{"product_id":"harvia-rounded-olivine-sauna-stones","title":"Harvia Rounded Olivine Diabase Sauna Stones | R-991, R-995","description":"\u003cstyle\u003e\n.rca-pdp{font-family:Arial,sans-serif;font-size:15px;line-height:1.7;color:#232323;width:100%;max-width:100%;margin:0;padding:0;box-sizing:border-box}\n.rca-pdp *{box-sizing:border-box;max-width:100%}\n.rca-pdp h2{font-size:22px;font-weight:bold;color:#232323;margin:0 0 12px;line-height:1.3}\n.rca-pdp h3{font-size:18px;font-weight:bold;color:#232323;margin:28px 0 12px}\n.rca-pdp p{margin:0 0 20px}\n.rca-pdp ul,.rca-pdp ol{margin:0 0 28px;padding-left:20px;line-height:1.7;color:#232323}\n.rca-pdp li{margin-bottom:8px}\n.rca-pdp a{color:#323f4e;text-decoration:underline;text-underline-offset:2px}\n.rca-pdp .rca-note{font-size:14px;color:#3F7276;margin-bottom:16px}\n.rca-pdp .rca-flex{display:flex;gap:16px;margin-bottom:28px;flex-wrap:wrap}\n.rca-pdp .rca-box{flex:1 1 260px;min-width:0;border-radius:6px;padding:16px}\n.rca-pdp .rca-box ul{margin:0;padding-left:20px}\n.rca-pdp .rca-best{background:#E8F5E9;border-left:4px solid #4CAF50}\n.rca-pdp .rca-not{background:#FFEBEE;border-left:4px solid #EF5350}\n.rca-pdp .rca-why{background:#E8F4F8;border-left:4px solid #539499;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-warn{background:#FFF8E1;border-left:4px solid #F5C842;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-req{background:#F5F5F5;border-left:4px solid #CCCCCC;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-label{margin:0 0 6px;font-size:13px;font-weight:bold;text-transform:uppercase;letter-spacing:.5px;color:#232323}\n.rca-pdp table{border-collapse:collapse;width:100%;margin-bottom:16px}\n.rca-pdp caption{text-align:left;font-size:14px;color:#3F7276;padding-bottom:8px}\n.rca-pdp th{background:#3F7276;color:#fff;font-weight:bold;padding:10px 12px;text-align:left;font-size:14px}\n.rca-pdp td{padding:10px 12px;border-bottom:1px solid #e5e5e5;color:#232323;vertical-align:top}\n.rca-pdp tbody tr:nth-child(odd){background:#F9F9F9}\n.rca-pdp .rca-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}\n.rca-pdp .rca-swipe{display:none}\n.rca-pdp details{margin-bottom:12px;border-bottom:1px solid #e5e5e5;padding-bottom:12px}\n.rca-pdp summary{font-weight:bold;cursor:pointer;color:#232323;padding:12px 0;min-height:44px;line-height:1.4}\n.rca-pdp details p{padding:10px 0 4px;margin:0}\n@media (max-width:640px){\n.rca-pdp{font-size:16px;padding:0 12px}\n.rca-pdp h2{font-size:20px;line-height:1.35}\n.rca-pdp h3{font-size:17px}\n.rca-pdp .rca-box{min-width:100%}\n.rca-pdp table{font-size:13px}\n.rca-pdp th{padding:8px 6px;font-size:12px;line-height:1.3}\n.rca-pdp td{padding:8px 6px;line-height:1.4;overflow-wrap:anywhere}\n.rca-pdp td:first-child{font-weight:bold}\n.rca-pdp .rca-wide{min-width:640px}\n.rca-pdp .rca-swipe{display:block;font-size:12px;color:#3F7276;margin-bottom:16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rca-pdp\"\u003e\n\n\n\u003ch2\u003eHarvia Rounded Olivine Diabase Sauna Stones: the only stone a Spirit heater is allowed to use\u003c\/h2\u003e\n\n\u003cp\u003eSauna stones are not decorative and not interchangeable. These are Harvia's rounded olivine diabase heater stones, quarried and packed in Finland. The R-991 is 5 to 10 cm in a 33 lb box. The R-995 is 10 to 15 cm in a 44 lb box. Rounded stone lets poured water run down through the stack instead of flashing off the top, giving softer, longer steam than split-face stone. Every \u003ca href=\"\/collections\/stoves-and-heaters\"\u003esauna heater\u003c\/a\u003e ships without stones, so buy these alongside the heater.