Harvia Sauna Heater Stones, Split Face, 10-15cm (AC3020)
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The Harvia AC3020 stones are 10-15cm in size and designed for use with Harvia sauna heaters and stoves. Sold in 44 lbs boxes. Listed for the Cilindro, Harvia 50, Legend, Linear, M Series, Pro, Virta and Virta Combi series. Supplied in natural stone.
- Olivine diabase sauna stones
- Durable with high-heat capacity
- Stones range from 4" to 6" (10-15 cm)
44 lbs of split-face (10-15cm) sauna stones
| Harvia Part Number | AC3020 |
| Color / Finish | Natural Stone |
| Material | Natural Stone |
| Dimensions | 10cm W (100mm) x 15cm H (150mm) |
| Weight | 44 lbs |
| Warranty | 2 years (consumer use, +1 year if registered with Harvia); 2 years (commercial use) |
| Ships | Parcel |
| Made In | Finland |
Harvia lists these stones for the following heaters and stoves.
Cilindro (Wood-Burning)Harvia Cilindro 16, Harvia Cilindro 20 Harvia 50
Harvia 50 Legend
Harvia Legend 150, Harvia Legend 150 SL, Harvia Legend 240 DUO, Harvia Legend 240 GreenFlame and 2 more Linear
Harvia Linear 16 Black, Harvia Linear 18 Compact Black, Harvia Linear 22 GreenFlame, Harvia Linear 22 GreenFlame ES M Series
Harvia M3, Harvia M3 SL Pro
Harvia Pro 20, Harvia Pro 20 DUO, Harvia Pro 20 ES, Harvia Pro 20 LS and 5 more Virta
Harvia Virta HL110E, Harvia Virta HL60E, Harvia Virta HL80E, Harvia Virta HL90E Virta Combi
Harvia Virta Combi HL110SA, Harvia Virta Combi HL80SA, Harvia Virta Combi HL90SA
- 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.
What does the Harvia Sauna Heater Stones, Split Face, 10-15cm (AC3020) fit?
Harvia lists it for the Cilindro (Wood-Burning), Harvia 50, Legend, Linear, M Series, Pro, Virta and Virta Combi series. These parts are size-specific — check your exact model against the list above, not just the series name.
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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