{"product_id":"huum-hive-15stux-pkg-hive-series-15-0kw-sauna-heater-package","title":"HUUM HIVE 15STUX Pkg HIVE Series 15.0kW Sauna Heater Package","description":"\u003c!-- HUUM HIVE 15STUX Package - 15kW Complete Floor-Standing Sauna Heater Package --\u003e\u003c!-- Floor-standing | 240V\/1PH | 530-813 cu ft | Complete - control + UKU Ext Box + 528 lbs stones --\u003e\u003c!-- SKU: 534-BDL-HIVE15STULB-WDX | HIVE Series | UKU Local w\/Wood Case or UKU WiFi at checkout --\u003e\u003c!-- X = UKU Extension Box included | Air tunnel pre-installed | Ships on pallet --\u003e\u003c!-- Dual 50A breakers + dual 8 AWG (heavier than HIVE 12's dual 30A \/ 10 AWG) --\u003e\u003c!-- 5-year warranty (elements excluded) | SGS Listed | Made in Estonia --\u003e\u003c!-- 8 document sections per listing image: HIVE IOM | HIVE Elements Required | UKU IOM | UKU Diagram | UKU Video | Warranty | Stone Requirements | Size Your Sauna --\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\u003ch2 style=\"text-align: center;\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/0C2Nz-_r2pQ?si=J8Q03eKdwP0gV1Ak\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/h2\u003e\n\u003ch2\u003eHUUM HIVE 15STUX Pkg HIVE Series 15.0kW Sauna Heater Package\u003c\/h2\u003e\n\u003cp\u003eThe HUUM HIVE 15STUX Package is a complete sauna heater package for large sauna rooms from 530 to 813 cubic feet, including the HIVE 15kW 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 HIVE 15kW steps up from the 12kW with 25% more output for the same physical body and the same 528-lb stone capacity, covering the larger room range that the 12kW cannot serve. The key electrical difference from the HIVE 12: the 15kW requires dual 50A breakers and dual 8 AWG wire runs rather than the 12kW's dual 30A \/ 10 AWG - a heavier electrical specification that must be planned and confirmed before ordering.\u003c\/p\u003e\n\u003ch4\u003eHIVE 15 vs HIVE 12 - more output, heavier electrical, same body\u003c\/h4\u003e\n\u003cp\u003eAll three HIVE models - 12kW, 15kW, and 18kW - share identical external body dimensions: 22\" (560mm) diameter, 29.5\" (750mm) height. The physical footprint in the sauna room, the 528-lb stone capacity, the air tunnel, and the floor-standing installation method are the same across all three. What differs is the output level and the corresponding electrical requirement. The HIVE 12 runs on dual 30A breakers with 10 AWG wire. The HIVE 15 requires dual 50A breakers with 8 AWG wire. The HIVE 18 also uses dual 50A \/ 8 AWG. For rooms from 530 to 813 cubic feet where the HIVE 12's 424-636 cu ft range is insufficient, the HIVE 15 is the correct step up - provided the electrical panel can supply two 50A circuit breaker slots and the electrician can run two 8 AWG wire circuits to the UKU Extension Box location.\u003c\/p\u003e\n\u003ch4\u003e530-813 cu ft - large residential and commercial sauna rooms\u003c\/h4\u003e\n\u003cp\u003eThe 15kW range of 530-813 cu ft covers large residential sauna rooms, sauna cabins with multiple benches, and mid-size commercial installations in health clubs, day spas, and gyms. At 530 cubic feet, a sauna room is typically a dedicated structure rather than a converted interior room - a purpose-built sauna cabin, a detached sauna building, or a large home sauna room with two or more bench levels. At 813 cubic feet, the HIVE 15 is at the upper end of what a single 15kW heater can serve; rooms approaching this volume, or rooms with significant cold surfaces such as glass walls or tile floors, may require confirming the adjusted cubic footage before selecting between the 15kW and the 18kW. Use the HUUM heater calculator in the Size Your Sauna document below for guidance.\u003c\/p\u003e\n\u003ch4\u003e528 lbs of stone, air tunnel pre-installed - same as HIVE 12\u003c\/h4\u003e\n\u003cp\u003eThe HIVE 15 carries the same 528-lb stone capacity as the HIVE 12 in the same beehive-inspired open cage. The air tunnel is pre-installed on the heater in this package, directing airflow more efficiently through the stone mass to speed up heating by approximately 25% and extend heating element life. The 16 boxes of rounded olivine diabase stones (2\"-4\", 5-10 cm) included in this package are the correct type and quantity for the HIVE 15. As with the HIVE 12, this package ships on a wooden pallet by freight and requires a scheduled delivery appointment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-hook\"\u003eComplete 15kW floor-standing sauna heater package for large rooms from 530 to 813 cubic feet. Includes HIVE 15kW heater, UKU control with wood case (Local or WiFi - select at checkout), UKU Extension Box (required for 15kW - included), and 528 lbs of rounded olivine diabase stones (16 boxes). Same beehive-inspired open cage body as HIVE 12 and 18 - 22\" diameter x 29.5\"H. Air tunnel pre-installed - 25% faster heating, extended element life. Dual 50A breakers + dual 8 AWG wire required (heavier than HIVE 12). 