The HUUM Drop is an award-winning wall-mounted electric sauna heater whose organic, water-drop silhouette transforms a purely functional element into a refined focal point — softening the angular interior of any classic sauna with a touch of sculptural elegance. Available in 4.5kW, 6kW, 7.5kW, and 9kW to suit sauna rooms from small personal retreats up to 530 cubic feet.
Despite its compact wall-mounted footprint, the Drop packs a 122 lb stone capacity — exceeding most wood-burning stoves — for soft, consistent, long-lasting steam and the kind of deep, enveloping heat that defines an authentic sauna experience. Pour water over the stones and feel the löyly rise. Fast heat-up times and precise temperature control make every session effortless.
This complete package includes the HUUM UKU Wi-Fi controller and sauna stones — everything ready for immediate installation. The UKU app lets you control temperature, set schedules, and preheat your sauna from anywhere via smartphone.
Professional electrical installation required. 240V.
Key Features
• Sauna Room Size: suitable for rooms from 106–530 cu. ft.
• Design: organic water-drop form with minimalist aesthetic
• Installation: wall-mounted
• Voltage / Phase: 240V / 1PH
• Temperature Range: adjustable from 122–230°F
• Heat-Up Time: approximately 20–30 minutes
• Stone Capacity: high capacity for steady, even heat (122 lbs)
• Steam Capability: water can be poured on stones
• Construction: stainless steel
• Control: wi-fi enabled, controllable via mobile app
• Scheduling: programmable weekly schedule
• Origin: made in Estonia
Specifications
All HUUM DROP Models
• Installation Type: wall-mount
• Voltage / Phase: 240V / 1PH
• Dimensions: 15.4"W × 13.2"D × 23.3"H
• Stone Capacity: 122 lbs
• Min / Max Temperature: 104°F / 230°F
DROP 4.5 kW
• Sauna Room Size: 106–248 cu. ft.
• Amperage: 18.75A
• Circuit Breaker: 30 A
• Wire Size: 10 AWG
• Heater Weight: 24 lbs
DROP 6.0 kW
• Sauna Room Size: 177–318 cu. ft.
• Amperage: 25 A
• Circuit Breaker: 30 A
• Wire Size: 10 AWG
• Heater Weight: 24 lbs
DROP 7.5 kW
• Sauna Room Size: 248–389 cu.ft.
• Amperage: 31.25 A
• Circuit Breaker: 40 A
• Wire Size: 8 AWG
• Heater Weight: 25 lbs
DROP 9.0 kW
• Sauna Room Size: 283–460 cu. ft.
• Amperage: 37.5 A
• Circuit Breaker: 50 A
• Wire Size: 8 AWG
• Heater Weight: 24 lbs
Included
• HUUM DROP electric sauna heater
• Wall-mount bracket
• HUUM black UKU wi-fi sauna controller
• UKU control panel
• Main wi-fi module
• Temperature sensor
• Door sensor
• Control display panel cable (9.84 ft, 22AWG)
• Temperature sensor cable (16.4 ft, 24AWG)
• Door sensor cable (16.4 ft, 24AWG)
• HUUM 2–4" rounded olivine sauna stones (4 boxes – 122 lbs)
• Installation & operation manual