Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Includes

What Is Included

10.5 KW

Included with purchase

10.5 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

6 KW

Included with purchase

6.0 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

9 KW

Included with purchase

9.0 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

3.5 KW

Included with purchase

3.5 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 133 lb stones (quantity 4 × 33 lb of 1" - 2" stones boxes).

Contents vary by configuration. Check the row for the option selected above.

Technical Specifications

Technical Specifications

Model & Application

Model & Application
Brand

HUUM

Catalog Product

HUUM CLIFF & CLIFF Mini Electric Sauna Heater | 3.5 to 10.5 kW

Heater Type

Electric sauna heater

Model Number

240 V / 1 phase: CLIFF 11; 6 kW / 240 V / 1 phase: CLIFF 6; 9 kW / 240 V / 1 phase: CLIFF 9; 240 V / 1 phase: CLIFF MINI 4

SKU / Part Number

240 V / 1 phase: H1004032; 6 kW / 240 V / 1 phase: H1004012; 9 kW / 240 V / 1 phase: H1004022; 240 V / 1 phase: H1005012

Sauna Sizing

Sauna Sizing
Maximum Room Volume

240 V / 1 phase: 566 ft³; 6 kW / 240 V / 1 phase: 318 ft³; 9 kW / 240 V / 1 phase: 460 ft³; 240 V / 1 phase: 177 ft³

Minimum Room Volume

240 V / 1 phase: 354 ft³; 6 kW / 240 V / 1 phase: 177 ft³; 9 kW / 240 V / 1 phase: 283 ft³; 240 V / 1 phase: 106 ft³

Electrical

Electrical
Minimum Circuit

240 V / 1 phase, 9 kW / 240 V / 1 phase: 50 A; 6 kW / 240 V / 1 phase: 30 A; 240 V / 1 phase: 20 A

Phase

1 phase

Rated Current

240 V / 1 phase: 43.75 A; 6 kW / 240 V / 1 phase: 25 A; 9 kW / 240 V / 1 phase: 37.5 A; 240 V / 1 phase: 14.58 A

Rated Power

6 kW / 240 V / 1 phase: 6 kW; 9 kW / 240 V / 1 phase: 9 kW

Supply Voltage

240 V

Wire Size

240 V / 1 phase, 9 kW / 240 V / 1 phase: 8 AWG; 6 kW / 240 V / 1 phase: 10 AWG; 240 V / 1 phase: 12 AWG

Dimensions & Weight

Dimensions & Weight
Assembled Dimensions

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 11.25" W x 11.25" W x 38.25" H; 240 V / 1 phase: 6.75" W x 11.5" D x 38.5" H

Heater Depth

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 10.63 in; 240 V / 1 phase: 6.3 in

Heater Height

38.39 in

Heater Weight

37.5 lb

Heater Width

10.63 in

Minimum Host-Room Height

85.63 in

Product Weight

240 V / 1 phase: 37.5 lbs; 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 35 lbs; 240 V / 1 phase: 33 lbs

Installation Clearances

Installation Clearances
Ceiling-Clearance Reference Height Above Finished Floor

38.39 in

Ceiling-Clearance Reference Plane

Top Of Rocks

Left-Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Right-Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Combustible Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Minimum Installation Envelope Width

240 V / 1 phase: 40.55 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 15.35 in; 9 kW / 240 V / 1 phase: 29.53 in

Top of Rocks Above Finished Floor

38.39 in

Included & Required

Included & Required
Included Components

240 V / 1 phase: 10.5kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 6 kW / 240 V / 1 phase: 6.0kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 9 kW / 240 V / 1 phase: 9.0kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 240 V / 1 phase: 3.5kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements)

Required, Not Included

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: UKU Control, 165 lbs stones (Qty 5 x 33 lbs of 1" - 2" stones boxes); 240 V / 1 phase: UKU Control, 133 lbs stones (Qty 4 x 33 lbs of 1" - 2" stones boxes)

Certifications

Certifications
Certifications & Listings

CE, IPX4, SGS

Warranty

Warranty
Residential Warranty

3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

An electric sauna heater that heats the sauna room and stone mass for traditional löyly. Choose the output from adjusted room volume, then match the exact voltage, phase, circuit, controls, stones, clearances, and ventilation.

What to plan

  • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
  • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
  • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
  • Follow the current installation manual and use a qualified installer.

Required separately

Complete the system with these items.

Designed to work with

Model-specific replacements and compatible system components.

Optional accessories

Optional upgrades and accessories.

Sauna packages that offer this heater

Available heater options for these sauna packages.

Other heater options

Compare these options; sizing, power, controls, clearances, and stones may differ.

Attachments
Legacy manuals for older installations

Use these only when the document revision matches the installed product.

