{"product_id":"thermasol-spectra-3-4-person-outdoor-sauna-cabin","title":"ThermaSol Spectra 3-4 Person Outdoor Sauna Cabin","description":"\u003cstyle\u003e.tsspec{--ink:#1A1410;--body:#463C33;--mut:#54493D;--accent:#96620A;--bright:#E8A33D;--dark:#171310;--sub:#54493D;--tint:#F7F1E6;--fill:#F0E9DB;--hl:#F6E7CB;--line:#DCCFB4;--warm:#DCCFB4;--edge:#CBBBA0;--rule:#DCCFB4;--r-lg:10px;--r-sm:10px;--r-xs:999px;--gut:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--body);line-height:1.65;letter-spacing:normal;-webkit-font-smoothing:antialiased;background:#fff}.tsspec *{box-sizing:border-box}.tsspec .tsspec-c img{margin:0 !important;border:0}.tsspec .tsspec-c{max-width:1000px;margin:0 auto;padding:0 20px}.tsspec section{padding:52px 0}.tsspec section:first-of-type{padding-top:26px}.tsspec section.tsspec-tinted{background:var(--tint)}.tsspec section + section.tsspec-tinted,.tsspec section.tsspec-tinted + section{border-top:1px solid 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section:first-of-type{padding-top:20px}.tsspec h2{font-size:23px}.tsspec p.tsspec-lead{font-size:17px}.tsspec .tsspec-stat3{grid-template-columns:1fr}.tsspec .tsspec-stat3\u003ediv{border-right:0;border-bottom:1px solid rgba(255,255,255,.13)}.tsspec .tsspec-stat3\u003ediv:last-child{border-bottom:0}.tsspec .tsspec-split{grid-template-columns:1fr;gap:24px}.tsspec .tsspec-buy{grid-template-columns:1fr}.tsspec .tsspec-toc ol{grid-template-columns:1fr}}@media screen and (min-width:841px){.tsspec .tsspec-toc\u003esummary{display:none}.tsspec .tsspec-toc ol{display:grid !important}}@media screen and (max-width:560px){.tsspec .tsspec-ladder thead{position:absolute;left:-9999px}.tsspec .tsspec-ladder tr{display:block;border-bottom:1px solid var(--rule);padding:14px var(--gut)}.tsspec .tsspec-ladder tr.on{background:var(--hl)}.tsspec .tsspec-ladder td{display:block;border:0;padding:0}.tsspec .tsspec-ladder td:last-child{text-align:left;font-size:15.5px;margin-top:8px}}.tsspec .tsspec-hl td,.tsspec .tsspec-hl th,.tsspec .tsspec-ladder tr.on td,.tsspec table.tsspec-cmp td.me{border-bottom-color:var(--edge)}@media screen and (max-width:840px){.tsspec table.tsspec-cmp thead a{min-height:44px;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:2px}}.rte .tsspec table th,.rte .tsspec table td{padding:11px var(--gut)}.tsspec .tsspec-ladder th:last-child,.tsspec .tsspec-ladder td:last-child{text-align:left;white-space:normal;overflow-wrap:anywhere}.tsspec .tsspec-buy{align-items:start}.tsspec .tsspec-buy li span a{display:inline-block;padding:16px 0;margin:-16px 0}.tsspec table.tsspec-cmp td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:inset 0 -1px 0 var(--rule),1px 0 0 var(--rule)}.tsspec table.tsspec-cmp thead th:first-child{position:sticky;left:0;z-index:2;background:var(--fill)}@media screen and (max-width:560px){.tsspec .tsspec-ladder td:last-child::before{content:\"Nameplate draw:\\00a0\";font-weight:700;color:var(--ink)}}@media screen and (max-width:480px){.tsspec table.tsspec-spec th,.tsspec table.tsspec-spec td{display:block;width:auto}.tsspec table.tsspec-spec th{border-bottom:0;padding-bottom:0}}.tsspec .tsspec-vid video{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;background:var(--dark);object-fit:cover}.tsspec .tsspec-vid video:focus-visible{outline:3px solid var(--bright);outline-offset:-3px}.tsspec .tsspec-fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--edge);background:#fff}.tsspec .tsspec-fig img{width:100%;height:auto;display:block;border:0;border-radius:0;box-shadow:none;mix-blend-mode:multiply}.tsspec .tsspec-c\u003efigure{max-width:560px;margin-left:auto;margin-right:auto}\u003c\/style\u003e\n\u003cdiv class=\"tsspec\"\u003e\n\u003csection id=\"overview\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cdetails class=\"tsspec-disc\"\u003e\n  \u003csummary\u003eJump to\u003cspan class=\"tsspec-ct\"\u003e11 sections\u003c\/span\u003e\u003c\/summary\u003e\n  \u003col\u003e\n    \u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#inside\"\u003eInside the cabin\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#ready\"\u003eBefore you order\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#built\"\u003eHow it is built\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#heater\"\u003eHeater and circuit\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#costs\"\u003eRunning cost\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#crate\"\u003eWhat you get\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#siting\"\u003eDelivery and