HUUM is famous for its minimalist, designer sauna heaters—and two of their most space-efficient models are the HUUM CLIFF and HUUM STEEL. Both offer fast heat-up times, high stone capacity, and full WiFi control—but they differ in footprint, capacity, and visual feel.
In this guide, we’ll compare the CLIFF and STEEL so you can choose the right heater for your sauna layout, room size, and performance goals.
The HUUM CLIFF is a slim, floor-mounted electric heater designed to take up minimal space. With extremely short safety clearances, it’s ideal for tight saunas where wall and bench space are limited. Despite its compact base, it holds a generous 165 lbs of stones and produces soft, balanced steam.
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Mounting: Floor-mounted
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Power: 6kW / 9kW / 10.5kW
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Room Size: 176–600 cu. ft.
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Stone Capacity: 165 lbs
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Controls: Includes UKU WiFi Controller + App
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Clearance: One of the smallest required safety distances of any heater
→ View HUUM CLIFF
The HUUM STEEL is a vertical floor-mounted sauna heater that blends sleek aesthetics with soft steam output. It uses a wraparound stainless steel design that complements modern saunas and holds up to 330 lbs of stones—perfect for smaller spaces without sacrificing steam quality.
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Mounting: Wall-mounted
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Power: 6kW / 9kW / 10.5kW
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Room Size: 176–600 cu. ft.
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Stone Capacity: 330 lbs
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Controls: Includes UKU WiFi Controller + App
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Look: Clean vertical stainless lines, ideal for light or modern sauna interiors
→ View HUUM STEEL
CLIFF vs STEEL: Side-by-Side Summary
| Feature |
HUUM CLIFF |
HUUM STEEL |
| Mounting Type |
Floor-mounted |
Wall-mounted |
| Room Size Range |
176–600 cu. ft. |
176–600 cu. ft. |
| Stone Capacity |
165 lbs |
330 lbs |
| Clearance Required |
Very minimal |
Moderate |
| Controls |
UKU WiFi Included |
UKU WiFi Included |
| Visual Style |
Minimal vertical grille, floor unit |
Wraparound stainless cage |
Which HUUM Heater Is Right for You?
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Choose HUUM CLIFF if you need floor installation, extra stone capacity, or have limited safety clearances in a tight space.
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Choose HUUM STEEL if you want a floor-mounted heater with sleek aesthetics and quality steam for a mid-size sauna.
Both heaters come with HUUM’s smart UKU WiFi Controller and offer full app scheduling, lighting controls, and preset settings—perfect for modern sauna builds.
Use our Sauna Heater Size Calculator for tailored recommendations.
Note: These heaters are imported from Estonia and could be affected by upcoming tariffs. Buy now to secure U.S. stock at current pricing.
→ Browse All HUUM Heaters
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