Gallery

HUUM CLIFF & CLIFF Mini Electric Sauna Heater | 3.5 to 10.5 kW

HUUM CLIFF brings a tall, open stone surface to rooms where floor area and clearances are tight. Choose wall-mounted CLIFF Mini 3.5 kW or floor-standing CLIFF 6, 9, and 10.5 kW for current U.S. manual room ranges from 106 to 566 cubic feet. UKU control and model-specific 1 to 2-inch stones are required and sold separately.

Build A Quote:

Choose a HUUM UKU controller (required)

Your heater will not run without a UKU. Local mounts outside the hot room and runs the sauna from its own panel. Wi-Fi does the same and adds scheduling and remote start from the HUUM app, which is what you want when the sauna is not ten steps from the couch. Every finish below is the same controller underneath, so pick on looks and budget. Already own a UKU? Take the first option and we will check yours against this heater before anything ships.

I already own a compatible HUUM UKU controller package UKU Local, Black +$1,062.00 UKU Local, Wood +$1,375.00 UKU Wi-Fi, Black (recommended) +$1,324.00 UKU Wi-Fi, Wood +$1,637.00 UKU Wi-Fi, Glass +$1,724.00 UKU Wi-Fi, Mirror +$1,987.00 UKU Wi-Fi, Gold +$1,987.00 UKU Wi-Fi, Black (recommended)(+$1,324.00)
Add the required stones: CLIFF Mini 3.5 kW

The CLIFF Mini 3.5 kW holds about 132 lb of 1 to 2 inch stones, and stones do not come in the box with the heater. That comes to 4 boxes. Stack them loosely so air can move between them and the elements stay covered, and plan on restacking once a year.

I already have the approved 1–2 inch stones for CLIFF Mini 3.5 kW 4 × 33-lb boxes of HUUM STONES 12 (132 lb supplied) +$320.00 4 × 33-lb boxes of HUUM STONES 12 (132 lb supplied)(+$320.00)
Add the required stones: CLIFF 6/9/10.5 kW

The CLIFF 6, 9 and 10.5 kW holds about 165 lb of 1 to 2 inch stones, and stones do not come in the box with the heater. That comes to 5 boxes. Stack them loosely so air can move between them and the elements stay covered, and plan on restacking once a year.

I already have the approved 1–2 inch stones for CLIFF 6/9/10.5 kW 5 × 33-lb boxes of HUUM STONES 12 (165 lb supplied) +$400.00 5 × 33-lb boxes of HUUM STONES 12 (165 lb supplied)(+$400.00)
Add Flange to embed heater in bench or floor
None Embedding Flange for CLIFF/STEEL Series Sauna Heaters +$331.00
Rail C – Safety Rail for CLIFF Series Sauna Heaters
None Safety Rail for CLIFF Series Sauna Heaters +$409.00
Add Reflect C – Allows for heater installation closer to wall
None Reflec C - Allows for heater installation closer to wall +$294.00
Cable Extensions

Add flexibility to your installation with 75′ cables.

Free quote for Sauna Wood

Did you know Sauna Marketplace specializes in premium Sauna Woods? Whether you’re looking for the highest grade material, a specific look, or to save money we have something for you.

Share your selected heater size and add-ons. Prices and availability are confirmed when the link is opened.

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Fulfillment Partner:

We partner with distributors and manufacturers who guarantee the lowest prices, fastest delivery, and additional 'whatever-it-takes' support. 

Bathing Distribution Center - Chicago
Zero Interest Payments:

Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

Pay with HSA/FSA:

We teamed up with FLEX to make HSA/FSA payments easier than ever.

Why buy a HUUM Sauna Heater from Sauna Marketplace?

Current HUUM product guide

Use the current Product Guide and Manuals & Documents sections on this page for verified model selection, sizing, installation, and warranty information.

Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Includes

What Is Included

10.5 KW

Included with purchase

10.5 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

6 KW

Included with purchase

6.0 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

9 KW

Included with purchase

9.0 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 165 lb stones (quantity 5 × 33 lb of 1" - 2" stones boxes).

3.5 KW

Included with purchase

3.5 kW sauna heater 2 prop blocks (for removal of sauna rib slats) installation and operation manual.

Required separately

UKU control, 133 lb stones (quantity 4 × 33 lb of 1" - 2" stones boxes).

Contents vary by configuration. Check the row for the option selected above.