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\"\u003e15 kW\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e530 to 813 cu ft\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eFloor-standing - same body as HIVE 12 and 18\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 50A breakers - dual 8 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\u003e15 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\u003e62.5 A (31.25A per circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit breakers required\u003c\/td\u003e\n\u003ctd\u003eTwo separate 50A 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 8 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\u003e530 to 813 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\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\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 series electrical comparison\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIVE 12kW\u003c\/td\u003e\n\u003ctd\u003e424-636 cu ft | Dual 30A | Dual 10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIVE 15kW (this listing)\u003c\/td\u003e\n\u003ctd\u003e530-813 cu ft | Dual 50A | Dual 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHIVE 18kW\u003c\/td\u003e\n\u003ctd\u003e636-955 cu ft | Dual 50A | Dual 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody dimensions\u003c\/td\u003e\n\u003ctd\u003eIdentical across all three HIVE models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone capacity\u003c\/td\u003e\n\u003ctd\u003e528 lbs - identical across all three\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 15kW 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 15kW - 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 15STUX 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\"\u003e15kW for 530-813 cu ft - beyond the HIVE 12 range\u003c\/div\u003e\n\u003cp\u003eThe HIVE 15kW covers rooms that the HIVE 12 cannot - from 530 to 813 cubic feet. For large dedicated sauna buildings, multi-bench sauna rooms, and commercial installations where the 12kW's 636 cu ft ceiling is insufficient, the 15kW is the appropriate next step. The 25% output increase over the 12kW translates directly to faster heat-up times and effective coverage of larger room volumes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eSame body as HIVE 12 and 18 - no size difference\u003c\/div\u003e\n\u003cp\u003eThe HIVE 15 is physically identical to the HIVE 12 and 18: same 22\" diameter, same 29.5\" height, same open beehive cage, same 528-lb stone capacity, same floor-standing footprint. The output level changes with the number of heating elements inside the cage. The installation footprint and stone loading procedure are the same regardless of which HIVE model is selected.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003e528 lbs of stone - massive sustained thermal mass\u003c\/div\u003e\n\u003cp\u003eThe same 528-lb stone load as the HIVE 12 - now driven by 15kW of output. More output heating the same stone mass means faster heat-up to bathing temperature and greater capacity to sustain that temperature through extended sessions and back-to-back use with multiple bathers. The open cage airflow ensures all 528 lbs are heated evenly, producing soft, consistent steam from the full stone volume when water is ladled.\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, longer element life\u003c\/div\u003e\n\u003cp\u003eThe HIVE air tunnel is pre-installed in every HIVE package. It directs airflow more efficiently through the stone mass during the warm-up cycle, reducing heat-up time by approximately 25% and reducing thermal stress on the heating elements. For a 15kW heater covering rooms up to 813 cu ft, faster heat-up is a meaningful operational benefit - particularly for commercial installations where sauna turnaround time matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eDual 50A \/ 8 AWG - plan the electrical carefully\u003c\/div\u003e\n\u003cp\u003eThe HIVE 15 requires two separate 50A breakers and two 8 AWG wire runs - heavier than the HIVE 12's dual 30A \/ 10 AWG. Confirm panel capacity for two 50A slots before ordering. The UKU Extension Box (included) manages the dual-circuit connection to the single UKU control. All wiring must be completed by a licensed electrician. No GFI\/GFCI breakers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eUKU WiFi - remote preheat for a large sauna\u003c\/div\u003e\n\u003cp\u003eA 530-813 cu ft sauna room requires significant warm-up time at 15kW. Upgrading to UKU WiFi at checkout enables remote preheat via the HUUM app - start the sauna from anywhere and arrive to a room already at temperature. For commercial use where sessions are scheduled in advance, the WiFi variant with app scheduling is the operationally practical choice.