siting\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#compare\"\u003eCompare models\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"#faq\"\u003eBuyer questions\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/details\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eThe short answer\u003c\/p\u003e\n    \u003ch2\u003eThe ThermaSol Spectra is a 3 to 4 person outdoor sauna that arrives finished\u003c\/h2\u003e\n    \u003cp class=\"tsspec-lead\"\u003eFifty-one square feet of sauna, inside a cabin that lands on your pad complete. There is no shell to raise and no panels to square up. What the Spectra asks of you instead is a prepared slab, clear access for a crane or forklift, and a licensed electrician on the day.\u003c\/p\u003e\n    \u003cdiv class=\"tsspec-stat3\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"tsspec-lbl\"\u003eThe ground\u003c\/p\u003e\n        \u003cp class=\"tsspec-big\"\u003e110 × 102 in\u003c\/p\u003e\n        \u003cp\u003eThermaSol's placement clearance, which is larger than the cabin itself at 82 inches wide and 90 deep. The spec sheet recommends a minimum slab thickness of 8 inches under 2,205 pounds of assembled cabin.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"tsspec-lbl\"\u003eThe room\u003c\/p\u003e\n        \u003cp class=\"tsspec-big\"\u003e51 sq ft\u003c\/p\u003e\n        \u003cp\u003eCabin interior, for 3 to 4 people. Thermo aspen benches and backrest against Tyrol wood walls, over a high density resin composite floor.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"tsspec-lbl\"\u003eThe circuit\u003c\/p\u003e\n        \u003cp class=\"tsspec-big\"\u003e240V, 37.5 A\u003c\/p\u003e\n        \u003cp\u003eThe Harvia Virta inside it draws 37.5 amps on a 240 volt single phase supply and wants a minimum 8 AWG 90 °C copper feed. Your electrician sizes the breaker.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"tsspec-tinted\" id=\"inside\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eInside the cabin\u003c\/p\u003e\n    \u003ch2\u003eFifty-one square feet, and what ThermaSol does not tell you about it\u003c\/h2\u003e\n    \u003cp\u003eThermaSol publishes the Spectra's interior as an \u003cstrong\u003earea\u003c\/strong\u003e: 51 square feet. It does not publish interior width, depth or height for this cabin, or for any cabin in the range. If you are planning around a specific bench run or a specific headroom, that figure does not exist in any ThermaSol document we hold, and we are not going to estimate it for you. Ask us and we will put the question to ThermaSol directly.\u003c\/p\u003e\n    \u003cp\u003eWhat is published is the finish. The benches and the backrest are \u003cstrong\u003ethermo aspen\u003c\/strong\u003e, the walls are \u003cstrong\u003eTyrol wood\u003c\/strong\u003e, and the floor is a \u003cstrong\u003ehigh density resin composite\u003c\/strong\u003e rather than timber. The backrest carries a full spectrum LED strip on its own controls, separate from the cabin's integrated 110 volt lighting.\u003c\/p\u003e\n    \u003cfigure\u003e\u003cdiv class=\"tsspec-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/spectra__spectra__06.jpg?v=1791433632\u0026amp;width=1200\" alt=\"ThermaSol Spectra outdoor sauna cabin, overhead layout\" width=\"2048\" height=\"2048\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eFifty-one square feet of interior. ThermaSol publishes the area but not the linear dimensions.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eWho the 3 to 4 figure is for\u003c\/h3\u003e\n    \u003cp\u003eThermaSol lists the Spectra for 3 to 4 people. Treat the upper number as seated and the lower number as comfortable. The glass front is semi private Parsol dark grey, argon insulated and UV protected, so the cabin reads as closed from a garden path while still being glass from the inside.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"ready\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eBefore you order\u003c\/p\u003e\n    \u003ch2\u003eFive things that are cheap to check now and expensive to discover later\u003c\/h2\u003e\n    \u003ch3\u003e1. The pad\u003c\/h3\u003e\n    \u003cp\u003eThermaSol's spec sheet recommends a \u003cstrong\u003eminimum 8 inch slab\u003c\/strong\u003e. The cabin weighs 2,205 pounds assembled and ships at 2,425. If you are siting it on a deck rather than a slab, have the structure checked against that load before you order, not after.