Sauna Company USA · Sauna Heaters
HUUM CLIFF
The HUUM CLIFF is a slim, vertical wall-mounted heater with a distinctive rectangular stone column silhouette. Available in 3.5 to 11 kW, the CLIFF series fits 1-person cabins through large 6-person rooms. Every package includes the heater, UKU digital control, and a full stone load.
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Specifications & Details
Specifications
Available Models & kW Output:
- CLIFF Mini 4STU — 4 kW, wall-mount, up to 141 cu ft
- CLIFF 6STU — 6 kW, floor-standing, 170–280 cu ft
- CLIFF 9STU — 9 kW, floor-standing, 283–460 cu ft
- CLIFF 11STU — 11 kW, floor-standing, 354–566 cu ft
All models: 240V single-phase · UKU control included · Olivine diabase stones included · Made in Estonia
What's Included
- HUUM CLIFF Sauna Heater (your selected kW)
- UKU Local Black Digital Control Console
- Main Control Module
- Temperature Sensor + Door Sensor
- Sauna Stones — full load for your model
- All required cables and hardware
- Installation & Operation Manual
- 3-Year Limited Residential Warranty (elements excluded)
Compatibility & Sizing
Size your heater at roughly 1 kW per 45 cubic feet of insulated sauna room. Outdoor saunas, rooms with large glass panels, or poorly insulated spaces may require the next size up.
The CLIFF works with all major traditional sauna rooms including SaunaLife, Dundalk LeisureCraft, ThermaSol, and Finnmark barrel, cube, and cabin models — select the kW that matches your interior cubic footage.
Shipping & Warranty
Shipping: Ships via freight carrier with curbside delivery to the contiguous U.S. Most orders dispatch within a few business days of purchase.
Warranty: 3-year limited residential / 1-year limited commercial (heating elements excluded). Backed by Sauna Company USA customer support.
Title
Have questions about which size is right for your sauna? Use the heater sizing guide on our heaters page or contact us — we're happy to help you choose.
Sauna Company USA
The Tower That Heats.
A Premium Heater, With 4 Sizes Available.
Sauna Company USA
The Tower That Heats.
A Premium Heater, With 4 Sizes Available.
5-Year Warranty
HUUM CLIFF Heater Package
Overview
The HUUM DROP 9STU Pkg is a complete sauna heater package — the award-winning DROP 9.0kW wall-mounted heater, UKU Local Black control, and a full stone load, all in one box. Everything you need to transform your sauna into a genuine ritual space, sized for rooms from 283 to 460 cubic feet.
- 9.0 kW wall-mounted electric sauna heater
- 122 lb stone capacity with direct stone-to-element contact
- Operates on 240V single-phase
- Includes UKU Local Black digital control — upgrade to WiFi available separately
Key Features
DROP 9.0kW Sauna Heater
- Iconic water-drop silhouette — Red Dot Award winner
- Wall-mounted with included bracket
- 122 lb stone capacity (4 boxes included)
- Direct contact between stones and heating elements
- More exposed stones create a longer, milder heat
- Stainless steel construction
- Works with all UKU controls
UKU Local Black Control (Included)
- Digital LED display — time, temperature, on/off
- Black console + main module + temperature sensor + door sensor
- Upgrade to UKU WiFi to preheat from anywhere
Sauna Stones (Included)
- 4 boxes — full load (~120 lbs) for immediate use
Certification
- SGS listed
About HUUM CLIFF
Column-style heating, the Nordic way
HUUM designs and builds its sauna heaters in Estonia, combining clean Nordic form with serious engineering. The CLIFF is their floor-standing column heater — tall, slim, and quietly powerful. Its internal air duct accelerates heat distribution, while the large exposed stone load creates the long, gentle heat waves that define a proper Finnish sauna session.
Unlike wall-mount heaters, the CLIFF stands free with minimal clearance requirements, making it a natural fit for traditional sauna rooms of all sizes. It's built from stainless steel throughout, uses industrial-grade heating elements, and pairs with the UKU control suite for precise temperature and timer management.
Resources
Documents & Manuals
Installation & User Manual
Watch & learn
Installation Guide
Follow along with this step-by-step installation and assembly walkthrough so you know exactly what to expect. Our team is one message away if you need a hand.
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