{"product_id":"huum-hive-12stux-pkg-hive-series-12-0kw-sauna-heater-package","title":"HUUM HIVE 12STUX Pkg HIVE Series 12.0kW Sauna Heater Package","description":"\u003cp\u003e\u003c!-- HUUM HIVE 12STUX Package - 12kW Complete Floor-Standing Sauna Heater Package --\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/0C2Nz-_r2pQ?si=rIi3_oFtSaSlCWJ0\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/h2\u003e\n\u003ch2\u003eHUUM HIVE 12STUX Pkg HIVE Series 12.0kW Sauna Heater Package\u003c\/h2\u003e\n\u003c!-- Floor-standing | 240V\/1PH | 424-636 cu ft | Complete - control + UKU Ext Box + 528 lbs stones --\u003e\u003c!-- SKU: 534-BDL-HIVE12STULB-WDX | HIVE Series | UKU Local w\/Wood Case or UKU WiFi at checkout --\u003e\u003c!-- X in model name = UKU Extension Box included | Air tunnel pre-installed | Ships on pallet --\u003e\u003c!-- 5-year warranty (elements excluded) | SGS Listed | Made in Estonia --\u003e\u003c!-- 9 document sections matching DROP series format --\u003e\n\u003cstyle\u003e\n  .sl { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 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left: 4px; top: 16px; width: 7px; height: 7px; border-radius: 50%; background: #2563a8; }\n  .sl-check li strong { color: #0f172a !important; font-weight: 700; }\n  .sl-notice { background: #eff6ff; border: 1px solid #bfd4ef; border-radius: 6px; padding: 0.9rem 1.1rem; margin-bottom: 1.5rem; font-weight: 500 !important; color: #1e3a5f !important; line-height: 1.6 !important; font-size: 14px; }\n  .sl-notice-green { background: #f0fdf4; border: 1px solid #86efac; border-radius: 6px; padding: 0.9rem 1.1rem; margin-bottom: 1.5rem; font-weight: 500 !important; color: #14532d !important; line-height: 1.6 !important; font-size: 14px; }\n  .sl-notice-yellow { background: #fffbeb; border: 1px solid #fcd34d; border-radius: 6px; padding: 0.9rem 1.1rem; margin-bottom: 1.5rem; font-weight: 500 !important; color: #78350f !important; line-height: 1.6 !important; font-size: 14px; }\n  .sl-warranty { background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 6px; padding: 1.25rem 1.5rem; }\n  .sl-warranty p { font-weight: 500 !important; color: #0f172a !important; line-height: 1.7 !important; margin: 0; }\n  .sl-manual { background: #fff; border: 1px solid #e2e8f0; border-radius: 6px; padding: 1.25rem 1.5rem; margin-bottom: 1.5rem; }\n  .sl-manual-item { margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid #e2e8f0; }\n  .sl-manual-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }\n  .sl-manual-item h6 { font-size: 14px; font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.5rem; }\n  .sl-doc-link { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: #4a5568; background: #fff; border: 1px solid #d1d5db; border-radius: 5px; padding: 8px 14px; text-decoration: none; }\n  .sl-doc-link:hover { background: #e8f0fa; border-color: #bfd4ef; color: #2563a8; }\n  .sl-divider { border: none; border-top: 1px solid #e2e8f0; margin: 1.75rem 0; }\n  @media (max-width: 768px) {\n    .sl-feat-grid { grid-template-columns: 1fr 1fr; }\n    .sl-spec-grid { grid-template-columns: 1fr; gap: 1.5rem; }\n    .sl-brand1, .sl-brand2 { grid-template-columns: 1fr; gap: 1rem; padding: 1rem 0; }\n    .sl-brand2 { display: flex; flex-direction: column-reverse; }\n    .sl-brand1 h4, .sl-brand2 h4 { font-size: 18px !important; }\n  }\n  @media (max-width: 480px) {\n    .sl { padding: 0; }\n    .sl-feat-grid { grid-template-columns: 1fr; gap: 8px; }\n    .sl-feat { padding: 0.8rem 0.9rem; }\n    .sl-inc-grid { grid-template-columns: 1fr; }\n    .sl-spec-grid { gap: 1.25rem; }\n    .sl-spec-table, .sl-spec-table tbody, .sl-spec-table tr, .sl-spec-table td { display: block; width: 100%; }\n    .sl-spec-table { border: none; }\n    .sl-spec-table tr { border: 1px solid #e2e8f0; border-radius: 6px; margin-bottom: 6px; padding: 8px 12px; background: #fff !important; }\n    .sl-spec-table tr:nth-child(odd) { background: #f8fafc !important; }\n    .sl-spec-table td { border: none; padding: 1px 0; }\n    .sl-spec-table td:first-child { font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: #64748b; width: 100%; padding-bottom: 2px; }\n    .sl-spec-table td:last-child { font-size: 15px; font-weight: 700 !important; color: #0f172a !important; width: 100%; word-wrap: break-word; overflow-wrap: break-word; }\n    .sl-divider { margin: 1.25rem 0; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"sl\"\u003e\n\u003cdiv class=\"sl-desc\"\u003e\n\u003cp\u003eThe HUUM HIVE 12STUX Package is a complete sauna heater package for large sauna rooms from 424 to 636 cubic