{"product_id":"huum-core-thermo-aspen-pkg-core-series-sauna-heater-package-thermo-aspen-wood-exterior-up-to-10-5kw","title":"HUUM CORE Thermo-Aspen Pkg CORE Series Sauna Heater Package, Thermo-Aspen Wood Exterior, Up to 10.5kW","description":"\u003c!-- HUUM CORE Thermo-Aspen Pkg - Thermo-Aspen Wood Exterior, Up to 10.5kW --\u003e\u003c!-- Floor-standing | 240V\/1PH | Up to 566 cu ft | Complete package - UKU Local Black + stones included --\u003e\u003c!-- SKU: 129636 | CORE Series | Pre-fitted thermo-aspen wood side panels --\u003e\n\u003cstyle\u003e\n  .sl { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #1a2a3a; max-width: 900px; margin: 0 auto; line-height: 1.6; }\n  .sl * { box-sizing: border-box; }\n  .sl h4 { font-weight: 700 !important; color: #0f172a !important; margin: 1.5rem 0 0.5rem; line-height: 1.3; }\n  .sl h5 { font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.5rem; line-height: 1.3; }\n  .sl-hook { font-weight: 500 !important; 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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\u003eHUUM CORE Thermo-Aspen Pkg CORE Series Sauna Heater Package, Thermo-Aspen Wood Exterior, Up to 10.5kW\u003c\/h2\u003e\n\u003cp\u003eThe HUUM CORE Thermo-Aspen Package is the premium wood version of the CORE - the same stainless steel frame and full CORE performance as the Black, BK\/ST, and Alder, with pre-fitted thermo-aspen wood side panels that ship as part of the heater. Thermo-aspen is aspen wood that has been heat-treated at high temperature in an oxygen-reduced environment. This thermal modification process alters the wood at a cellular level: it darkens the tone from aspen's natural pale cream to a warm rich brown, substantially increases dimensional stability under humidity cycling, reduces moisture absorption, and extends the wood's durability in high-heat, high-humidity environments such as a sauna. The result is a wood that looks more like aged hardwood or teak than fresh aspen, ages more gracefully in sauna conditions, and is more resistant to the warping and checking that untreated wood can develop over years of repeated heating and cooling cycles. The package includes the CORE Thermo-Aspen heater, UKU Local Black control, and sauna stones, in all three output levels selected at checkout.\u003c\/p\u003e\n\u003ch4\u003eThermo-aspen vs standard alder - what thermal modification changes\u003c\/h4\u003e\n\u003cp\u003eComparing the CORE Alder and CORE Thermo-Aspen is a comparison between two different wood species and processing methods. Alder is a pale-brown softwood used in Nordic sauna construction for generations - it is light, naturally stable enough for sauna use, and has a warm soft-grain appearance. Thermo-aspen starts as aspen (a lighter, finer-grained wood than alder) and is then heat-treated to change its properties. The thermal modification reduces the wood's equilibrium moisture content, which means it takes on and releases moisture more slowly during the heat cycles of sauna use - reducing dimensional movement and the surface checking that moisture cycling produces. The colour shifts to a richer warm brown that reads as more premium than either natural alder or natural aspen. Thermo-aspen is the more durable and visually refined of the two wood options on the CORE. Both are appropriate for sauna environments; thermo-aspen is the choice for buyers who want the longest-lasting wood finish with the deepest tone.\u003c\/p\u003e\n\u003ch4\u003ePre-fitted panels - installs as a finished product\u003c\/h4\u003e\n\u003cp\u003eLike the CORE Alder, the Thermo-Aspen model arrives with the wood side panels already installed on the stainless steel frame by HUUM's factory. No fabrication work, no panel installation, no adhesive. The thermo-aspen panels cover the visible side faces of the heater while the stainless top rim with its selected inlay finish remains exposed. The combination of the rich dark-brown thermo-aspen wood and the stainless metal inlay produces a premium appearance that pairs well with thermally modified wood benches and walls, dark cedar, and any sauna interior where a refined, aged-wood aesthetic is the design goal. In lighter natural wood saunas, the darker thermo-aspen creates a deliberate material contrast rather than blending into the background.\u003c\/p\u003e\n\u003ch4\u003eSame CORE performance in every dimension\u003c\/h4\u003e\n\u003cp\u003eThe CORE Thermo-Aspen is technically identical to the CORE Black, BK\/ST, and Alder in every specification. Same three output levels (6.5kW, 9kW, 10.5kW), same 32.7\"H x 15.2\"W x 15.2\"D dimensions, same 42-lb heater weight, same 66-lb stone capacity, same 2-inch safety clearance from combustible materials on all sides, same full bench embedding option, same 230°F maximum temperature, and same 3-year private warranty. The thermo-aspen panels are a surface treatment on the stainless frame - no technical specification changes between this and any other CORE package variant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-hook\"\u003eComplete floor-standing sauna heater package with pre-fitted thermo-aspen wood side panels in three output levels: 6.5kW (177-318 cu ft), 9kW (283-460 cu ft), 10.5kW (354-566 cu ft) - select at checkout. Includes CORE Thermo-Aspen heater (thermo-aspen panels factory fitted, inlay finish selected at checkout), UKU Local Black control, and sauna stones. Thermo-aspen: heat-treated aspen - richer dark-brown tone, enhanced moisture stability, longer-lasting than natural wood in sauna conditions. All three variants: 32.7\"H x 15.2\"W x 15.2\"D, 42 lbs, 66 lb stone capacity. 2\" safety clearance all sides. Full bench integration permitted. Max temperature 230°F. IPX4 rated. 