
Harvia
Harvia Pro 20 RS Wood-Burning Sauna Stove with Water Tank
Description Harvia Pro 20 RS Wood-Burning Sauna Stove with Water Tank Traditional Sauna Heater with Right-Side Water Tank The Harvia Pro 20 RS is designed for sauna users who want authentic wood-burning performance with added functionality. Featuring a built-in 30-liter water tank on the right side, this stove allows you to heat water while enjoying your sauna. Ideal for cottages, cabins, and outdoor sauna setups, it combines traditional Finnish heating with practical convenience. The large stone capacity ensures consistent heat and a rich, steady steam experience. Wood-Burning Performance The
Specifications
- Brand
- Harvia
- Category
- Heater
- Placement
- Both
Description
Harvia Pro 20 RS Wood-Burning Sauna Stove with Water Tank
Traditional Sauna Heater with Right-Side Water Tank
The Harvia Pro 20 RS is designed for sauna users who want authentic wood-burning performance with added functionality. Featuring a built-in 30-liter water tank on the right side, this stove allows you to heat water while enjoying your sauna.
Ideal for cottages, cabins, and outdoor sauna setups, it combines traditional Finnish heating with practical convenience. The large stone capacity ensures consistent heat and a rich, steady steam experience.
Wood-Burning Performance
The Harvia Pro Series stove delivers deep, radiant heat through direct wood combustion, creating an authentic sauna experience that electric heaters cannot replicate.
With 24.1kW of heating power, it efficiently heats sauna rooms ranging from 283 to 706 cubic feet while maintaining steady and long-lasting warmth.
Performance benefits include:
Fast and efficient heat-up
Deep, penetrating wood-fired heat
Consistent and even temperature distribution
Built-In Water Tank for Convenience
The integrated 30-liter water tank on the right side provides a convenient way to heat water during your sauna session, making it ideal for traditional and off-grid setups.
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 gradually release heat, creating a softer, more balanced temperature while improving steam quality and overall sauna comfort.
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
Harvia Xenio LTY45 Power Extension Unit
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Customer Reviews
5 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.
Exceptional
The contrast therapy combo with the cold plunge is a game changer for my training.