feet, including the HIVE 12kW floor-standing heater, UKU sauna control with wood case (Local or WiFi - selected at checkout), UKU Extension Box, and 528 lbs of rounded olivine diabase sauna stones (16 boxes). The X in the model name designates that the UKU Extension Box is included - it is a required component for all HUUM heaters over 11kW and is not sold separately for this package. Everything needed to operate the HIVE 12 arrives together. The HIVE is a fundamentally different heater from HUUM's wall-mounted DROP series: it is a floor-standing unit with a beehive-inspired open cage design, a 22\" diameter cylindrical form, and a stone capacity of 528 lbs - more than four times the DROP's 122 lbs - making it the appropriate choice for the large sauna rooms that the DROP series cannot serve.\u003c\/p\u003e\n\u003ch4\u003eHIVE vs DROP - floor-standing vs wall-mounted, and why it matters for large rooms\u003c\/h4\u003e\n\u003cp\u003eThe DROP series (4.5kW through 9kW) is wall-mounted and covers rooms up to 460 cubic feet. The HIVE series begins at 12kW and covers rooms from 424 cubic feet upward - the two series overlap slightly, but the HIVE is the appropriate choice for rooms approaching and exceeding 500 cubic feet. The reason is not just output: a large sauna room requires not only more heat but more thermal mass in the stone load to sustain temperature and produce consistent steam throughout long sessions or back-to-back use with multiple bathers. The HIVE's 528-lb stone load provides thermal mass comparable to a large traditional wood-burning stove, and its open beehive cage design maximizes airflow through the stone mass for even, efficient heating. The floor-standing format means the HIVE stands directly on the sauna floor rather than being mounted to the wall, which also allows it to be partially embedded into a sauna bench for custom installations.\u003c\/p\u003e\n\u003ch4\u003eThe beehive design - open cage, maximum airflow, direct stone contact\u003c\/h4\u003e\n\u003cp\u003eThe HIVE is inspired by the form of a wild beehive - an open, structured cage of stainless steel fins that holds the stone mass while allowing air to circulate freely through the full stone volume from multiple directions simultaneously. This open cage geometry produces two outcomes: the stones are heated more evenly because air circulates through the entire mass rather than only from the heating elements at the base, and the steam produced when water is ladled is softer and more evenly distributed because the water contacts stones at multiple temperature levels within the pile rather than only the hottest stones at the top. The HIVE's pre-installed air tunnel reinforces this: it speeds up heating by approximately 25% by directing airflow more efficiently through the stone mass and also extends the life of the heating elements by reducing the thermal stress of the warm-up cycle.\u003c\/p\u003e\n\u003ch4\u003eDual 30A circuit - two separate breakers required\u003c\/h4\u003e\n\u003cp\u003eThe HIVE 12kW requires two separate 30A circuit breakers and two runs of 10 AWG wire - a dual-circuit electrical installation that differs from the single-circuit requirements of the DROP series. Total draw is 50A across the two circuits. The UKU Extension Box (included in this package) is the component that manages this dual-circuit configuration and connects the two heater groups to the single UKU control panel. A licensed electrician must plan and install the dual-circuit wiring before the HIVE can be connected. The UKU Extension Box dimensions are 7\"W x 4\"D x 10\"H (178 x 101 x 254 mm) and it mounts on the wall outside the sauna room.\u003c\/p\u003e\n\u003ch4\u003e528 lbs of stone - pallet delivery and setup\u003c\/h4\u003e\n\u003cp\u003eThe 528 lbs of rounded olivine diabase stones included in this package (16 boxes) represent a significant weight and volume that changes the delivery and installation process from smaller heaters. The HIVE 12 package ships on a wooden pallet and requires a scheduled delivery appointment - it does not deliver as a standard parcel. The stones are loaded into the HIVE cage following the stone placement procedure shown in the Stone Placement Video in the documents section below. Correct stone placement in the HIVE is important for element life and steam quality - the Stone Requirements document provides the specifications for stone type, size, and loading pattern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-hook\"\u003eComplete 12kW floor-standing sauna heater package for large rooms from 424 to 636 cubic feet. Includes HIVE 12kW heater, UKU control with wood case (Local or WiFi - select at checkout), UKU Extension Box (required for 12kW - included), and 528 lbs of rounded olivine diabase stones (16 boxes). Beehive-inspired open cage design - maximum airflow through full stone mass. Air tunnel pre-installed - 25% faster heating, extended element life. 528 lbs stone capacity - more than 4x the DROP series. Floor-standing - stands on sauna floor or embeds into bench. Dual 30A breakers + dual 10 AWG wire required. 