\u003c\/p\u003e\n    \u003ch3\u003e2. The approach\u003c\/h3\u003e\n    \u003cp\u003eThe Spectra is delivered \u003cstrong\u003efully assembled\u003c\/strong\u003e, which means a forklift or a crane has to reach the pad. Measure the gate, the side return and anything overhead. A cabin that cannot get to the garden is a cabin on your driveway.\u003c\/p\u003e\n    \u003ch3\u003e3. The clearance\u003c\/h3\u003e\n    \u003cp\u003eThermaSol asks for 110 inches wide by 102 deep by 100 high around the unit. That is roughly two feet of working room beyond the cabin on the plan, and it is what lets a service technician reach the heater later.\u003c\/p\u003e\n    \u003ch3\u003e4. The electrician\u003c\/h3\u003e\n    \u003cp\u003eThermaSol requires that a licensed electrician installs the heater. Book that person before the delivery date rather than after it.\u003c\/p\u003e\n    \u003ch3\u003e5. The lead time\u003c\/h3\u003e\n    \u003cp\u003eTwelve weeks from order. The Spectra is built to order and shipped from the distributor, so this is a plan-ahead purchase rather than a stock item.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"tsspec-tinted\" id=\"built\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eHow it is built\u003c\/p\u003e\n    \u003ch2\u003eThree things about the Spectra you cannot change afterwards\u003c\/h2\u003e\n    \u003cfigure\u003e\u003cdiv class=\"tsspec-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/spectra__spectra__05.jpg?v=1791433632\u0026amp;width=1200\" alt=\"ThermaSol Spectra outdoor sauna cabin, exterior in context\" width=\"2000\" height=\"2000\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eFluted Tyrol wood with a black trim inset and honed black aluminium cladding, under a Firestone EPDM roof.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eThe envelope\u003c\/h3\u003e\n    \u003cp\u003eMulti layer construction with \u003cstrong\u003eSTEICO wood fibre insulation\u003c\/strong\u003e, under a \u003cstrong\u003eFirestone EPDM roof\u003c\/strong\u003e. Both are named by ThermaSol. The exterior is fluted Tyrol wood with a black trim inset and honed black aluminium cladding, so the cabin is dark and linear rather than log cabin.\u003c\/p\u003e\n    \u003cfigure\u003e\u003cdiv class=\"tsspec-fig\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/spectra__spectra__03.jpg?v=1791433632\u0026amp;width=1200\" alt=\"ThermaSol Spectra outdoor sauna cabin, the Tyrol wood facade\" width=\"1707\" height=\"1707\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cfigcaption\u003eParsol argon insulated glass in semi private dark grey: closed from the garden, glass from the bench.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003ch3\u003eThe glass\u003c\/h3\u003e\n    \u003cp\u003eParsol argon insulated tempered glass with UV protection, in a semi private dark grey. ThermaSol's own pages give two different thicknesses for this same named glass across sibling models, so we are not publishing a millimetre figure here. If the pane specification matters to your build, ask and we will get it in writing.\u003c\/p\u003e\n    \u003ch3\u003eThe floor\u003c\/h3\u003e\n    \u003cp\u003eHigh density resin composite, not timber. It is the one surface in the cabin that is not wood, and it is the reason the Spectra tolerates a wet floor better than a traditional slatted base.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"heater\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eHeater and circuit\u003c\/p\u003e\n    \u003ch2\u003eA 9 kW Harvia Virta, and the number on the spec sheet that is wrong\u003c\/h2\u003e\n    \u003cp\u003eThe Spectra ships with a \u003cstrong\u003eHarvia Virta, ThermaSol part 14-HL9U1\u003c\/strong\u003e, controlled by a \u003cstrong\u003eHarvia Fenix\u003c\/strong\u003e touchpad with a twelve hour delay start. Three boxes of Olivine Diabase dark grey stones, 110 pounds in total, come with it, along with a temperature sensor, two headrests and a wood platform.\u003c\/p\u003e\n    \u003cp\u003eHarvia's own North American manual settles what that heater is. Document Y05-0767 lists \u003cstrong\u003eHL(S)9U1 at 9.0 kW\u003c\/strong\u003e, drawing \u003cstrong\u003e37.5 amps at 240 volts single phase\u003c\/strong\u003e on a minimum \u003cstrong\u003e8 AWG\u003c\/strong\u003e conductor rated to 90 °C. The arithmetic agrees with itself: 37.5 amps across 240 volts is 9,000 watts exactly.