240V \/ 1-phase. 6.5kW: 30A \/ 10 AWG. 9kW or 10.5kW: 50A \/ 8 AWG. Made in Estonia by HUUM. 3-year private \/ 1-year commercial warranty.\u003c\/div\u003e\n\u003cdiv class=\"sl-badges\"\u003e\n\u003cspan class=\"sl-badge\"\u003eComplete package - control + stones included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e6.5kW \/ 9kW \/ 10.5kW - select at checkout\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003ePre-fitted thermo-aspen wood side panels\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eHeat-treated - richer tone, enhanced durability\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eInlay finish selected at checkout\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eNo fabrication work required\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e2\" safety clearance all sides\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eFull bench integration permitted\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e66 lb stone capacity\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eMax temperature 230°F\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUKU Local Black control included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eCompact 15.2\" x 15.2\" square footprint\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eIPX4 wet area rated\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eMade in Estonia\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e3-year private warranty\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\u003eOutput selection - choose at checkout\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.5kW\u003c\/td\u003e\n\u003ctd\u003e177 to 318 cu ft | 30A breaker | 10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9kW\u003c\/td\u003e\n\u003ctd\u003e283 to 460 cu ft | 50A breaker | 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.5kW\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu ft | 50A breaker | 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage (all)\u003c\/td\u003e\n\u003ctd\u003e240V \/ 1-phase \/ 60 Hz\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\u003eDimensions and weight (all variants identical)\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e32.7\" (830 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e15.2\" (385 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e15.2\" (385 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e42 lbs (19 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eFloor-standing - sidewall, corner, or bench embedded\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\u003eExterior and stones\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide panels\u003c\/td\u003e\n\u003ctd\u003eThermo-aspen wood - pre-fitted at factory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermo-aspen treatment\u003c\/td\u003e\n\u003ctd\u003eHeat-treated - darker tone, enhanced moisture stability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlay finish\u003c\/td\u003e\n\u003ctd\u003eSelected at checkout (Black default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop rim\u003c\/td\u003e\n\u003ctd\u003eStainless steel with inlay finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone capacity\u003c\/td\u003e\n\u003ctd\u003e66 lbs (30 kg) - all variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone size\u003c\/td\u003e\n\u003ctd\u003e5-10 cm (2-4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStones included\u003c\/td\u003e\n\u003ctd\u003eYes - 2 boxes included in package\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\u003eSafety distances (all variants identical)\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll sides - combustible materials\u003c\/td\u003e\n\u003ctd\u003e2\" (50 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCeiling clearance\u003c\/td\u003e\n\u003ctd\u003e32.7\" (830 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBench integration\u003c\/td\u003e\n\u003ctd\u003ePermitted - full-length embedding in bench\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\u003eControl and performance\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl included\u003c\/td\u003e\n\u003ctd\u003eUKU Local Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi capability\u003c\/td\u003e\n\u003ctd\u003eNo - upgrade to UKU WiFi sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e104°F to 230°F (40°C to 110°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP rating\u003c\/td\u003e\n\u003ctd\u003eIPX4 - wet area approved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHUUM app\u003c\/td\u003e\n\u003ctd\u003eCompatible with UKU WiFi upgrade\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\u003eConstruction and warranty\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide panels\u003c\/td\u003e\n\u003ctd\u003eThermo-aspen wood - factory fitted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrivate use warranty\u003c\/td\u003e\n\u003ctd\u003e3 years (elements excluded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommercial warranty\u003c\/td\u003e\n\u003ctd\u003e1 year (elements excluded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eDesigned and made 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\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 CORE Thermo-Aspen heater with pre-fitted thermo-aspen panels (output and inlay finish selected at checkout)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eUKU Local Black control panel\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eSauna stones - 2 boxes (66 lbs total)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eAdjustable leveling legs (4)\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 upgrades:\u003c\/strong\u003e UKU WiFi control panel, UKU Glass panel. HUUM also offers CORE panels in alder and aspen as alternative wood finishes.