HUUM DROP 4.5STU Pkg

DROP Series 4.5kW Sauna Heater Package

The HUUM DROP 4.5kW Sauna Heater Package includes everything needed to create a beautifully heated, spa-quality sauna experience. This complete set features the award-winning DROP 4.5kW wall-mounted heater, your choice of UKU Local or UKU Wi-Fi control, and premium sauna stones. Designed for sauna rooms from 106–248 cubic feet, this package delivers both performance and elegance in one seamless solution.

At the core of the package is the sculptural DROP 4.5kW electric heater, known for its compact size and exceptional stone capacity. Pair it with the UKU Local control for in-room operation, or upgrade to UKU Wi-Fi to preheat and manage your sauna remotely through the HUUM mobile app.

The heater holds an impressive 122 lbs of rounded olivine stones, producing a softer, more consistent high heat and luxurious steam. This generous stone volume exceeds many traditional wood-burning stoves, allowing bathers to ladle more water for richer steam and a more immersive sauna session.

Inspired by the pure shape of a water droplet, the DROP heater’s organic curves soften the look of a traditional sauna interior while making a bold design statement. Its striking appearance earned HUUM the prestigious Red Dot Award for product design, blending artistic form with engineering excellence.

For sauna enthusiasts who want design, innovation, and superior heat performance in one package, the HUUM DROP delivers an elevated sauna experience — with the option to start your session from anywhere using Wi-Fi control.

HUUM DROP 4.5kW Sauna Heater

• Award-winning water drop design

• 240V / single-phase operation

• Works with HUUM UKU controls (sold separately)

• Large 122 lb stone capacity (4 boxes required)

• Direct stone-to-element contact for efficient heating

• Exposed stones create longer-lasting, softer heat

• Stainless steel body and industrial-grade elements

• Wall-mounted, space-saving design

• Made in Estonia

• Size: 15.4"W × 13.2"D × 23.3"H

• SGS Listed

• Warranty: 3-year residential / 1-year commercial (elements excluded)

HUUM UKU Control

• Sleek black display (color options available)

• Controls power, time, temp, and delay

• Temp range: 104–230°F

• Delay start up to 48 hrs

• Optional Wi-Fi app control

• 8 language options

• Indoor or outdoor install (weatherproof box required outdoors)

• Displays set & room temperature

• Includes temp sensor + door sensor

• Connects to lights & ventilation

• Overheat protection + child lock

• Panel size: 2.2"W × 0.9"D × 4.1"H

Sauna Stones

• Olivine diabase stones

• Rounded for optimal airflow & steam

• Excellent heat retention

• Size: 2"–4"

Drop 4.5kW Sauna Heater

• 4.5kW Sauna Heater
• Wall-Mount Bracket
• Installation and Operation Manual
• 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

UKU

• Black Control Console
• Main Control Module
• Temperature Sensor
• Door Sensor
• Control Display Panel Cable
• Temperature Sensor Cable
• Door Sensor Cable
• Installation and Operation Manual
• 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty

Stones 24

• 132 lbs of 2" - 4" (5-10 cm) Round Sauna Stones

HUUM DROP 4.5STU Package — Specifications

Electrical Requirements

Heater Dimensions

UKU Control Specifications

Control Panel Dimensions

Main Control Module Dimensions

Cable Lengths

HUUM is an award-winning Estonian sauna heater manufacturer known for blending timeless Nordic craftsmanship with modern engineering. Founded in the heart of Estonia—where sauna culture runs deep—HUUM has earned global recognition for its minimalist design, energy-efficient performance, and commitment to elevating the authentic sauna experience.

Each HUUM heater is thoughtfully crafted using high-quality stainless steel and built to deliver exceptionally soft, long-lasting steam. Their signature sculptural designs, such as the Red Dot Award–winning DROP heater, showcase a unique balance of form and function—offering both striking aesthetics and superior thermal performance.

Dedicated to innovation, HUUM also leads the industry in smart sauna technology. Their UKU Wi-Fi–enabled controls allow users to preheat and manage their sauna from anywhere, bringing modern convenience to a centuries-old tradition.

With a focus on sustainability, durability, and user-centered design, HUUM continues to set the standard for premium electric sauna heaters worldwide. Their products reflect a true passion for sauna culture—crafted to enhance your wellness routine with beauty, simplicity, and unparalleled heat quality.

Installation & Operation Manual

Warranty

Stone Placement Video

Stone Requirements