Harvia Sauna Heater Decorative Stones, Rounded, 5-10cm (AC4000)
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The beautiful shape and smooth texture of the AC4000 white sauna stones is exactly what make them the perfect decorative design feature for your sauna heater. Sold in 22 lbs boxes.
- White decorative sauna stones
- Can be used with all Harvia heater models
- Stones range from 2" to 4" (5-10 cm)
- For decorative, top layer use only
22 lb box of 5-10cm white decorative stones
| Harvia Part Number | AC4000 |
| Color / Finish | White |
| Material | Natural Stone |
| Weight | 22 lbs |
| Warranty | 2 years (consumer use, +1 year if registered with Harvia); 2 years (commercial use) |
| Ships | Parcel |
| Made In | Finland |
This item is not tied to a specific heater or stove model — it suits any Harvia sauna.
- Sauna stones are not a decorative topping — they are the thermal mass that makes a sauna a sauna.
- Rinse before loading to wash off dust.
- Stack loosely by hand, largest at the bottom. Never wedge, hammer or pack them.
- Re-stack once a year and replace any that have split or crumbled.
How many boxes of stones do I need?
Each box holds 44 lb, except the rounded R-991 at 33 lb. Your heater's product page gives its stone capacity and the number of boxes Harvia specifies. Order one box more than the minimum so you can set aside any that will not stack cleanly.
How often should sauna stones be replaced?
Re-stack them once a year and replace any that have cracked or crumbled. Stones break down with thermal cycling, and a bed of broken fragments chokes the airflow the heater needs to survive.
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