\u003c\/p\u003e\n    \u003ch3\u003eWhy we do not repeat ThermaSol's 8 kW figure\u003c\/h3\u003e\n    \u003cp\u003eThermaSol's Spectra spec sheet carries a line reading \u003cem\u003eRequired Power: 8 kW\u003c\/em\u003e directly below the heater it names as a 14-HL9U1. Those two statements contradict each other. The same 8 kW block appears word for word on ThermaSol's Fortis and Ombra spec sheets as well, across cabins of 54 and 80 square feet. It is boilerplate, and on the Spectra it understates the heater that is actually fitted. We publish the heater ThermaSol names and the rating Harvia gives it.\u003c\/p\u003e\n    \u003ch3\u003eWhy there is no breaker size on this page\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eHarvia does not publish one.\u003c\/strong\u003e None of the three Harvia North American manuals gives a fuse or circuit breaker rating for any heater in this family. They give current draw and a minimum conductor gauge, and leave the overcurrent device to the installer. Your electrician sizes the breaker against the 37.5 amp draw under the NEC and your local code. Anyone quoting you a fixed breaker number for this cabin is reading it off something other than Harvia's manual.\u003c\/p\u003e\n    \u003cp\u003eOne instruction Harvia does give plainly, in section 3.7 of the same manual: the heater feed must \u003cstrong\u003enot\u003c\/strong\u003e be run through an RCD or GFI.\u003c\/p\u003e\n    \u003ch3\u003eIs 9 kW the right size for 51 square feet\u003c\/h3\u003e\n    \u003cp\u003eHarvia publishes a floor area range of \u003cstrong\u003e28 to 79 square feet\u003c\/strong\u003e for the 9.0 kW Virta. The Spectra's 51 square feet sits comfortably inside it, with room at both ends.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"tsspec-tinted\" id=\"costs\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eRunning cost\u003c\/p\u003e\n    \u003ch2\u003eWhat a session actually costs to heat\u003c\/h2\u003e\n    \u003cp\u003eA 9 kW element does not draw 9 kW for an hour. It pulls full power while the room comes up to temperature, then cycles to hold it. Across a typical hour, counting both phases, budget roughly \u003cstrong\u003e5.4 kilowatt hours\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003cp\u003eAt \u003cstrong\u003e17 cents a kilowatt hour\u003c\/strong\u003e, that is about \u003cstrong\u003e$0.92\u003c\/strong\u003e an hour of use. Substitute your own rate from your utility bill, because that single figure moves the answer more than anything about the cabin: the same session is under 60 cents in parts of the Pacific Northwest and well over a dollar fifty in parts of New England.\u003c\/p\u003e\n    \u003cp\u003eThree sessions a week at an hour each lands near \u003cstrong\u003e$12\u003c\/strong\u003e a month at that rate. The cabin's integrated LED lighting runs on a separate 110 volt supply and is immaterial against the heater.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"crate\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eWhat you get\u003c\/p\u003e\n    \u003ch2\u003eWhat arrives, and what is separate\u003c\/h2\u003e\n    \u003ch3\u003eIn the delivery\u003c\/h3\u003e\n    \u003cp\u003eThe assembled cabin, the Harvia Virta heater fitted, the Harvia Fenix control, a temperature sensor, three boxes of Olivine Diabase stones at 110 pounds, two headrests and a wood platform. The MyHarvia app pairs with the Fenix control.\u003c\/p\u003e\n    \u003ch3\u003eNot in the delivery\u003c\/h3\u003e\n    \u003cp\u003eThe slab or deck, the electrical supply and the electrician, the crane or forklift on delivery day, and any site preparation. Freight on a cabin this size is quoted rather than published, so talk to us before you order and we will get you a real number for your address.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"tsspec-tinted\" id=\"siting\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eDelivery and siting\u003c\/p\u003e\n    \u003ch2\u003eIt arrives built, which changes the job\u003c\/h2\u003e\n    \u003cp\u003eMost outdoor saunas at this price are a flat pack with a two day assembly. The Spectra is not. It leaves the distributor finished and arrives on a truck as one 2,425 pound unit, which removes the build from your weekend and replaces it with a lifting problem.\u003c\/p\u003e\n    \u003cp\u003ePlan for machine access to the pad, an unobstructed approach wide enough for the cabin plus rigging, and someone on site who can direct the placement. Once it is down and level, the remaining work is the electrical connection and filling the stone basket.\u003c\/p\u003e\n    \u003cp\u003eKeep the service clearance honest. ThermaSol's 110 by 102 inch footprint is not decorative: an installation that leaves no access to the heater is excluded from the warranty.