Technical Specifications

Technical Specifications

Model & Application

Model & Application
Brand

HUUM

Catalog Product

HUUM CLIFF & CLIFF Mini Electric Sauna Heater | 3.5 to 10.5 kW

Heater Type

Electric sauna heater

Model Number

240 V / 1 phase: CLIFF 11; 6 kW / 240 V / 1 phase: CLIFF 6; 9 kW / 240 V / 1 phase: CLIFF 9; 240 V / 1 phase: CLIFF MINI 4

SKU / Part Number

240 V / 1 phase: H1004032; 6 kW / 240 V / 1 phase: H1004012; 9 kW / 240 V / 1 phase: H1004022; 240 V / 1 phase: H1005012

Sauna Sizing

Sauna Sizing
Maximum Room Volume

240 V / 1 phase: 566 ft³; 6 kW / 240 V / 1 phase: 318 ft³; 9 kW / 240 V / 1 phase: 460 ft³; 240 V / 1 phase: 177 ft³

Minimum Room Volume

240 V / 1 phase: 354 ft³; 6 kW / 240 V / 1 phase: 177 ft³; 9 kW / 240 V / 1 phase: 283 ft³; 240 V / 1 phase: 106 ft³

Electrical

Electrical
Minimum Circuit

240 V / 1 phase, 9 kW / 240 V / 1 phase: 50 A; 6 kW / 240 V / 1 phase: 30 A; 240 V / 1 phase: 20 A

Phase

1 phase

Rated Current

240 V / 1 phase: 43.75 A; 6 kW / 240 V / 1 phase: 25 A; 9 kW / 240 V / 1 phase: 37.5 A; 240 V / 1 phase: 14.58 A

Rated Power

6 kW / 240 V / 1 phase: 6 kW; 9 kW / 240 V / 1 phase: 9 kW

Supply Voltage

240 V

Wire Size

240 V / 1 phase, 9 kW / 240 V / 1 phase: 8 AWG; 6 kW / 240 V / 1 phase: 10 AWG; 240 V / 1 phase: 12 AWG

Dimensions & Weight

Dimensions & Weight
Assembled Dimensions

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 11.25" W x 11.25" W x 38.25" H; 240 V / 1 phase: 6.75" W x 11.5" D x 38.5" H

Heater Depth

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 10.63 in; 240 V / 1 phase: 6.3 in

Heater Height

38.39 in

Heater Weight

37.5 lb

Heater Width

10.63 in

Minimum Host-Room Height

85.63 in

Product Weight

240 V / 1 phase: 37.5 lbs; 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: 35 lbs; 240 V / 1 phase: 33 lbs

Installation Clearances

Installation Clearances
Ceiling-Clearance Reference Height Above Finished Floor

38.39 in

Ceiling-Clearance Reference Plane

Top Of Rocks

Left-Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Right-Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Combustible Side Clearance

240 V / 1 phase: 14.96 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 2.36 in; 9 kW / 240 V / 1 phase: 9.45 in

Minimum Installation Envelope Width

240 V / 1 phase: 40.55 in; 6 kW / 240 V / 1 phase, 240 V / 1 phase: 15.35 in; 9 kW / 240 V / 1 phase: 29.53 in

Top of Rocks Above Finished Floor

38.39 in

Included & Required

Included & Required
Included Components

240 V / 1 phase: 10.5kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 6 kW / 240 V / 1 phase: 6.0kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 9 kW / 240 V / 1 phase: 9.0kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements); 240 V / 1 phase: 3.5kW sauna heater 2 prop blocks (for removal of sauna rib slats) Installation and operation manual 5-Year limited warranty (excluding elements)

Required, Not Included

240 V / 1 phase, 6 kW / 240 V / 1 phase, 9 kW / 240 V / 1 phase: UKU Control, 165 lbs stones (Qty 5 x 33 lbs of 1" - 2" stones boxes); 240 V / 1 phase: UKU Control, 133 lbs stones (Qty 4 x 33 lbs of 1" - 2" stones boxes)

Certifications

Certifications
Certifications & Listings

CE, IPX4, SGS

Warranty

Warranty
Residential Warranty

3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

An electric sauna heater that heats the sauna room and stone mass for traditional löyly. Choose the output from adjusted room volume, then match the exact voltage, phase, circuit, controls, stones, clearances, and ventilation.

What to plan

  • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
  • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
  • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
  • Follow the current installation manual and use a qualified installer.

Required separately

Complete the system with these items.

Designed to work with

Model-specific replacements and compatible system components.

Optional accessories

Optional upgrades and accessories.

Sauna packages that offer this heater

Available heater options for these sauna packages.

Other heater options

Compare these options; sizing, power, controls, clearances, and stones may differ.

Attachments
Legacy manuals for older installations

Use these only when the document revision matches the installed product.

Gallery

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PLAN THE WHOLE SAUNA

The room and heater still have to work as one system.

Start with the room dimensions, then account for glass, masonry, insulation, ceiling height, required clearances, and available electrical service. That is how we move from a product that looks right to a sauna that heats evenly and comfortably.