
Harvia
Harvia Pro 20 LS Wood-Burning Sauna Stove
Description Traditional Wood-Fired Sauna Heater with Built-In Water Tank The Harvia Pro 20 LS is designed for sauna users who want an authentic wood-burning experience with added functionality. Featuring a built-in 30-liter water tank on the left side, this stove allows you to heat water while enjoying your sauna. Ideal for cottages, cabins, and outdoor sauna setups, it combines traditional Finnish performance with practical convenience. The large stone capacity ensures a steady flow of heat and rich steam throughout your session. Wood-Burning Performance The Harvia Pro Series stove delivers d
Specifications
- Brand
- Harvia
- Category
- Heater
- Placement
- Both
Description
Traditional Wood-Fired Sauna Heater with Built-In Water Tank
The Harvia Pro 20 LS is designed for sauna users who want an authentic wood-burning experience with added functionality. Featuring a built-in 30-liter water tank on the left side, this stove allows you to heat water while enjoying your sauna.
Ideal for cottages, cabins, and outdoor sauna setups, it combines traditional Finnish performance with practical convenience. The large stone capacity ensures a steady flow of heat and rich steam throughout your session.
Wood-Burning Performance
The Harvia Pro Series stove delivers deep, radiant heat through direct wood combustion, creating a more natural and immersive sauna experience compared to electric heaters.
With 24.1kW of power, it efficiently heats sauna rooms ranging from 283 to 706 cubic feet while maintaining consistent and long-lasting warmth.
Performance benefits include:
- Fast and efficient heat-up
- Deep, penetrating wood-fired warmth
- Stable and even heat distribution
Built-In Water Tank for Added Convenience
The integrated 30-liter water tank allows you to heat water alongside your sauna session, making it especially useful for off-grid or cottage environments.
Benefits include:
- Dual functionality with heating and hot water
- Convenient access to heated water
- Enhanced traditional sauna experience
Stone Requirements and Heat Performance
This stove requires 88 lbs of sauna stones (2 boxes of 44 lbs, 10–15 cm stones), sold separately.
Sauna stones absorb and store heat, then release it gradually to create a softer and more balanced temperature. High-quality stones improve heat retention, steam production, and overall durability.
Pairs Perfectly With
Compatible saunas & essentials
Ideal for Barrel, Cabin, Traditional saunas (wood-burning).
Compatible Saunas
Heater Essentials

Required rocks
Cozy Heat Traditional Sauna Stones
Digital controls
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Heater package
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Customer Reviews
4 verified reviews
Highly recommend
Does exactly what it promises. The chromotherapy lighting is a lovely touch.
Love it
I was nervous buying online but this exceeded expectations. Feels like a luxury spa at home.
Best purchase
Heats fast, runs quiet, and the app control is genuinely useful. Highly recommend.
Premium quality
Good value for a commercial-grade unit. Our members love it.