\u003c\/p\u003e\n\n\u003ch3\u003eWhich size you need\u003c\/h3\u003e\n\n\u003cp\u003eMatch the stone to the heater, not to taste. The R-991 at 5 to 10 cm is what Harvia specifies for the Spirit range and most wall-mounted electric heaters. The R-995 at 10 to 15 cm suits large stone columns and wood stoves, where gaps are bigger and airflow matters more.\u003c\/p\u003e\n\n\u003cdiv class=\"rca-warn\"\u003e\n\u003ch4 class=\"rca-label\"\u003eBEFORE YOU ORDER: IF YOU OWN A SPIRIT, READ THIS\u003c\/h4\u003e\n\u003cp style=\"margin:0;\"\u003eThe Harvia Spirit heater will only accept rounded stone. Harvia's Spirit manual states that only stones of 5 to 10 cm are allowed and that stones with a cleavage surface are not permitted, which rules out every split-face product including the AC3000 and AC3020. For a Spirit you need four boxes of R-991 and nothing else. Do not substitute split-face stone, ceramic stone or soapstone into a Spirit. Running any heater with too few stones, or with the stones packed tight, is a fire risk rather than a performance question.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eBenefits and Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eRounded olivine diabase, so water runs down through the stack rather than flashing off the surface\u003c\/li\u003e\n\u003cli\u003eR-991 at 5 to 10 cm in a 33 lb box, R-995 at 10 to 15 cm in a 44 lb box\u003c\/li\u003e\n\u003cli\u003eThe stone Harvia names for the Spirit range, four boxes of R-991 per heater\u003c\/li\u003e\n\u003cli\u003eIndependently examined and found free of asbestiform minerals\u003c\/li\u003e\n\u003cli\u003eWorks in electric heaters and wood burning stoves alike\u003c\/li\u003e\n\u003cli\u003eQuarried and packed in Finland\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"rca-flex\"\u003e\n\u003cdiv class=\"rca-box rca-best\"\u003e\n\u003cp class=\"rca-label\"\u003eBEST FOR\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHarvia Spirit owners, where rounded stone is mandatory\u003c\/li\u003e\n\u003cli\u003eAnyone replacing stones that have started to crumble\u003c\/li\u003e\n\u003cli\u003eBuyers who want softer steam from an existing heater\u003c\/li\u003e\n\u003cli\u003eTopping off a tall column that has settled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rca-box rca-not\"\u003e\n\u003cp class=\"rca-label\"\u003eNOT IDEAL FOR\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeaters that specify split-face stone. Use AC3000 or AC3020 instead\u003c\/li\u003e\n\u003cli\u003eFilling the bottom layers of a large heater on their own, unless the manual allows it\u003c\/li\u003e\n\u003cli\u003eAnyone expecting a one-time purchase. Stones are a wear part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eHow to stack them, and when to replace\u003c\/h3\u003e\n\n\u003cp\u003eRinse the dust off first. Start with the largest stones at the bottom and against the sides, stand elongated stones on end, and keep the pile loose enough for air to move. Do not wedge stones between heating elements or rest their weight on them. Harvia advises rearranging them at least once a year and replacing them annually to extend heater life. Knock two together: if they crack or sound hollow, they are done. Expect the level to drop about two months after a fresh fill, which is normal settling.\u003c\/p\u003e\n\n\u003cp class=\"rca-swipe\"\u003eSwipe to see the full table\u003c\/p\u003e\n\u003cdiv class=\"rca-scroll\" tabindex=\"0\" role=\"region\" aria-label=\"Harvia rounded sauna stone specifications\"\u003e\n\u003ctable class=\"rca-wide\"\u003e\n\u003ccaption\u003eHarvia rounded olivine diabase sauna stones, published specifications\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eR-991\u003c\/th\u003e\n\u003cth\u003eR-995\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eR-991\u003c\/td\u003e\n\u003ctd\u003eR-995\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone size\u003c\/td\u003e\n\u003ctd\u003e5 to 10 cm\u003c\/td\u003e\n\u003ctd\u003e10 to 15 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBox weight\u003c\/td\u003e\n\u003ctd\u003e33 lbs\u003c\/td\u003e\n\u003ctd\u003e44 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone type\u003c\/td\u003e\n\u003ctd\u003eRounded olivine diabase\u003c\/td\u003e\n\u003ctd\u003eRounded olivine diabase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eGrey\u003c\/td\u003e\n\u003ctd\u003eGrey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFinland\u003c\/td\u003e\n\u003ctd\u003eFinland\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoxes for a Harvia Spirit\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eNot specified for Spirit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuits\u003c\/td\u003e\n\u003ctd\u003eElectric heaters and wood stoves\u003c\/td\u003e\n\u003ctd\u003eLarge columns and wood stoves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlso Consider\u003c\/h3\u003e\n\n\u003cp\u003eIf your heater takes split-face stone, the Harvia AC3000 at 5 to 10 cm and AC3020 at 10 to 15 cm are the angular equivalents. Harvia recommends angular stone in the lower layers of most heaters, with rounded on top. That does not apply to the Spirit, which takes rounded throughout.\u003c\/p\u003e\n\n\u003ch3\u003eWhy buy this from RecovAthlete\u003c\/h3\u003e\n\n\u003cdiv class=\"rca-why\"\u003e\n\u003cp style=\"margin:0;\"\u003eGetting the stone wrong voids the point of an expensive heater and, on a Spirit, breaks the manual. Tell us the heater model and we will tell you the part number and the number of boxes, and ship them with the heater so the install is not held up waiting on rock. Call 866-861-6317, 9am to 6pm EST, Monday to Friday, or \u003ca href=\"https:\/\/calendly.com\/recvoathlete\/30min\"\u003ebook a call\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eQuestions buyers ask\u003c\/h3\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow many boxes does a Harvia Spirit need?\u003c\/summary\u003e\n\u003cp\u003eFour boxes of R-991. Harvia publishes both a 110 lb stone figure and a four box recommendation on the same page, and four 33 lb boxes come to 132 lbs. Buy the four Harvia specifies and keep the remainder as reserve stock for topping up, which is what Harvia advises anyway.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eCan I use split-face stones in a Spirit?\u003c\/summary\u003e\n\u003cp\u003eNo. The Spirit manual states that stones with a cleavage surface are not allowed and that only 5 to 10 cm stones may be used. Split-face products such as the AC3000 and AC3020 are excluded. Use R-991.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow often should stones be replaced?\u003c\/summary\u003e\n\u003cp\u003eRearrange at least once a year and replace annually. In a heavily used room, more often.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eCan I use these in a wood burning stove?\u003c\/summary\u003e\n\u003cp\u003eYes. Harvia states rounded stone on the top layer works in all sauna heaters. For a wood stove the larger R-995 is usually the better fit.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Harvia","offers":[{"title":"R-991 | 5 to 10 cm | 33 lb box | Spirit heaters","offer_id":49731334504600,"sku":"R-991","price":102.0,"currency_code":"USD","in_stock":true},{"title":"R-995 | 10 to 15 cm | 44 lb box | large columns and wood stoves","offer_id":49731334537368,"sku":"R-995","price":113.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0422\/3942\/6712\/files\/2984.jpg?v=1787500248","url":"https:\/\/recovathlete.com\/products\/harvia-rounded-olivine-sauna-stones","provider":"RecovAthlete","version":"1.0","type":"link"}