HUUM STEEL 3.5

$2,958.00

STEEL Mini Series 3.5kW Sauna Heater Package

This HUUM Steel Mini sauna heater package comes complete with the traditionally designed STEEL Mini 3.5kW sauna heater, UKU control (WiFi optional), and sauna stones - everything you need to build your dream sauna experience. The package has been combined for use in sauna rooms from 106 to 177 cubic feet (CF).

Now available through Sauna Friend Sanctuary Supply, your private wellness association.

Specs - DOWNLOAD SPEC SHEET


Kilowatt Rating	3.5 kW
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 (320 mm)
Depth	6" D (150 mm)
Height	38.4" H (975 mm)
Minimum Temperature Setting	104°F
Maximum Temperature Setting	230°F
UKU Shipping Weight	20 lbs
Console Width	2.2" (55 mm)
Console Depth	0.9" (22 mm)
Console Height	4.1" (105 mm)
Main Module Width	3.5" (90 mm)
Main Module Depth	2.3" (58 mm)
Main Module Height	5.6" (142 mm)
Display Panel Cable Length	9.8 ft
Display Panel Cable AWG	22
Temp Sensor Cable Length	16.4 ft
Temp Sensor Cable AWG	24
Door Sensor Cable Length	16.4 ft
Door Sensor Cable AWG	24

Let Us Help You Decide

Because freight, site access, and heater selection can be complex, we recommend connecting with us before purchasing. As a private wellness association, Sauna Friend offers concierge style support from first questions to first sweat.

Call 1-888-471-4325 Live Chat support@saunafriend.com

Available exclusively to members of Bioharmony Collective and Sanctuary Supply.

More information

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)

What's included?

What’s Included

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

Why Choose Sauna Life from Sauna Friend?

Most online dealers just drop a sauna at your curb. We walk with you through the whole journey.

White glove support in select regions, Denver and Kansas City
Lifetime wellness perks, including access to our Qigong and Taichi courses
Private member experience, you are not just a buyer, you are part of a community
Trusted guidance from sauna industry veterans, not salespeople

Installation Support & Downloads

Available white glove delivery and setup in the greater Denver and Kansas City areas. Outside those regions, we can walk you or your contractor through the install and help you choose the right heater and controls for your space.

Downloads:
Heater Installation Guide
UKU Installation Guide
Element Requirements

Warranty

SaunaLife stands behind its craftsmanship with one of the strongest warranties in the industry. Every sauna is protected by a lifetime warranty on the sauna room’s structural integrity and a 5-year warranty on components, ensuring long-term performance and peace of mind. Thermo-treated Nordic spruce resists warping, cracking, and decay far better than untreated softwoods—meaning your sauna stays solid, stable, and beautiful for decades.

HUUM STEEL 3.5

$2,958.00