4.0 kW Heating Capacity: Designed for compact sauna rooms from 106 to 177 cubic feet.

Complete Heater Package: Combines the CLIFF Mini 4 heater, UKU control system, and 132 lb of sauna stones.

Wall-Mounted Design: Keeps the heater elevated to preserve usable sauna floor space.

Ultra-Slim Profile: Measures only 6.3 in deep, making the heater particularly suitable for smaller sauna layouts.

132 lb Stone Capacity: Large stone capacity relative to the heater's compact dimensions.

Rounded Olivine Diabase Stones: Package includes 132 lb of 1–2 in (3–5 cm) rounded sauna stones.

Internal Air Duct: HUUM states that the internal air duct allows the CLIFF series to heat up to 25% faster.

Removable Ribs: Selected stainless steel ribs can be removed using the included prop blocks for more precise stone placement.

Direct Stone-to-Element Contact: Open construction positions the sauna stones directly around the heating elements.

Stainless Steel Construction: Built with stainless steel construction and industrial-quality stainless steel heating elements.

External UKU Control: Provides digital adjustment of power, operating time, temperature, and delayed start.

104–230°F Control Range: UKU specifications list an adjustable temperature range of 104°F to 230°F.

48-Hour Delayed Start: Allows sauna operation to be scheduled up to 48 hours in advance.

Wi-Fi Optional: Built-in Wi-Fi connectivity for the HUUM mobile app is available as an optional UKU configuration at additional cost.

Eight Language Options: Supports English, German, Russian, Italian, Finnish, Estonian, Polish, and French.

Safety Functions: Includes temperature and door sensors, overheat protection, and a child safety lock.

Made in Estonia: CLIFF Mini heater is designed, engineered, and manufactured in Estonia.

Model: CLIFF MINI 4STU PKG

Product Type: Electric Sauna Heater Package

Heater Model: CLIFF MINI 4

Installation: Wall-Mounted

Heater Output: 4.0 kW

Sauna Room Capacity: 106–177 cu. ft.

Voltage: 240V

Phase: 1-Phase

Amperage: 14.58A

Circuit Breaker: See Installation and Operation Manual

Control System: HUUM UKU

Standard Control Panel: Black

Wi-Fi: Optional, Depending on Selected UKU Configuration

Control Temperature Range: 104–230°F

Delayed Start: Up to 48 Hours

Languages: English, German, Russian, Italian, Finnish, Estonian, Polish, French

Smart Heating: Optional

Stone Capacity: 132 lb

Included Stones: 132 lb

Included Stone Size: 1–2 in (3–5 cm)

Included Stone Type: Rounded Olivine Diabase Sauna Stones

Heater Construction: Stainless Steel

Heating Elements: Industrial-Quality Stainless Steel

Heater Weight: 33 lb (15 kg)

Shipping Weight with Sauna Stones: 165 lb (75 kg)

Country of Manufacture: Estonia

Heater Residential Warranty: Limited 3 Years

Heater Commercial Warranty: Limited 1 Year, Excluding Heating Elements

UKU Residential Warranty: Limited 3 Years

UKU Commercial Warranty: Limited 1 Year

Included

• HUUM CLIFF Mini 4 4.0 kW Sauna Heater
• 2 Prop Blocks for Removal of Sauna Rib Slats
• HUUM UKU Black Control Console
• UKU Main Control Module
• Temperature Sensor
• Door Sensor
• Control Display Panel Cable
• Temperature Sensor Cable
• Door Sensor Cable
• 132 lb of 1–2 in (3–5 cm) Rounded Sauna Stones
• Installation and Operation Manuals
• Applicable Residential and Commercial Limited Warranties

The standard package includes the black UKU control. Wi-Fi functionality and alternative control-panel options are available as upgrades at additional cost.

HUUM CLIFF Mini 4 Sauna Heater

Width: 10.6 in (270 mm)

Depth: 6.3 in (160 mm)

Height: 38.4 in (975 mm)

Overall Dimensions: 10.6 W × 6.3 D × 38.4 H in (270 × 160 × 975 mm)

Heater Weight: 33 lb (15 kg)

Stone Capacity: 132 lb

HUUM UKU Control Console

Width: 2.2 in (55 mm)

Depth: 0.9 in (22 mm)

Height: 4.1 in (105 mm)

Overall Dimensions: 2.2 W × 0.9 D × 4.1 H in (55 × 22 × 105 mm)

HUUM UKU Main Control Module

Width: 3.5 in (90 mm)

Depth: 2.3 in (58 mm)

Height: 5.6 in (142 mm)

Overall Dimensions: 3.5 W × 2.3 D × 5.6 H in (90 × 58 × 142 mm)

Control & Sensor Cables

Display Panel Cable: 9.8 ft | 22 AWG

Temperature Sensor Cable: 16.4 ft | 24 AWG

Door Sensor Cable: 16.4 ft | 24 AWG

Shipment: This sauna heater system ships via scheduled freight delivery. The shipment arrives secured on a wooden pallet and protected with three-ply cardboard packaging.

Delivery: A delivery appointment is required. The freight carrier provides delivery service only, with limited assistance available at the delivery location.

Delivery Requirements: Prior to shipment, we may contact you to confirm delivery details and identify any access restrictions or special handling requirements that may affect delivery.

Shipping Rate: Shipping costs are determined based on location.

Accessory Freight: Eligible sauna accessories may be consolidated with the heater shipment to help minimize separate freight charges.

HUUM-CLIFF-Sauna-Heater-IOM.pdf

HUUM-UKU-Control-IOM.pdf