HUUM CLIFF 9 Electric Sauna Heater | Complete Package Options

Slim Design for Space-Conscious Saunas

The CLIFF 9 has a narrow vertical footprint, making it easier to place in sauna rooms where layout, bench placement, and walking space matter.

Powerful 9kW Performance

Bathing Brands lists the CLIFF 9 as a 9kW sauna heater designed for sauna rooms from 283 to 460 cubic feet.

Large 165 lb Stone Capacity

The CLIFF 9 holds approximately 75 kg / 165 lbs of sauna stones, helping create soft, steady heat and a more satisfying löyly experience. HUUM’s current CLIFF specification table lists the CLIFF series stone holding capacity at 75 kg.

Authentic Löyly

Pour water over the heated stones to create steam, humidity, and the atmosphere that define traditional Finnish-style sauna bathing.

Small Safety Distances

Bathing Brands describes the CLIFF 9 as a slim electric heater with remarkably small safety distances, making it well suited for sauna rooms with limited space.

Internal Air Tunnel

The CLIFF’s internal air tunnel supports faster heat-up and improved airflow through the heater. HUUM notes this design can accelerate heating by 25% and extend heating element life.

Red Dot Award-Winning Design

HUUM notes that the CLIFF heater won a Red Dot Design Award in 2021, reflecting its refined design and thoughtful engineering.

Designed and Made in Estonia

HUUM heaters are designed, engineered, and made in Estonia, combining modern Nordic design with authentic sauna performance.

What Makes HUUM CLIFF Different?

A Slim Heater with a Large Stone Experience

The HUUM CLIFF series is designed to deliver the benefits of a large stone heater in a slimmer, more flexible form.

The open stainless steel body exposes more stone surface area, allowing the stones and heating elements to work together for steady heat and rich steam. The result is softer löyly and a more traditional sauna feel than many compact electric heaters can provide.

The CLIFF 9 is especially valuable for sauna rooms where you want strong heat output and a large stone mass, but do not want the heater to dominate the floor plan.

HUUM CLIFF 9 Sauna Heater

Slim floor-standing electric sauna heater with stainless steel construction and 9kW output.

Adjustable Legs

Included adjustable legs support proper floor placement and leveling during installation.

Installation & Operation Manual

Manufacturer documentation included for installation, safety clearances, operation, and maintenance.

Manufacturer Warranty Information

Warranty documentation included with the heater.

Required but Sold Separately

• HUUM UKU Control System
  
• HUUM Sauna Stone Package
  
• Optional HUUM CLIFF Safety Rail
  
• Optional HUUM Reflect C
  
• Optional HUUM Flange CS
  

The standalone CLIFF 9 heater does not include the UKU control system or sauna stones. Both are required for operation and should be selected from the package options above.

General

Brand: HUUM

Model: CLIFF 9

SKU: H1004022

Product Type: Electric Sauna Heater

Mounting Style: Floor-Standing

Power Rating: 9kW

Primary Fuel: Electric

Construction: Stainless Steel

Control Type: External HUUM UKU control required

Recommended Use: Medium to larger traditional sauna rooms, modern home saunas, custom sauna rooms, and premium sauna kits

Country of Origin: Estonia

Sauna Room Sizing

Recommended Sauna Room Size: Approx. 283–460 cu. ft.

Metric Range: Approx. 8–13 m³

Important Sizing Note: Glass, tile, stone, brick, concrete, log walls, and other cold surfaces can increase adjusted room volume.

Final heater sizing should always account for insulation quality, glass area, stone or tile surfaces, ceiling height, ventilation, and overall sauna design.

Electrical

Supply Voltage: 240V

Phase: 240V 2~

Fuse / Breaker Reference: 50A

Power Cable Reference: 8 AWG

Control Type: HUUM UKU control required

Professional Installation: Required by a licensed electrician

Stone Capacity

Stone Capacity: Approx. 165 lbs

Required Stone Package: 5 boxes of HUUM sauna stones 12

Stones Required: Yes

Stones Included with Base Heater: No

Dimensions & Weight

Width: 270 mm / approx. 10.6"

Depth: 270 mm / approx. 10.6"

Height: 975 mm / approx. 38.4"

Heater Weight: 16 kg / approx. 35.3 lbs

Safety Clearances

Safety Distance A: 240 mm / approx. 9.4"

Safety Distance B: 750 mm / approx. 29.5"

Safety Distance C: 270 mm / approx. 10.6"

Always confirm final clearances with the official HUUM installation manual before installation. HUUM’s current CLIFF specification table lists these safety distance values for the CLIFF 9.

Package Details

Sales Unit: 1 heater

Controller Included: No

Stones Included: No

Adjustable Legs Included: Yes

Installation Manual Included: Yes

Safety Rail Included: No

Reflect C Included: No

Flange CS Included: No

Resources- Click Links Below

HUUM Cliff Manual

HUUM Cliff Spec Diagram

HUUM Stone Requirements

Elements Required

Huum warranty

Size Your Sauna

Click Here for Video on Installing Cliff Safety Rail

Click Here for Video on Installing Cliff and Steel Embedding Flange

Click Here for Video on Installing the Cliff Heat Reflector

Installation Notes

Professional Installation Required

The HUUM CLIFF 9 must be installed by a licensed electrician and in accordance with the official HUUM installation manual, local electrical code, and all required safety clearances.

Because the CLIFF 9 requires a separate UKU control system, sauna stones, correct wiring, proper floor placement, and required clearances, installation should be planned before the sauna is completed whenever possible.

Before ordering or installing, confirm:

• Sauna room adjusted cubic footage
  
• UKU control selection
  
• Stone package requirements
  
• Electrical requirements
  
• Heater placement and safety clearances
  
• Floor placement and surrounding materials
  
• Ventilation and bench layout
  
• Whether a safety rail, Reflect C, or Flange CS is needed for your installation
  

Always refer to the official manufacturer documentation before installation.

• Free Shipping: This order qualifies for free shipping within the contiguous United States.
• Processing Time: In-stock items typically leave the warehouse within 1–3 business days. This is the processing period before transit, not the final delivery time.
• Confirm Availability: Inventory can change quickly. Please call, text, or email NW Immersion before ordering if you need confirmation of current stock or have a specific delivery deadline.
• Multiple Packages: The heater, sauna stones, controls, and accessories may ship in separate boxes or on separate pallets. Packages may arrive on different days.
• Tracking: Tracking information will be emailed for each shipment as soon as it leaves the warehouse.
• Inspect Upon Arrival: Check every package for visible damage before accepting delivery. Photograph any damage and contact NW Immersion promptly so we can assist.

Questions about availability, delivery, heater sizing, controls, or installation requirements? Our U.S.-based sauna specialists are available by phone, text, or email.

Click Here for the HUUM Manufacturer Warranty

HUUM Manufacturer Warranty

Backed by HUUM’s manufacturer warranty when installed and used according to HUUM’s official instructions.

Warranty coverage may vary by component, installation type, use environment, maintenance, chimney connection, and fuel use. Sauna stones, chimney components, and accessories may each carry their own warranty terms.

As an Authorized HUUM Dealer, NW Immersion is here to help with stove sizing, product selection, delivery coordination, troubleshooting, warranty guidance, and long-term support.

Always refer to the official HUUM warranty documentation included with your stove for complete terms and final coverage details.