\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 15kW 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 15STUX. 15kW. 530-813 cu ft. 528 lbs of stone. The complete mid-range HIVE package.\u003c\/h4\u003e\n\u003cp\u003eHUUM is an Estonian sauna heater company. The HIVE 15STUX Package steps up from the HIVE 12 with 25% more output in the same body for rooms from 530 to 813 cubic feet. The package includes every required component: the HIVE 15kW 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. Delivered on a wooden pallet via scheduled freight. A licensed electrician is required for the dual-circuit 50A \/ 8 AWG 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 15kW, UKU control w\/wood case, UKU Ext Box, 528 lbs stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15kW, 530-813 cu ft\u003c\/strong\u003e - dual 50A breakers, dual 8 AWG, 240V\/1PH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame 528 lb stone capacity\u003c\/strong\u003e as HIVE 12 and 18\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 style=\"text-align: start;\" class=\"sl-brand2\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eHIVE 12 vs 15 vs 18 - choosing the right output\u003c\/span\u003e\n\u003ch4\u003eWhich HIVE output level is correct - 12kW, 15kW, or 18kW?\u003c\/h4\u003e\n\u003cp\u003eAll three HIVE models share identical body dimensions (22\" diameter, 29.5\"H), stone capacity (528 lbs), and installation method. The selection is based on room size and adjusted cubic footage. HIVE 12kW: 424-636 cu ft, dual 30A \/ 10 AWG. HIVE 15kW: 530-813 cu ft, dual 50A \/ 8 AWG. HIVE 18kW: 636-955 cu ft, dual 50A \/ 8 AWG. The 15 and 18 share the same electrical specification; the difference between them is output and room range. The 15kW overlaps with the 12kW from 530 to 636 cu ft: in this overlap zone, a well-insulated standard room may be adequately served by the 12kW at lower electrical cost, while a room with cold surfaces or high-frequency commercial use would benefit from the 15kW's additional output headroom. For rooms from 637 cu ft and above, the 15kW or 18kW is required. Use the HUUM heater calculator in the Size Your Sauna document below to verify the adjusted cubic footage of the specific sauna room before selecting the output level.\u003c\/p\u003e\n\u003cp\u003eLicensed electrician required. No GFI\/GFCI. HIVE safety railing recommended. Reflector panels and embedding flange sold separately. All three HIVE models deliver on wooden pallet with scheduled freight appointment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg style=\"margin-bottom: 16px; float: none;\" 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 15kW installed in large commercial sauna showing same beehive cage as 12kW and 18kW models\"\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\/2025-12\/-HUUM-Element-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 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\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eSize Your Sauna\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-09\/Sizing-Your-HUUM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6\"\u003e\u003c\/path\u003e\u003cpolyline points=\"15 3 21 3 21 9\"\u003e\u003c\/polyline\u003e\u003cline y2=\"3\" x2=\"21\" y1=\"14\" x1=\"10\"\u003e\u003c\/line\u003e\u003c\/svg\u003e Size Your Sauna - HUUM Heater Calculator \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 15STUX 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":52261620744474,"sku":"534-BDL-HIVE15STULBX","price":6203.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case","offer_id":52261620777242,"sku":"534-BDL-HIVE15STULB-WDX","price":6516.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/White Case","offer_id":52261620810010,"sku":"534-BDL-HIVE15STULB-WHX","price":6283.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black","offer_id":52261620842778,"sku":"534-BDL-HIVE15STUWBX","price":6465.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case","offer_id":52261620875546,"sku":"534-BDL-HIVE15STUWB-WDX","price":6778.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/White Case","offer_id":52261620908314,"sku":"534-BDL-HIVE15STUWB-WHX","price":6545.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Gold","offer_id":52261620941082,"sku":"534-BDL-HIVE15STUWGDX","price":6640.0,"currency_code":"USD","in_stock":true},{"title":"UKU WIfi Glass","offer_id":52261620973850,"sku":"534-BDL-HIVE15STUWGX","price":6865.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Mirror","offer_id":52261621006618,"sku":"534-BDL-HIVE15STUWMRX","price":7128.0,"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-15stux-pkg-hive-series-15-0kw-sauna-heater-package","provider":"Mediriser","version":"1.0","type":"link"}