Harvia 24.1kW Steel Wood Burning Sauna Stove - WKPR20DUOS
The Harvia Pro 20 Duo 24.1kW Steel provides a seamless purchasing experience and easy installation, delivering robust heat and the ability to heat two rooms simultaneously. Celebrated for its innovative design and reliable performance, Harvia represents a legacy of excellence at My Sauna World. By choosing this powerful stove, you join a global community of wellness enthusiasts reaping the benefits of regular sauna use, including improved muscle recovery, stress reduction, and better sleep—making it an essential part of your holistic wellness journey.
What our Experts Think
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Powerful 24.1 kW performance for medium–large saunas
Designed for sauna rooms around 8–20 m³, the WKPR20DUOS delivers fast heat-up and strong, consistent temperatures suitable for frequent use.
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DUO “two-room” design adds real versatility
Experts highlight its unique build that allows it to heat the sauna while also acting as a fireplace in an adjacent room, improving comfort and space usage.
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Clean and convenient outside loading system
Wood is loaded from outside the sauna, keeping the sauna room cleaner, reducing mess, and improving user comfort during operation.
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Strong steam (löyly) quality with stable heat
Large stone capacity (~40 kg) ensures soft, even, long-lasting steam—ideal for traditional sauna bathing rather than harsh, dry heat spikes.
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Durable stainless steel construction
Built with high-quality steel for long service life, even under repeated high-temperature wood firing cycles.
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User-friendly installation features
Adjustable feet and practical chimney connection design make installation easier and more flexible in custom sauna builds.
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Ideal for practical sauna setups
Experts often recommend it for users who want a clean indoor sauna experience + fireplace ambience in one system, especially in cabins or dual-room layouts.
Q&A
Q: What is the Harvia Pro 20 DUOS used for?
A: It is a wood-burning sauna stove designed to heat medium-sized saunas while also functioning as a fireplace for an adjacent room.
Q: What makes the “DUOS” model special?
A: It features a dual-purpose design that heats the sauna while allowing you to enjoy a visible fireplace flame in the next room.
Q: What sauna room size is it suitable for?
A: It is ideal for sauna rooms approximately 283–706 ft³ (8–20 m³) depending on insulation and design.
Q: What is its heating power?
A: It delivers about 24.1 kW of wood-burning heat output, providing fast and efficient sauna heating.
Q: Can it heat more than one space?
A: Yes, it can heat both the sauna room and an adjacent room through its fireplace-style front design.
Q: What are the main construction features?
A: It includes a durable steel/stainless steel body, a large glass door for fire viewing, and a high stone capacity for strong steam (löyly).
Q: Does it provide a traditional sauna experience?
A: Yes, it produces intense, authentic steam and a classic wood-fired sauna atmosphere.
Q: Does it require a chimney and installation?
A: Yes, it requires a proper chimney system and professional installation for safe operation.
Maintenance Tips
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Clean ash after every use: Always remove cooled ash to maintain strong airflow and efficient burning.
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Use only dry, seasoned wood: Hardwoods like birch or alder improve heat output and reduce soot buildup.
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Chimney maintenance: Inspect and clean the flue regularly to prevent creosote buildup and ensure safe draft performance.
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Stone inspection: Check sauna stones annually; replace cracked or crumbling stones and keep loose stacking for proper airflow.
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Airflow control check: Ensure air intake and combustion paths stay clear for fast, efficient heating.
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Exterior care: Wipe steel surfaces and check for rust or heat discoloration to maintain durability.
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Avoid overfiring: Do not overload wood, as excessive heat can shorten stove lifespan and damage components.
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Water tank (if installed): Periodically clean and descale to prevent mineral buildup and maintain hygiene.
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