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"specs\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eSpecifications\u003c\/p\u003e\n    \u003ch2\u003eThermaSol Spectra specifications\u003c\/h2\u003e\n    \u003cdiv class=\"tsspec-tw\"\u003e\u003ctable class=\"tsspec-spec\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eExterior\u003c\/th\u003e\n\u003ctd\u003e82 in W × 90 in D × 91 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCabin interior\u003c\/th\u003e\n\u003ctd\u003e51 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePlacement clearance\u003c\/th\u003e\n\u003ctd\u003e110 in W × 102 in D × 100 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e3 to 4 people\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAssembled weight\u003c\/th\u003e\n\u003ctd\u003e2,205 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShipping weight\u003c\/th\u003e\n\u003ctd\u003e2,425 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003ctd\u003eHarvia Virta 14-HL9U1, 9.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e240 V single phase, 37.5 A, minimum 8 AWG 90 °C copper\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eHarvia Fenix, 12 hour delay start\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStones\u003c\/th\u003e\n\u003ctd\u003eOlivine Diabase dark grey, 3 boxes, 110 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInterior\u003c\/th\u003e\n\u003ctd\u003eTyrol wood walls, thermo aspen benches and backrest, high density resin composite floor\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eExterior finish\u003c\/th\u003e\n\u003ctd\u003eFluted Tyrol wood, black trim inset, honed black aluminium cladding\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eGlass\u003c\/th\u003e\n\u003ctd\u003eParsol argon insulated tempered, semi private dark grey, UV protected\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRoof\u003c\/th\u003e\n\u003ctd\u003eFirestone EPDM\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003ctd\u003eMulti layer with STEICO wood fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLighting\u003c\/th\u003e\n\u003ctd\u003eFull spectrum LED backrest on independent controls, plus integrated 110 V cabin lighting\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSlab\u003c\/th\u003e\n\u003ctd\u003eMinimum 8 in recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLead time\u003c\/th\u003e\n\u003ctd\u003e12 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThermaSol does not publish interior linear dimensions or a glass thickness we can stand behind for this cabin. Both are noted above rather than estimated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"tsspec-tinted\" id=\"compare\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eCompare models\u003c\/p\u003e\n    \u003ch2\u003eWhere the Spectra sits in ThermaSol's outdoor range\u003c\/h2\u003e\n    \u003cp\u003eFive outdoor cabins, and the choice is mostly about footprint and glass.\u003c\/p\u003e\n    \u003cdiv class=\"tsspec-tw tsspec-tw--scroll\"\u003e\u003ctable class=\"tsspec-cmp\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eExterior\u003c\/th\u003e\n\u003cth\u003eInterior\u003c\/th\u003e\n\u003cth\u003ePeople\u003c\/th\u003e\n\u003cth\u003eHeater\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSpectra\u003c\/th\u003e\n\u003ctd\u003e82 × 90 in\u003c\/td\u003e\n\u003ctd\u003e51 sq ft\u003c\/td\u003e\n\u003ctd\u003e3 to 4\u003c\/td\u003e\n\u003ctd\u003eVirta 9.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFortis\u003c\/th\u003e\n\u003ctd\u003e87 × 90 in\u003c\/td\u003e\n\u003ctd\u003e54 sq ft\u003c\/td\u003e\n\u003ctd\u003e3 to 4\u003c\/td\u003e\n\u003ctd\u003eVirta 8.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVue\u003c\/th\u003e\n\u003ctd\u003e79 × 87 in\u003c\/td\u003e\n\u003ctd\u003enot published\u003c\/td\u003e\n\u003ctd\u003e3 to 4\u003c\/td\u003e\n\u003ctd\u003eVirta 9.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVera\u003c\/th\u003e\n\u003ctd\u003e63 × 87 in\u003c\/td\u003e\n\u003ctd\u003enot published\u003c\/td\u003e\n\u003ctd\u003e2 to 3\u003c\/td\u003e\n\u003ctd\u003eVirta 8.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOmbra\u003c\/th\u003e\n\u003ctd\u003e130 × 91 in\u003c\/td\u003e\n\u003ctd\u003e80 sq ft\u003c\/td\u003e\n\u003ctd\u003e4 to 5\u003c\/td\u003e\n\u003ctd\u003eVirta 10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\u003c\/div\u003e\n    \u003cp\u003eThe Spectra and the Fortis are the closest pair, three square feet apart, and the real difference between them is the heater and the facade treatment. The Ombra is a different proposition: it is half as big again and carries an integrated changing area at the entry.