters is very small – this ensures that majority of the heat derives from the stones, and not from the metal.

This maximizes the proportion of beneficial negative ions in the air, which is also high in the traditional wood-heated sauna.

This and the exceptionally large quantity of sauna rocks are the secret ingredients of the curative, gentle and long-lasting steam of our sauna heaters.

Learn more:
What happens to our body in and after the sauna


Have a Question About Our Heater?  Let us know.

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Thank you for your response. ✨

Additional information

Weight40 lbs
Dimensions12 × 12 × 42 in
MODEL

DROP 4.5, DROP 6, DROP 7.5, DROP 9

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10-Year Structural Warranty 5,000+ Happy Sauna Owners Expert Installation Available Handcrafted in North America Free Shipping on Orders 10-Year Structural Warranty 5,000+ Happy Sauna Owners Expert Installation Available Handcrafted in North America Free Shipping on Orders

CEDAR SENSE

From workshop to first session.

STEP 1

Custom Order

Configure your build; we begin
production once your order is confirmed.

STEP 2

Handcrafted in Minnesota

Built by hand from Grade A Knotty
Western Red Cedar in our Northern
Minnesota workshop.

STEP 3

Fully Assembled Delivery

Arrives complete on a dedicated freight
truck — no flat-pack, no assembly.

STEP 4

Ready to Heat

Position, connect your wood-fired stove,
and step inside.

CUSTOMER REVIEWS

What Owners Are Saying

No reviews yet for this product.

★★★★★

A nightly ritual we never skip.

The cedar smell hits the moment you open the door. Heat is even, the door seals tight, and the build feels like it will last decades. Worth every dollar.

★★★★★

Genuinely flawless craftsmanship.

Pre-drilled holes lined up perfectly, hardware was stainless and substantial, and the heater was already wired. Two of us assembled it in a weekend.

★★★★★

Centerpiece of our backyard.

Guests at our rental mention the sauna in nearly every review. The barrel shape sheds snow beautifully and the interior light is so warm.

DAILY PRACTICE

The power of heat.

A consistent sauna practice compounds quietly into a measurable health investment. Regular heat exposure is linked to gains in cardiovascular conditioning, muscle recovery, and resilience to stress — benefits that build session after session.

30 min

A single sauna session can elevate heart rate to levels comparable to moderate exercise, supporting cardiovascular conditioning.

2–3×

Regular sauna use of two to three sessions per week is associated with measurable improvements in cardiovascular health in long-term studies.

20 min

Twenty minutes of heat helps relax muscles, accelerate recovery, and lower perceived stress after a long day.

ANATOMY OF THE SAUNA

Every surface, every fastener — chosen on purpose.

Grade A Knotty Western Red Cedar, an external wood-fired stove as standard (Harvia electric available as an upgrade), and marine-grade stainless steel hardware. Each component is selected for how it behaves under heat and steam, then handcrafted and fully assembled in Northern Minnesota.

OUR WORK

Real projects.

From private gardens to commercial recovery suites, every Cedar Sense build is shaped to its setting. A look at saunas we’ve delivered for owners across North America.

Frequently Asked Questions

Cedar Sense helps you design and build the sauna setup that actually fits your space, budget, and lifestyle. Here are answers to the questions we get asked the most.

What types of saunas does Cedar Sense offer?

We offer outdoor barrel saunas, indoor saunas, and custom-built sauna rooms, as well as complimentary amenities like cold plunges, outdoor showers, wood-fired hot tubs, and cedar outdoor furniture. Our goal is to help you create a complete fire-and-ice experience at home or at your cabin.

Yes. We created a FREE Custom Sauna Build Guide and a simple design flow to help you plan location, layout, bench height, heating system, and ventilation before you start building.

Yes. We ship saunas, cold plunges, outdoor showers, and most cedar products across the continental United States. Shipping options and costs depend on the product and your location, which you’ll see at checkout or by requesting a quote.

For many areas in the upper Midwest, we can either provide installation/assembly options or connect you with trusted partners. In other regions, most of our saunas arrive as kits designed for a handy homeowner or local contractor. Contact us to discuss installation options in your area.

Wood-fired stoves give you a traditional, off-grid feel with a softer, “campfire” style heat and crackling ambiance. Electric stoves are cleaner, easier to control, and often available with Wi-Fi and timers. Your ideal choice usually comes down to power availability, local codes, and the sauna experience you prefer.

Lead times vary by model and season, but most saunas ship within a few weeks to a couple of months. Custom builds and special configurations may take a bit longer. We’ll provide an estimated timeline before you finalize your order.

Absolutely. We carry sauna buckets and ladles, thermometers, sand timers, essential oils, sauna sprays, flooring, clocks, and more. We also offer cold tubs, outdoor showers, and cedar furniture that pair perfectly with your sauna setup so you can create a complete backyard retreat.

Yes. The guide is 100% free. You’ll just enter your name and email so we can send you the PDF and follow up with helpful tips about planning your build. No obligation and no pressure to purchase.

GET IN TOUCH

Ready to Get Your Barrel Sauna?

Fill out the form and we’ll get back to you with answers, pricing, availability, or any help you need. We’re here to make your sauna dream a reality.

PHONE

218-760-2041

ADDRESS

1111 1st St, Waubun, MN 56589

We respect your privacy. We never spam or sell your information. Your details are used only to respond to your inquiry.

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