240V \/ 1-phase. Max 230°F. SGS Listed. Ships on wooden pallet - scheduled delivery. 5-year warranty (elements excluded). Made in Estonia by HUUM.\u003c\/div\u003e\n\u003cdiv class=\"sl-badges\"\u003e\n\u003cspan class=\"sl-badge\"\u003eComplete package - control + ext box + 528 lbs stones\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e12 kW\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e424 to 636 cu ft\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eFloor-standing - not wall-mounted\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eBeehive-inspired open cage design\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e528 lb stone capacity - 16 boxes included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eAir tunnel pre-installed - 25% faster heat-up\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUKU Extension Box included (X in model name)\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUKU Local w\/Wood Case or UKU WiFi - select at checkout\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eHUUM app - iOS and Android (WiFi variant)\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eDual 30A breakers - dual 10 AWG - 240V 1-phase\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eShips on wooden pallet - scheduled delivery\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eSGS Listed - made in Estonia\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e5-year warranty (elements excluded)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"sl-spec-grid\"\u003e\n\u003cdiv class=\"sl-spec-tables\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower output\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e240V \/ 1-phase \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal amperage draw\u003c\/td\u003e\n\u003ctd\u003e50 A (25A per circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit breakers required\u003c\/td\u003e\n\u003ctd\u003eTwo separate 30A breakers (no GFI\/GFCI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire gauge\u003c\/td\u003e\n\u003ctd\u003eTwo runs of 10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Extension Box\u003c\/td\u003e\n\u003ctd\u003eRequired - included in this package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eSGS Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eRoom sizing and stones\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoom volume\u003c\/td\u003e\n\u003ctd\u003e424 to 636 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone capacity\u003c\/td\u003e\n\u003ctd\u003e528 lbs (16 boxes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStones included\u003c\/td\u003e\n\u003ctd\u003eYes - 16 boxes rounded olivine diabase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone size\u003c\/td\u003e\n\u003ctd\u003e2\" to 4\" (5-10 cm) rounded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax temperature\u003c\/td\u003e\n\u003ctd\u003e230°F (110°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003ePhysical\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e22\" (560 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e29.5\" (750 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater weight\u003c\/td\u003e\n\u003ctd\u003e44.1 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eStainless steel open cage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eFloor-standing (or bench-embedded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAir tunnel\u003c\/td\u003e\n\u003ctd\u003ePre-installed - 25% faster heat-up, extended element life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMade in Estonia by HUUM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-image\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eControl options - select at checkout\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Local w\/Wood Case\u003c\/td\u003e\n\u003ctd\u003eDigital control with thermo-ash wood enclosure - on-site\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU WiFi\u003c\/td\u003e\n\u003ctd\u003eAdds HUUM app remote preheat and scheduling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eHUUM