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003cdiv class=\"tsspec-c\"\u003e\n    \u003cp class=\"tsspec-eyebrow\"\u003eBuyer questions\u003c\/p\u003e\n    \u003ch2\u003eThermaSol Spectra questions buyers ask before ordering\u003c\/h2\u003e\n    \u003cdiv class=\"tsspec-faq\"\u003e\n        \u003cdetails\u003e\u003csummary\u003eDoes the Spectra come with the heater?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eYes. The Harvia Virta heater, the Harvia Fenix control, the temperature sensor and 110 pounds of stones are all included and fitted. The electrical supply and the electrician are not.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eWhat size breaker does it need?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eHarvia does not publish one, and neither will we. The heater draws 37.5 amps at 240 volts single phase and wants a minimum 8 AWG conductor. Your licensed electrician sizes the overcurrent device to that load under the NEC and your local code.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eWhy does the spec sheet say 8 kW when the heater is 9 kW?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eBecause that line is boilerplate. The identical 8 kW power block appears on ThermaSol's Fortis and Ombra spec sheets too, across cabins of very different sizes. The heater part number on the same page, 14-HL9U1, is a 9.0 kW Virta in Harvia's own manual.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eDo I need a concrete slab?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eThermaSol recommends a minimum 8 inch slab. A deck is possible if the structure is rated for 2,205 pounds plus occupants, but have that confirmed before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eHow does it get into my garden?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eOn a forklift or a crane. The Spectra arrives fully assembled as a single 2,425 pound unit, so machine access to the pad is a requirement rather than a convenience.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eWhat is the warranty?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eOne year on the sauna room from substantial project completion, and five years on the Harvia heater, control and power box in a residential setting. Stones and heating elements carry one year. Registration is required within fifteen days of purchase and the room must be installed by a certified electrician or qualified service representative.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eCan I put it in a rental or a gym?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eNo. ThermaSol's warranty excludes residential units used in any non residential setting, naming hotels, spas, gyms, health clubs and short term rentals specifically. Talk to us about the commercial range instead.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eIs the Spectra certified?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eThe Harvia Virta heater fitted inside is ETL Listed to UL 875, the US standard for electric dry bath heaters. No certification is published for the structure itself by ThermaSol or by anyone else, which is normal in this category but worth knowing before you talk to a local inspector. We will not tell you a listed heater makes the structure listed, because UL 875 treats a heater and a factory built room as separate things.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eHow long does it take to arrive?\u003c\/summary\u003e\u003cdiv class=\"tsspec-fb\"\u003e\u003cp\u003eTwelve weeks from order. The Spectra is built to order at the factory rather than drawn from US stock, so the clock starts when the order is placed and does not move if you order early in the week. Use that window to get the slab poured, the circuit run and the delivery access confirmed, so that the only thing left on delivery day is placing the cabin and connecting it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\n    \u003c\/div\u003e  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"ThermaSol","offers":[{"title":"Default Title","offer_id":67692142952815,"sku":"14-SPECTRA","price":36092.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/0674\/1103\/files\/spectra-f49.jpg?v=1791441157","url":"https:\/\/recoveryroomdirect.com\/products\/thermasol-spectra-3-4-person-outdoor-sauna-cabin","provider":"Recovery Room Direct","version":"1.0","type":"link"}