HUUM HIVE Series 18.0kW Sauna Heater with Stones and Control

The HIVE 18.0kW Sauna Heater doesn’t just heat a room. It defines it. With 18kW of power wrapped in sleek stainless steel, this heater was built to command large sauna spaces up to 1,236 cubic feet with ease.

This all-inclusive package delivers everything you need for the perfect modern sauna: the powerhouse HIVE heater, intuitive UKU control (with optional Wi-Fi), a robust extension box, and 528 pounds of sauna stones that turn every session into rolling waves of heat and steam.

Crafted in Estonia, the HIVE carries the elegance of European design with the endurance of commercial-grade engineering.

HIVE 18.0kW Sauna Heater: with adjustable legs, pre-installed air tunnel, and manual
UKU Control: console, sensors, cables, and main control module
UKU Extension Box: for high-output heater integration
Sauna Stones: 528 lbs of rounded olivine diabase (2″–4″ / 5–10 cm)

HIVE 18.0kW Sauna Heater

• Commercial-grade power: 18.0kW of heat engineered for sauna rooms from 636 to 1,236 cu ft
• Massive stone capacity: Holds 528 lbs of sauna stones for longer, gentler steam and soft, rolling löyly
• Efficient design: Direct contact between stones and heating elements + air tunnel for faster heat-up and longer element life
• Smart compatibility: Works seamlessly with UKU controls and the UKU extension box (included)
• Built to last: Stainless steel body with industrial-quality heating elements, SGS listed
• Flexibility: Adjustable legs for perfect positioning in any sauna layout
• Crafted in Estonia: Elegant design meets precision European engineering
• Warranty: Limited 3-year manufacturer warranty (excluding elements)
• Dimensions: 22″ diameter × 29.5″ height (560 × 750 mm)
  
  

UKU Control

• Smart, sleek, and versatile: A minimalist black display panel with optional decorative finishes to match your sauna style
• Full control at your fingertips: Set on/off, temperature (104–230°F), delay start (up to 48 hrs), and timer functions
• Optional Wi-Fi upgrade: Pair with the HUUM mobile app for remote access from anywhere (additional charge)
• Multilingual menu: Operates in 8 languages: EN, DE, RU, IT, FI, ET, PL, FR
• Flexible installation: Mount inside or outside the sauna room; connects to lights and ventilation
• Safety-first features: Door sensor, overheat protection, and child lock
• Dual-unit design: Slim display panel plus remotely located main control module for clean installation
• Dimensions:
  • Control Console: 2.2″ W × 0.9″ D × 4.1″ H (55 × 22 × 105 mm)
  • Main Control Module: 3.5″ W × 2.3″ D × 5.6″ H (90 × 58 × 142 mm)
• Warranty: Limited 3-year warranty

UKU Extension Box

• Heavy-duty compatibility: Required for heaters over 12 kW, including the HIVE 18 kW
• Seamless integration: Works hand-in-hand with the UKU control system
• Compact and practical: Keeps wiring tidy while handling high-output loads
• Durable build: Designed to HUUM’s safety and quality standards
• Dimensions: 7″ W × 4″ D × 10″ H (178 × 101 × 254 mm)
• Warranty: Limited 5-year warranty

Stones 24

• Material: Olivine diabase sauna stones
• Shape: Rounded to complement the HIVE heater’s open design
• Performance: Durable with high heat capacity for long-lasting steam
• Size Range: 2″ to 4″ (5–10 cm)
• Quantity: 528 lbs (240 kg) included with package