app - iOS and Android (WiFi variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Extension Box\u003c\/td\u003e\n\u003ctd\u003eRequired and included - 7\"W x 4\"D x 10\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eHIVE vs DROP comparison\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIVE 12kW (this listing)\u003c\/td\u003e\n\u003ctd\u003eFloor-standing | 424-636 cu ft | 528 lbs stones | Dual 30A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDROP 9kW (largest DROP)\u003c\/td\u003e\n\u003ctd\u003eWall-mounted | 318-460 cu ft | 122 lbs stones | Single 50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone capacity\u003c\/td\u003e\n\u003ctd\u003eHIVE carries 4x more stone mass than DROP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Extension Box\u003c\/td\u003e\n\u003ctd\u003eRequired for HIVE (12kW+) | Not required for DROP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eDelivery and warranty\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery method\u003c\/td\u003e\n\u003ctd\u003eFreight on wooden pallet - scheduled appointment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (elements excluded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign inspiration\u003c\/td\u003e\n\u003ctd\u003eWild beehive - open cage form\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cdiv class=\"sl-inc-grid\"\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eHUUM HIVE 12kW floor-standing sauna heater - stainless steel open cage\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eUKU sauna control with wood case (Local or WiFi - selected at checkout)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eUKU Extension Box (required for 12kW - included)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eRounded olivine diabase sauna stones - 16 boxes (528 lbs)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eAir tunnel (pre-installed on heater)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eInstallation and operation manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 1rem; font-weight: 500; color: #64748b; font-size: 14px;\"\u003e\u003cstrong\u003eOptional accessories (sold separately):\u003c\/strong\u003e HUUM HIVE safety railing (recommended), reflector panels (allow closer wall installation), HIVE embedding flange (for bench mounting). A licensed electrician is required for all electrical connections.\u003c\/p\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhy the HUUM HIVE 12STUX Package stands out\u003c\/h3\u003e\n\u003cdiv class=\"sl-feat-grid\"\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003e528 lbs of stone - massive thermal mass\u003c\/div\u003e\n\u003cp\u003eAt 528 lbs (16 boxes), the HIVE 12 carries more than four times the stone mass of HUUM's DROP series. This thermal mass is what enables the HIVE to sustain consistent temperature and steam quality through long sessions and back-to-back use - the stone load stores enough heat to continue producing soft, even steam long after the elements have cycled. For rooms from 424 to 636 cu ft and any commercial or high-intensity use, this thermal mass is the correct specification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eOpen beehive cage - airflow through the full stone mass\u003c\/div\u003e\n\u003cp\u003eThe open stainless steel cage allows air to circulate through the entire 528-lb stone load from multiple directions simultaneously. Stones throughout the pile - not just those adjacent to the elements - are heated evenly. When water is ladled, it contacts stones at multiple temperature levels, producing a softer, more layered steam than a heater where only the top-surface stones are ladled. The beehive cage geometry is the engineering that makes this possible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eAir tunnel pre-installed - 25% faster heat-up, longer element life\u003c\/div\u003e\n\u003cp\u003eThe HIVE air tunnel directs airflow more efficiently through the stone mass during the warm-up cycle, reducing the time to reach bathing temperature by approximately 25% and reducing the thermal stress on the heating elements. The tunnel is pre-installed on the heater in this package - no separate installation required. It also means the effective stone load with the air tunnel in place is optimized for the 424-636 cu ft room range specified for this package.