HUUM CLIFF 6kW Electric Sauna Heater | Floor-Standing | 177–318 cu. ft.
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- Full Manufacturer Warranty Included — 3-Year Residential
- SGS-Listed Sauna Heater
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- Free Freight Shipping to the Contiguous U.S.
HUUM CLIFF 6kW Electric Sauna Heater — Floor-Standing
Slim Vertical Floor-Standing Sauna Heater for Rooms 177–318 cu ft | 165 lb Stone Capacity | Made in Estonia
The HUUM CLIFF 6kW is a floor-standing electric sauna heater designed for residential sauna rooms from 177 to 318 cubic feet. Its slim, vertical profile is engineered for space-efficient installation with reduced safety clearance requirements — making it an excellent choice for saunas where a traditional wider heater won’t fit.
Manufactured in Estonia from stainless steel, the CLIFF features an internal air duct design for efficient heat distribution, removable ribs for optimized stone placement, and direct contact between heating elements and stones. A compatible HUUM UKU control system and sauna stones are required for operation and are sold separately.
Who This Is For
The HUUM CLIFF 6kW is the entry-level floor-standing model in the CLIFF Series — ideal for homeowners and sauna builders who want a slim, space-efficient floor heater for a small to mid-sized sauna room. It covers the same room size range as the DROP 6kW but with a larger stone capacity and floor-standing installation.
Key Features
- 6kW floor-standing electric output — designed for sauna rooms 177–318 cu ft
- Slim vertical design — reduced safety clearance requirements vs. traditional heaters
- ~165 lb stone capacity for consistent heat retention and steam (löyly)
- Internal air duct design for efficient heat distribution
- Removable ribs for optimized stone placement
- Direct contact between heating elements and stones
- Stainless steel construction
- Compatible with HUUM UKU Wi-Fi Sauna Control (sold separately)
- SGS listed — meets U.S. safety standards
- 3-year residential warranty / 1-year commercial warranty
- Designed, engineered, and manufactured in Estonia
Specifications
- Model: CLIFF 6
- SKU: H1004012
- Series: CLIFF Series
- Power Output: 6kW
- Voltage: 240V, Single Phase
- Amperage: 25A
- Room Size: 177–318 cu ft
- Stone Capacity: ~165 lbs
- Width: 10.6”
- Depth: 10.6”
- Height: 38.4”
- Heater Weight: 35.2 lbs
- Shipping Weight (with stones): 200 lbs
- Country of Origin: Estonia
Required Components Sold Separately
- Sauna Control (required): HUUM UKU Wi-Fi Sauna Control
- Sauna Stones (required): ~165 lbs (5 boxes) — HUUM Sauna Heater Stones recommended
- Electrical Service (required): 240V / 1-phase / 25A — consult a licensed electrician
What’s Included
- HUUM CLIFF 6kW Sauna Heater
- 2 prop blocks (for removal of sauna rib slats)
- Installation and Operation Manual
Shipping & Delivery
This product ships free to the contiguous United States. Please inspect your shipment upon arrival and note any visible damage before signing.
Installation Notes
- Requires a dedicated 240V / 1-phase / 25A circuit — consult a licensed electrician
- A compatible HUUM UKU control system is required and must be installed separately
- Sauna stones must be loaded per manufacturer specifications before first use
- Removable ribs allow for optimized stone placement — use prop blocks included in the box
- Observe all safety clearance distances per the Installation & Operation Manual
- Review the Element Requirements document before purchase to confirm electrical compatibility
- For indoor sauna use only unless otherwise specified by the manufacturer
- Professional installation strongly recommended
Warranty
The HUUM CLIFF includes a 3-year limited residential warranty and a 1-year limited commercial warranty (excluding heating elements), provided by the manufacturer. As an authorized HUUM retailer, Prime Regeneration ensures full warranty coverage is passed through to you at the time of purchase. View Full Warranty Details.
Manuals & Documentation
Complete Your Sauna Setup
Everything you need to complete your HUUM CLIFF sauna setup.
- HUUM UKU Wi-Fi Sauna Control — required
- HUUM Sauna Heater Stones — 5 boxes required (~165 lbs)
- Kohler C1 Indoor Sauna Kit — up to 5-person indoor sauna (224 cu ft)
- SaunaLife Model G2 Outdoor Sauna Kit — 4-person outdoor sauna (184 cu ft)
- Shop All Sauna Heaters
FAQ
What size sauna room does the CLIFF 6kW support?
The CLIFF 6kW is rated for sauna rooms from 177 to 318 cubic feet. Use the HUUM Sizing Guide to confirm fit.
How does the CLIFF 6kW compare to the DROP 6kW?
Both cover 177–318 cu ft, but the CLIFF 6kW is floor-standing with a slim vertical profile and ~165 lb stone capacity, while the DROP 6kW is wall-mounted with a rounded droplet form and ~122 lb stone capacity. The CLIFF’s larger stone mass produces more löyly; the DROP offers a more distinctive wall-mounted aesthetic.
How does the CLIFF 6kW compare to the CLIFF 9kW?
The 6kW covers 177–318 cu ft vs. 283–460 cu ft for the 9kW. Both share the same slim dimensions and ~165 lb stone capacity. Choose the 9kW if your room is larger than 318 cu ft.
What are the removable ribs for?
The CLIFF’s rib slats can be removed to optimize stone placement and airflow. Use the included prop blocks to safely remove the ribs during stone loading.
Does it come with a control?
No — a compatible HUUM UKU control system is required and sold separately. The HUUM UKU Wi-Fi Sauna Control is the recommended option.
Does this ship for free?
Yes — free freight shipping is included to the contiguous United States.
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