HUUM STEEL Mini 3.5kW Sauna Heater Package with UKU Control and 132 lbs of Sauna Stones
Best compact heater for small home sauna enthusiasts.
Elevate your sauna experience with the HUUM STEEL Mini 3.5kW Sauna Heater Package. Designed for smaller spaces, this durable stainless steel heater efficiently warms rooms up to 212 cubic feet. Its innovative internal air duct system speeds up heating, while the generous stone capacity ensures a long-lasting, gentle heat and soft steam. The included UKU control system offers precise temperature management, with an optional Wi-Fi feature for convenient remote preheating via a mobile app. Enjoy a modern, space-saving solution that delivers powerful performance and a truly relaxing sauna atmosphere.
$2958.00
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 154
#2 in Sauna Heaters
Price vs Category Average
+27%
Above average
Heating Capacity
3.5
/ kW
Who it's for
- Sauna enthusiasts seeking authentic, soft, and consistent steam quality
- Tech-savvy users wanting convenient, remote-controlled sauna pre-heating
- Design-conscious homeowners maximizing space in compact sauna rooms
Who should skip it
- Owners of mid-sized or larger home sauna environments
- Budget-focused buyers looking for entry-level heating solutions
- Users preferring a quick, effortless initial installation process
Performance breakdown
Thermal Efficiency
Internal air ducts circulate heat rapidly for faster room saturation.
Steam Quality
Massive stone capacity produces exceptionally soft, long-lasting löyly steam.
Space Optimization
Slim, wall-mounted profile maximizes floor space in compact sauna rooms.
Control Interface
Digital UKU system offers intuitive, precise temperature management and remote access.
Build Durability
Stainless steel construction ensures longevity in high-heat, humid environments.
Safety Integration
Integrated child locks and overheat protection provide essential peace of mind.
Key Specs
Heating Capacity
3.5 kW
Mounting Type
Wall Mounted
Stone Capacity
132.0 lbs
Voltage
240.0 Volts
Housing Material
Stainless Steel
Max Sauna Room Volume
212.0 cubic feet
Max Timer Duration
48.0 hours
Safety Features
Overheat Protection, Child Lock
Features
- Compact design for small sauna rooms
- Heats sauna up to 25% faster
- Large stone capacity for mild heat
- UKU control for precise temperature
- Optional Wi-Fi for remote control
- Durable stainless steel construction
- Delayed start function up to 48 hours
- Integrated child lock for safety
What customers say
Customers consistently praise the HUUM STEEL Mini for its stunning, minimalist design, noting how the sleek, compact unit elevates the sauna experience visually. The quality of the heat is frequently highlighted; users find the large stone capacity delivers a soft, enveloping warmth. While it represents a significant investment, the intuitive UKU control system makes operation effortless, reinforcing the perception of a premium, reliable product that justifies its cost through superior performance and aesthetic appeal.
Know before you buy
The HUUM STEEL Mini 3.5kW is designed for smaller sauna spaces with a maximum volume of 212 cubic feet. It is best suited for compact home saunas where space efficiency is a priority.
Yes, the included UKU control system supports remote operation. If you opt for the Wi-Fi-enabled version, you can preheat your sauna from anywhere using the dedicated mobile app.
With a 132-pound stone capacity, this heater provides a more consistent, gentle heat compared to heaters with fewer stones. The large mass of stones allows for soft, long-lasting steam when water is poured over them.
The unit includes built-in overheat protection to ensure safe operation. It also features an integrated child lock on the UKU control console to prevent unauthorized or accidental adjustments.
While the unit is wall-mounted and designed for straightforward installation, it requires a 240V electrical connection. We recommend having a licensed electrician perform the wiring to ensure it meets local building and safety codes.
The UKU control system allows you to schedule a delayed start for up to 48 hours in advance. This is ideal if you want to ensure your sauna is ready at a specific time without needing to be home to turn it on.
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