\u003c\/p\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhy the HUUM CORE Thermo-Aspen 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\"\u003eThermo-aspen - the premium wood option\u003c\/div\u003e\n\u003cp\u003eHeat-treated aspen with a richer dark-brown tone than natural alder or aspen. Thermal modification reduces moisture absorption and dimensional movement in sauna conditions, making thermo-aspen more stable and longer-lasting than untreated wood over years of repeated heating and cooling cycles. The panels arrive pre-fitted - no fabrication work needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eDarker tone for refined interiors\u003c\/div\u003e\n\u003cp\u003eThermo-aspen's warm rich brown reads as a premium material alongside thermally modified wood benches, dark cedar, and contemporary design palettes where natural light wood would look too soft. It is the wood choice for sauna rooms that call for a darker, more aged-wood aesthetic rather than the pale freshness of alder.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eEnhanced moisture stability\u003c\/div\u003e\n\u003cp\u003eThe thermal modification process reduces the wood's equilibrium moisture content - it takes on and releases moisture more slowly during sauna heat cycles. This reduces the surface checking, warping, and cracking that untreated wood can develop over years of use in a high-humidity, high-temperature environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eSame CORE performance as all other variants\u003c\/div\u003e\n\u003cp\u003eTechnically identical to the CORE Black, BK\/ST, and Alder - same 32.7\"H x 15.2\"W x 15.2\"D, same 66-lb stone capacity, same 2-inch safety clearance, same bench embedding option, same 230°F maximum temperature. The thermo-aspen panels are a surface finish on the stainless frame, not a structural change.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003e2\" clearance and bench integration\u003c\/div\u003e\n\u003cp\u003eThe thermo-aspen wood panels do not increase the safety clearance requirement. Only 2 inches required from combustible materials on all sides. Full bench embedding permitted with the panels in place - the thermo-aspen surface at bench level creates a seamless wood material connection between the heater and bench structure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eComplete package - ready to install\u003c\/div\u003e\n\u003cp\u003eHeater with thermo-aspen panels, UKU Local Black control, and 2 boxes of stones. The only remaining steps are selecting output and inlay finish at checkout, and the electrical connection by a licensed electrician. No wood sourcing, no panel installation, no custom fabrication.\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\/2025-12\/HUUM-CORE-Sauna-Heater-Package-Thermo-Aspen-Black-Local-Black.jpg\" alt=\"HUUM CORE Thermo-Aspen sauna heater package showing pre-fitted dark thermo-aspen wood panels with stainless frame and UKU Local Black control\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eMade in Estonia - award-winning design\u003c\/span\u003e\n\u003ch4\u003eHUUM CORE Thermo-Aspen. The CORE with the premium wood finish for refined sauna interiors.\u003c\/h4\u003e\n\u003cp\u003eHUUM is an Estonian sauna heater manufacturer. The CORE Thermo-Aspen is the premium wood version of the CORE series - the same stainless steel structure, CORE performance, and UKU control compatibility as every other CORE package, with thermo-aspen wood side panels that arrive pre-fitted and require no installation work. Thermo-aspen is the most durable and visually refined wood option in the CORE range - darker, more stable in sauna conditions, and more distinctive than natural alder or standard aspen. For sauna builders who want a natural wood heater finish at the premium end of the wood spectrum, the Thermo-Aspen is the correct choice.\u003c\/p\u003e\n\u003cul class=\"sl-check\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-fitted thermo-aspen panels\u003c\/strong\u003e - heat-treated, darker tone, enhanced moisture stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentical specs to CORE Black\u003c\/strong\u003e - same output, dimensions, performance, warranty\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2\" safety clearance, bench embedding, 230°F max\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete package\u003c\/strong\u003e - UKU Local Black and 2 boxes stones included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSGS Listed, made in Estonia\u003c\/strong\u003e - 3-year private \/ 1-year commercial warranty\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\"\u003eAlder vs Thermo-Aspen - choosing the wood finish\u003c\/span\u003e\n\u003ch4\u003eCORE Alder vs CORE Thermo-Aspen - tone, durability, and design intent\u003c\/h4\u003e\n\u003cp\u003eBoth the Alder and Thermo-Aspen packages arrive with factory-fitted wood panels, identical technical specifications, and the same complete package contents. The difference is the wood species and its treatment. Alder is a pale warm-brown, natural, and light-grained - it integrates softly into traditional Nordic sauna rooms with aspen or spruce walls and light bench surfaces. Thermo-aspen is a richer dark warm-brown, heat-treated for enhanced stability, and more visually distinctive - it pairs with thermally modified wood benches, dark cedar, and refined contemporary sauna interiors where a deeper wood tone is part of the design intent. Both are appropriate for sauna use; thermo-aspen is the more durable finish with the more premium appearance.