HUUM

HUUM STEEL Mini 4 - 3.5kW Sauna Heater

Name: HUUM STEEL Mini 4 - 3.5kW Sauna Heater
Brand: HUUM
SKU: H1007012
Price: 1726.00 USD
Availability: InStock

$1,726.00

Free Shipping

HUUM Warranty Included

Overview
Features
Dimensions
Description

Overview

The HUUM STEEL Mini 4 (3.5kW) is a compact, wall-mounted sauna heater designed for small sauna rooms. Featuring exceptionally short safety distances and a larger-than-average stone capacity for its size, it delivers smooth, consistent heat and enhanced steam—perfect for space-conscious sauna installations.

Note: Not sure which method applies to your sauna? We’re happy to help. Send us (support@homespadirect.com) your sauna dimensions and materials, and we’ll confirm the right heater size for you.

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)

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)

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)

Dimensions

Width	12.6"W (320mm)
Depth	6"D (150mm)
Height	38.4"H (975mm)

Description

Designed for compact sauna spaces where efficiency and safety are essential, the HUUM STEEL Mini 4 (3.5kW) combines elegant design with impressive performance. This wall-mounted electric sauna heater features exceptionally short safety distances, making it an ideal solution for smaller sauna rooms ranging from 106 to 177 cubic feet.

Despite its compact size, the STEEL Mini stands out with a larger stone capacity than most heaters in its power class. This thoughtful engineering allows the heater to produce a more consistent, even heat while supporting greater steam output—resulting in a smoother, more comfortable sauna experience. The efficient stone layout helps maintain stable temperatures and enhances overall heat quality during each session.

With its clean, modern aesthetic and space-saving profile, the STEEL Mini integrates seamlessly into contemporary sauna interiors while maximizing usable room space. Designed for both performance and practicality, it delivers reliable heat in environments where clearance and efficiency matter most.

The HUUM STEEL Mini 4 is a refined, high-performing choice for small saunas seeking premium heat quality in a compact form.

FAQs

Do you ship internationally?

No. We currently ship to addresses within the United States only.

How much does shipping cost?

Shipping is free on all orders. There are no hidden fees or surprise charges at checkout.

How long will it take to receive my order?

Orders are processed within 1–2 business days (Monday–Friday). Transit time is typically 5–7 business days, for a total estimated delivery time of 6–9 business days.

How do I track my order?

Once your order ships, you’ll receive an email with a tracking link. You can also track your order here:
•Track your order

•Or enter your tracking number on the carrier’s official website

Can I return an item?

Yes. Returns are accepted within 14 calendar days of delivery if the item is: