Harvia Pro 20 SL Wood Burning Sauna Heater Black | WK200SL

Discover a genuinely unique approach to sauna heating with the Harvia Pro 20 SL Wood Burning Sauna Heater, a remarkable 2-in-1 product that functions simultaneously as a high-performance sauna heater and a through-wall fireplace. The Pro 20 SL is installed in the sauna room whilst firewood is loaded from the adjacent room through the wall -- meaning one person can relax in the sauna whilst another enjoys the warmth and spectacle of the fire from the other side, even cooking over the flames if they wish. The cast-iron-framed glass door in the adjacent room provides a beautiful view of the fire from outside the sauna, creating a genuinely social and versatile wellness experience that no other sauna heater can offer. With a powerful 24.1kW output suitable for sauna rooms of 8 to 20 cubic metres, a generous stone compartment for excellent steam, a reversible door hinge and CE and EAC certification, the Harvia Pro 20 SL is designed, engineered and handmade in Finland to the highest standards of quality and ingenuity.

At Home of Clay we are proud stockists of Harvia, one of the world's most respected sauna manufacturers. Please note that stones are not included -- 40kg of 10 to 15cm stones must be ordered separately.

Key features

• 2-in-1 sauna heater and through-wall fireplace -- The Pro 20 SL's most extraordinary feature is its dual function -- the heater body sits in the sauna room whilst the glass-fronted firebox extends through the wall into an adjacent room, creating a sauna heater and a viewing fireplace in a single installation. One person relaxes in the sauna whilst another enjoys the fire from outside, making this one of the most social and versatile sauna heating solutions available.
• Through-wall firing from adjacent room -- Firewood is loaded from the adjacent room through the wall, keeping all wood and ash debris entirely outside the sauna space and creating a significantly cleaner sauna environment. The adjacent room benefits from the warmth and atmosphere of a real fire simultaneously.
• Cast-iron-framed glass door for fire viewing -- The Pro 20 SL's cast-iron-framed glass door in the adjacent room provides a clear and beautiful view of the fire, allowing those outside the sauna to enjoy the warmth and spectacle of the flames -- and even to cook over them if they wish.
• Powerful 24.1kW output for sauna rooms of 8 to 20 cubic metres -- With a 24.1kW output the Pro 20 SL is a high-performance heater well suited to medium-sized sauna rooms, delivering reliable and consistent heat throughout the session.
• Generous stone compartment for excellent steam -- The Pro 20 SL's large stone compartment produces plentiful and relaxing steam when water is poured over the stones, ensuring a thoroughly satisfying and authentic Finnish sauna bath experience.
• Reversible door hinge for flexible installation -- The door opening direction can be reversed to suit the specific layout of your adjacent room, providing additional installation flexibility for different wall and room configurations.
• 350mm maximum log length -- The fire chamber accommodates logs up to 350mm long, providing a practical loading capacity suited to most readily available firewood lengths.
• Top and rear flue connection via 115mm outlet -- The Pro 20 SL accommodates both top and rear 115mm flue connections, giving flexibility in chimney configuration to suit your specific building layout.
• Adjustable legs for easy installation -- Adjustable legs make positioning the Pro 20 SL straightforward on variable surfaces, ensuring a precise and stable installation in both the sauna room and through the wall.
• CE and EAC certified -- designed, engineered and handmade in Finland -- Every Harvia Pro 20 SL is designed, engineered and handmade in Finland to Harvia's exacting standards, carrying CE and EAC certification for complete peace of mind.

Why choose the Harvia Pro 20 SL?

The Pro 20 SL is genuinely unlike any other sauna heater available in the UK market. Its 2-in-1 function as both a sauna heater and a through-wall fireplace creates a wellness and social experience that goes far beyond the conventional sauna session -- a space where the sauna and the adjacent room become connected parts of a single, cohesive experience rather than two completely separate environments.

The social possibilities of the Pro 20 SL are what make it truly special. The ability for one person to be in the sauna whilst another watches the fire, warms themselves or cooks over the flames in the adjacent room creates a genuinely communal atmosphere around the sauna experience -- one that reflects the deeply social nature of Finnish sauna culture, where the sauna has always been as much about togetherness as individual wellness.

For those building an integrated home wellness space with a dedicated sauna room and an adjacent changing room, utility room or living area, the Pro 20 SL is the most imaginative and versatile sauna heating solution available. It heats the sauna with a powerful 24.1kW output, keeps the sauna environment clean by loading from outside, provides a beautiful fireplace experience in the adjacent room, and creates a social connection between the two spaces that no other heater can achieve. For those who want their home sauna installation to be truly exceptional, the Harvia Pro 20 SL is an outstanding and unique choice.

Technical specification

Delivery and ordering

The Harvia Pro 20 SL Wood Burning Sauna Heater is delivered to UK mainland addresses for a flat delivery charge of £50. Delivery is approximately 4 to 8 weeks, subject to availability. Please note that additional surcharges apply to the following areas -- Scottish Highlands and Islands and postcodes AB, IV, KW, HS, ZE, BT, IM, TR21, TR22, TR23, TR24, TR25, JE and GY. Please contact us before ordering if your delivery address falls within these areas to confirm applicable charges.

Please note that sauna stones are not included and must be ordered separately -- 40kg of 10 to 15cm stones are required. For further information or to discuss this product please call us on 01782 617517 or email sales@homeofclay.co.uk. Our team is happy to assist with any questions about the Harvia Pro 20 SL and compatible accessories.