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eUKU Extension Box included - the X in 12STUX\u003c\/div\u003e\n\u003cp\u003eThe X in the model name designates that the UKU Extension Box is included. This component is required for all HUUM heaters over 11kW and manages the dual-circuit electrical connection between the two 30A breakers and the single UKU control panel. Without it, the HIVE 12 cannot be connected to any UKU control. Including it in the package removes the need for a separate purchase and ensures all required components arrive together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eUKU Local w\/Wood Case or WiFi - select at checkout\u003c\/div\u003e\n\u003cp\u003eThe standard UKU Local w\/Wood Case is a digital control in a thermo-ash wood enclosure that complements the natural aesthetics of a timber sauna interior. Upgrading to UKU WiFi adds HUUM app remote preheat and scheduling on iOS and Android. For a large 424-636 cu ft sauna room that takes 45-60 minutes to reach temperature, remote preheat via the WiFi option is especially practical - start the session from the app before leaving for the sauna.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eFloor-standing with bench-embedding option\u003c\/div\u003e\n\u003cp\u003eThe HIVE 12 stands directly on the sauna floor without wall mounting hardware - installation is simpler in that respect, though the dual-circuit electrical requirement must be planned. The HIVE embedding flange (sold separately) allows the heater to be partially inserted into a sauna bench for custom installations where the stove sits flush with the bench level. The optional reflector panels allow the heater to be installed closer to the sauna wall than standard safety clearances.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eAbout HUUM\u003c\/h3\u003e\n\u003cdiv class=\"sl-brand1\"\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2024-07\/huum-hive-sauna-heater-package.jpg\" alt=\"HUUM HIVE 12kW floor-standing sauna heater package with UKU control wood case, extension box, and 528 lbs olivine stones\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eMade in Estonia - SGS Listed\u003c\/span\u003e\n\u003ch4\u003eHUUM HIVE 12STUX. 12kW. 424-636 cu ft. 528 lbs of stone. The complete large-sauna package.\u003c\/h4\u003e\n\u003cp\u003eHUUM is an Estonian sauna heater company. The HIVE is HUUM's floor-standing heater series, designed for large sauna rooms and commercial installations where the DROP series's wall-mounted format and stone capacity are insufficient. The HIVE 12STUX Package includes every required component: the HIVE 12kW heater with pre-installed air tunnel, UKU control with wood case (Local or WiFi at checkout), UKU Extension Box, and 528 lbs of rounded olivine diabase stones in 16 boxes. Everything arrives on a wooden pallet via scheduled freight delivery. A licensed electrician is required for the dual-circuit electrical installation. We are an authorized HUUM dealer.\u003c\/p\u003e\n\u003cul class=\"sl-check\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete package\u003c\/strong\u003e - HIVE 12kW, UKU control w\/wood case, UKU Ext Box, 528 lbs stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12kW, 424-636 cu ft\u003c\/strong\u003e - dual 30A breakers, dual 10 AWG, 240V\/1PH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e528 lb stone capacity\u003c\/strong\u003e - 4x the DROP series - massive thermal mass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir tunnel pre-installed\u003c\/strong\u003e - 25% faster heat-up, extended element life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePallet delivery, scheduled appointment\u003c\/strong\u003e - 5-year warranty (elements excluded)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-brand2\" style=\"text-align: start;\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eHIVE vs DROP - choosing the right HUUM series\u003c\/span\u003e\n\u003ch4\u003eWhen to choose the HIVE over the DROP\u003c\/h4\u003e\n\u003cp\u003eThe DROP series (4.5kW through 9kW, wall-mounted, 122 lbs stones) covers sauna rooms up to 460 cubic feet on single-circuit electrical installations. The HIVE series (12kW and above, floor-standing, 528 lbs stones) begins at 424 cu ft and is designed for rooms where the DROP series cannot provide sufficient output or thermal mass. The overlap between 424 and 460 cu ft is where the choice matters most: a 450 cu ft room with standard wood walls and no cold surfaces can be served by either the DROP 9 or the HIVE 12. For that room, the DROP 9 is simpler to install and requires less electrical work; the HIVE 12 provides significantly more thermal mass and will sustain temperature better through back-to-back sessions. For rooms with glass, tile, or masonry cold surfaces, for commercial use, or for rooms above 460 cu ft, the HIVE 12 is the appropriate choice without ambiguity.