\u003c\/p\u003e\n\u003cp\u003eA standard 2-pole breaker (30A for 6.5kW, 50A for 9kW and 10.5kW) and appropriate AWG wire are required. Do not connect to a GFI\/GFCI breaker. A licensed electrician is required for all connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/mediriser.com\/cdn\/shop\/files\/HUUM-CORE-Sauna-Heater-Package-Thermo-Aspen-Stainless-Wifi-Wood.jpg?v=1779012239\u0026amp;width=800\" alt=\"HUUM CORE Thermo-Aspen heater with dark thermo-aspen panels installed in sauna room alongside thermally modified bench\" 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\u003eInstallation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-12\/HUUM-CORE-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 HUUM CORE User Manual US - 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=\"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 Warranty Information (huumsauna.com) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eElement Requirements\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 Element Requirements \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 \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 1-2-2h12a2 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 Size Your Sauna \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\u003e3-year private warranty \/ 1-year commercial warranty (elements excluded)\u003c\/h5\u003e\n\u003cp\u003eThe HUUM CORE Thermo-Aspen is covered by a \u003cstrong\u003e3-year limited warranty for private (residential) use\u003c\/strong\u003e and a \u003cstrong\u003e1-year limited warranty for commercial use\u003c\/strong\u003e from the date of purchase. Heating elements are excluded from warranty coverage. The warranty covers defects in manufacturing and materials - including the thermo-aspen wood panels - under normal use conditions. The warranty is void if: the heater is connected to a GFI\/GFCI breaker, the buyer fails to follow the installation and operation manual, incorrect or insufficient stones are used, or the product is damaged by failure to follow instructions. Proof of purchase from an authorized HUUM dealer is required for warranty claims. We are an authorized HUUM dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local Black \/ Black \/ 6.5kW","offer_id":52229642649882,"sku":"129636","price":4164.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local Black \/ Black \/ 9kW","offer_id":52229643108634,"sku":"129650","price":4284.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local Black \/ Black \/ 10.5kW","offer_id":52229643141402,"sku":"129664","price":4419.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local Black \/ Stainless Steel \/ 6.5kW","offer_id":52229643174170,"sku":"129629","price":4164.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local Black \/ Stainless Steel \/ 9kW","offer_id":52229643206938,"sku":"129643","price":4284.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local Black \/ Stainless Steel \/ 10.5kW","offer_id":52229643239706,"sku":"129657","price":4419.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Black \/ 6.5kW","offer_id":52229642682650,"sku":"129637","price":4477.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Black \/ 9kW","offer_id":52229643272474,"sku":"129651","price":4597.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Black \/ 10.5kW","offer_id":52229643305242,"sku":"129665","price":4732.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Stainless Steel \/ 6.5kW","offer_id":52229643338010,"sku":"129630","price":4477.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Stainless Steel \/ 9kW","offer_id":52229643370778,"sku":"129644","price":4597.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case \/ Stainless Steel \/ 10.5kW","offer_id":52229643403546,"sku":"129658","price":4732.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Black \/ 6.5kW","offer_id":52229642715418,"sku":"129638","price":4426.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Black \/ 9kW","offer_id":52229643436314,"sku":"129652","price":4546.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Black \/ 10.5kW","offer_id":52229643469082,"sku":"129666","price":4681.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Stainless Steel \/ 6.5kW","offer_id":52229643501850,"sku":"129659","price":4426.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Stainless Steel \/ 9kW","offer_id":52229643534618,"sku":"129631","price":4546.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black \/ Stainless Steel \/ 10.5kW","offer_id":52229643567386,"sku":"129659","price":4681.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Black \/ 6.5kW","offer_id":52229642748186,"sku":"129639","price":4739.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Black \/ 9kW","offer_id":52229643600154,"sku":"129653","price":4859.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Black \/ 10.5kW","offer_id":52229643632922,"sku":"129667","price":4994.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Stainless Steel \/ 6.5kW","offer_id":52229643665690,"sku":"129632","price":4739.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Stainless Steel \/ 9kW","offer_id":52229643698458,"sku":"129646","price":4859.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case \/ Stainless Steel \/ 10.5kW","offer_id":52229643731226,"sku":"129660","price":4994.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Glass \/ Black \/ 6.5kW","offer_id":52229642780954,"sku":"129641","price":4926.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Glass \/ Black \/ 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