Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.
That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.
We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.
| Shipping CostPlease inquire if shipping outside the continental USA. | Free |
|---|---|
| KW | 10.5 KW, 6 KW, 9 KW |
| Made in | EstoniaAcross the Gulf of Finland, Estonia has a vibrant and growing sauna industry. They're known for innovative design, modern manufacturing, and premium sauna products at an affordable price. |
| Model | STEEL |
| Voltage | 240V 2-Line |
| Warranty | 3 |
| Current U.S. Room Range | 177-318 ft³ to 354-566 ft³, model-specific |
| Stone Requirement | STEEL: 330 lb / 10 boxes; 1 to 2-inch stones |
| Heater Dimensions | 12.6 in W x 12.6 in D x 38.4 in H |
Official HUUM US/Canada UKU 4.2 installation and operation manual. Use only after the supplied or installed hardware is verified as UKU 4.2; a controller package name or commerce SKU does not establish its hardware generation.
Official HUUM US/Canada UKU 4.1 installation and operation manual. Use only after the supplied or installed hardware is verified as UKU 4.1; a controller package name or commerce SKU does not establish its hardware generation.
Current official HUUM US installation and operation manual, verified by Sauna Marketplace on 2026-08-08. Applies to STEEL Mini 4 and STEEL 6, 9, and 11.
Current official HUUM limited warranty terms linked from HUUM's U.S. warranty page and verified by Sauna Marketplace on 2026-08-08.
Current Bathing Brands HUUM replacement-element matrix. HIVE Mini 6 uses three SP0008 2.0 kW elements; HIVE Mini 9 uses three SP0009 3.0 kW elements; HIVE Mini 11 uses three SP0010 3.5 kW elements.
Current Bathing Brands HUUM stone matrix. HIVE Mini requires 330 to 331 lb of 2 to 4-inch Stones 24, supplied as ten 33-lb boxes.
Free LTL Shipping with Lift Gate Service
HUUM STEEL is a slim floor-standing stainless-steel heater with 330 lb of stones for gentle, long-lasting steam. Choose 6, 9, or 10.5 kW for current U.S. room ranges from 177 to 566 cubic feet. UKU control and 1 to 2-inch sauna stones are required and sold separately.
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HUUM STEEL brings a large, stone-heavy heater into a clean architectural shell. Its 12.6-inch square footprint works especially well beside benches and glass while the stainless enclosure contains the stone mass.
STEEL 6 covers 177–318 ft³, STEEL 9 covers 283–460 ft³, and STEEL 11 (sold here as 10.5 kW) covers 354–566 ft³. Use the current U.S. manual for model-specific clearances, wiring, and installation.
HUUM UKU control and ten 33-lb boxes of 1–2-inch sauna stones are required and sold separately.
Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.
That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.
We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.
| Shipping CostPlease inquire if shipping outside the continental USA. | Free |
|---|---|
| KW | 10.5 KW, 6 KW, 9 KW |
| Made in | EstoniaAcross the Gulf of Finland, Estonia has a vibrant and growing sauna industry. They're known for innovative design, modern manufacturing, and premium sauna products at an affordable price. |
| Model | STEEL |
| Voltage | 240V 2-Line |
| Warranty | 3 |
| Current U.S. Room Range | 177-318 ft³ to 354-566 ft³, model-specific |
| Stone Requirement | STEEL: 330 lb / 10 boxes; 1 to 2-inch stones |
| Heater Dimensions | 12.6 in W x 12.6 in D x 38.4 in H |
Official HUUM US/Canada UKU 4.2 installation and operation manual. Use only after the supplied or installed hardware is verified as UKU 4.2; a controller package name or commerce SKU does not establish its hardware generation.
Official HUUM US/Canada UKU 4.1 installation and operation manual. Use only after the supplied or installed hardware is verified as UKU 4.1; a controller package name or commerce SKU does not establish its hardware generation.
Current official HUUM US installation and operation manual, verified by Sauna Marketplace on 2026-08-08. Applies to STEEL Mini 4 and STEEL 6, 9, and 11.
Current official HUUM limited warranty terms linked from HUUM's U.S. warranty page and verified by Sauna Marketplace on 2026-08-08.
Current Bathing Brands HUUM replacement-element matrix. HIVE Mini 6 uses three SP0008 2.0 kW elements; HIVE Mini 9 uses three SP0009 3.0 kW elements; HIVE Mini 11 uses three SP0010 3.5 kW elements.
Current Bathing Brands HUUM stone matrix. HIVE Mini requires 330 to 331 lb of 2 to 4-inch Stones 24, supplied as ten 33-lb boxes.
Free LTL Shipping with Lift Gate Service
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