\u003c\/p\u003e\n\u003cp\u003eLicensed electrician required. Two separate 30A breakers and two 10 AWG wire runs required. No GFI\/GFCI. The HIVE safety railing is recommended. Reflector panels allow closer wall installation. The HIVE embedding flange enables bench installation. All accessories sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/mediriser.com\/cdn\/shop\/files\/ai_heater-package_huum-mobile-app.jpg?v=1778943360\u0026amp;width=800\" alt=\"HUUM HIVE 12kW installed in large sauna room showing floor-standing beehive cage with stone mass visible\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eManuals and Documents\u003c\/h3\u003e\n\u003cdiv class=\"sl-manual\"\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eHIVE Installation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-11\/HUUM-HIVE-Sauna-Heater-IOM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e HIVE Installation and Operation Manual (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eHIVE Elements Required\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2022-03\/HUUM%20Elements%20Required.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e HIVE Elements Required (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eUKU Installation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-12\/HUUM-UKU-Control-IOM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e UKU Installation and Operation Manual (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eUKU Installation Diagram\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-05\/HUUM-UKU-Installation-Diagram.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e UKU Installation Diagram (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eWarranty\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-09\/HUUM-Warranty.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Warranty Information (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eStone Requirements\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-12\/-HUUM-Stone-Requirements.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Stone Requirements (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cdiv class=\"sl-warranty\"\u003e\n\u003ch5\u003e5-year limited warranty (elements excluded)\u003c\/h5\u003e\n\u003cp\u003eThe HUUM HIVE 12STUX Package is covered by HUUM's \u003cstrong\u003e5-year limited warranty\u003c\/strong\u003e from the date of purchase. The warranty covers defects in manufacturing and materials under normal use conditions. Heating elements are excluded from the 5-year coverage and carry their own separate warranty period. The warranty does not cover damage caused by improper installation, incorrect dual-circuit wiring, use of incorrect or non-approved stones, operating the heater without the required stone load, or failure to follow HUUM's installation and operating guidelines. A licensed electrician is required for all electrical connections. Do not connect to GFI\/GFCI breakers. Proof of purchase from an authorized HUUM dealer is required. We are an authorized HUUM dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local Black","offer_id":52248072716570,"sku":"534-BDL-HIVE12STULBX","price":5963.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case","offer_id":52248072749338,"sku":"534-BDL-HIVE12STULB-WDX","price":6276.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/White Case","offer_id":52248072782106,"sku":"534-BDL-HIVE12STULB-WHX","price":6043.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black","offer_id":52248072814874,"sku":"534-BDL-HIVE12STUWBX","price":6225.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case","offer_id":52248072847642,"sku":"534-BDL-HIVE12STUWBX","price":6225.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/White Case","offer_id":52248072880410,"sku":"534-BDL-HIVE12STUWB-WHX","price":6305.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Glass","offer_id":52248072913178,"sku":"534-BDL-HIVE12STUWGX","price":6625.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Mirror","offer_id":52248072945946,"sku":"534-BDL-HIVE12STUWMRX","price":6888.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Gold","offer_id":52248072978714,"sku":"534-BDL-HIVE12STUWGDX","price":6400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/1690\/0634\/files\/huum-hive-sauna-heater-package.jpg?v=1778943349","url":"https:\/\/mediriser.com\/products\/huum-hive-12stux-pkg-hive-series-12-0kw-sauna-heater-package","provider":"Mediriser","version":"1.0","type":"link"}