The heart of this all-inclusive sauna heater package is the award-winning DROP 4.5 kW electric sauna heater engineered for spaces up to 247 cubic feet (CF). Choose between the advanced UKU Local digital sauna control, or the added convenience of an UKU Wi-Fi control package which allows you to preheat your sauna from anywhere with your mobile device. Its impressive 122lbs of rounded olivine stones for a more consistent soft, high heat and superior steam.

The design of the HUUM DROP sauna heater is inspired by the purest element in nature – a drop of water. Its rounded design softens and compliments the angular interior of a classic sauna, giving it a touch of elegance. But DROP isn’t only about the looks. This compact wall-mounted heater can actually fit up to 122 lbs of stones, exceeding most wood-burning stoves and guaranteeing long-lasting steam.

Winner of the prestigious Red Dot Award in Europe for design, the HUUM DROP combines sculptural beauty with engineering excellence. It's exceptionally large rock capacity allows the sauna bather to ladle more water onto the stones for a more intense bathing experience while creating a more consistent, soft high heat.

The available Wi-Fi control lets you preheat your sauna from anywhere. For bathers who want the absolute best sauna heater.

Drop 4.5kW Sauna Heater
- Unique water drop design
- 240V/1PH operation
- For sauna rooms from 106 to 247 cu. ft.
- Works with UKU controls (sold separately)
- 122 pound stone capacity (required 4 boxes sold separately)
- Direct contact between stones and heating elements
- More exposed stones create a longer and milder heat
- Stainless steel construction
- Stainless steel, industrial quality heating elements
- Wall-mounted design
- Designed, engineered, and made in Estonia
- Dimensions: 15.4"W (390mm) x 13.2"D (335mm) x 23.3"H (590mm)
- SGS Listed
- Limited 5-year warranty (excluding elements)
UKU
- Sleek Black control display panel
- Multiple Color Options available (additional charges apply)
- Settable on/off, time, temperature, and delay
- Settable temperature range of 104-230F
- Delayed start up to 48hrs in advance
- Optional Built-in Wi-Fi interface for HUUM mobile app (additional charges apply)
- 8 Language options: English, German, Russian, Italian, Finnish, Estonian, Polish and French
- Inside/outside sauna room installation
- Optional smart heating setting
- Available decorative control display panels
- Displays set temperature and room temperature
- Temperature sensor
- Door sensor to keep the heat inside the room
- Remotely located main control module
- Connects to lights and ventilation
- Overheat protection
- Child safety lock
- Control Console Dimensions: 2.2"W (55mm) x 0.9"D (22mm) x 4.1"H (105mm)
- Main Control Module Dimensions: 3.5"W (90mm) x 2.3"D (58mm) x 5.6"H (142mm)
Stones 24
- Olivine diabase sauna stones
- Rounded shape to complement heater design
- Durable with high-heat capacity
- Stones range from 2" to 4" (5-10 cm)
DROP 4.5
- Kilowatt Rating: 4.5 KW
- Minimum Cubic Feet: 106 CF
- Maximum Cubic Feet: 247 CF
- Heater Weight: 24 lbs
- Shipping Weight with Sauna Stones: 146 lbs
- 240V, Single Phase Amperage: 18.8 Amps
- Circuit Breaker Amperage: 30 Amps
- Wire Size: 10 AWG
- Width: 15.4"W (390mm)
- Depth: 13.2"D (335mm)
- Height: 23.3"H (590mm)
UKU
- Minimum Temperature Setting: 104 F
- Maximum Temperature Setting: 230 F
- Shipping Weight: 20 lbs
- Console Dimensions
- Width: 2.2" (55mm)
- Depth: 0.9" (22mm)
- Height: 4.1" (105mm)
- Main Module Dimensions
- Width: 3.5" (90mm)
- Depth: 2.3" (58mm)
- Height: 5.6" (142mm)
- Display Panel Cable
- Length: 9.8 ft
- AWG: 22
- Temp Sensor Cable
- Length: 16.4 ft
- AWG: 24
- Door Sensor Cable
- Length: 16.4 ft
- AWG: 24
Drop 4.5kW Sauna Heater
- 4.5kW sauna heater
- Wall-mount bracket
- Installation and operation manual
- Limited 5-year 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
- 5-Year limited warranty
Stones 24
- 132 lbs of 2" - 4" (5-10 cm) round Olivine sauna stones
- Rail D (Safety Rail for DROP heaters). Beautiful light-colored wooden arcs complement the design of the heater.
- Current ETA: 1-2 weeks. Shipping lead time is subject to change.
- FREE shipping within the contiguous United States.
**If you’re in Canada, please reach out for a shipping quote.
DROP Manual
UKU Controller Manual
UKU Install Diagram
Stone Requirements