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Sauna 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 sauna heater ships without stones, so buy these alongside the heater.
Match 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.
The 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.
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Rinse 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.
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| Specification | R-991 | R-995 |
|---|---|---|
| Part number | R-991 | R-995 |
| Stone size | 5 to 10 cm | 10 to 15 cm |
| Box weight | 33 lbs | 44 lbs |
| Stone type | Rounded olivine diabase | Rounded olivine diabase |
| Colour | Grey | Grey |
| Origin | Finland | Finland |
| Boxes for a Harvia Spirit | 4 | Not specified for Spirit |
| Suits | Electric heaters and wood stoves | Large columns and wood stoves |
If 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.
Getting 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 book a call.
Four 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.
No. 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.
Rearrange at least once a year and replace annually. In a heavily used room, more often.
Yes. 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.
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Secure Your Sauna Experience with RecovAthlete's' Harvia Electric Heater Warranty
Enjoy peace of mind with your Harvia Electric Sauna Heater purchase, backed by RecovAthlete's comprehensive limited warranty. This commitment guarantees that your sauna heater will be protected against defects in materials and workmanship, ensuring a seamless and worry-free experience.
Key Features of Your Warranty:
Coverage for Defects: Rest assured knowing that any defects in materials and workmanship are covered for a specified period. This includes one year for heating elements (coils) and five years for other sauna heater components from the date of delivery.
Exclusive to Original Purchaser: This warranty is specifically tailored to protect you, the original consumer, emphasizing our commitment to your satisfaction.
Variety of Remedies Available: In case of any defects, RecovAthlete offers multiple solutions:
Shipping Fees Covered for Returns: If returning the defective product is necessary, we'll handle the shipping costs, ensuring a hassle-free process.
Important Warranty Details:
Exclusions: Note that the warranty does not cover damages due to transportation, storage, improper use, lack of maintenance, unauthorized repairs, and wear and tear.
How to Claim: Simply contact our after-sales team at info@recovathlete.com with product details and a description of the defect during the warranty period.
Limitation of Liability: While we strive for excellence, our liability is limited to the actual amount paid for the defective product, excluding consequential or incidental damages.
By choosing Harvia Electric Sauna Heaters from RecovAthlete, you're not just buying a product; you're investing in a reliable and stress-free sauna experience. Our warranty is designed to ensure that your satisfaction remains our top priority.
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