Harvia Pro Series 40kW Wood-Burning Sauna Heater
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Harvia Pro Series WK500 40kW Wood-Burning Sauna Heater
Floor-Standing Commercial & Large Residential Wood Sauna Stove — Up to 1,060 cu ft | Made in Finland
The Harvia Pro Series WK500 is a floor-standing 40kW wood-burning sauna heater engineered for commercial sauna facilities and large residential installations. Built to heat sauna rooms up to 1,060 cubic feet, it delivers authentic Finnish sauna performance with high-quality steel construction designed for demanding, high-frequency use.
Designed and manufactured in Finland, the WK500 brings the power and reliability expected of a professional-grade sauna stove — whether for a spa, wellness center, resort, or a large private sauna build.
Important: Sauna stones and a chimney system are required for operation and are sold separately.
Who This Is For
The WK500 is the right choice for commercial sauna operators, spa and wellness facility builders, and homeowners with large sauna rooms who need a high-output, wood-burning heater built for frequent, heavy use. If your sauna room exceeds what a standard residential heater can handle, the Pro Series WK500 is purpose-built for the job.
Key Features
- 40kW wood-burning output — designed for sauna rooms up to 1,060 cu ft
- Floor-standing installation for large commercial and residential sauna spaces
- High-quality steel construction built for demanding, high-frequency use
- Authentic Finnish sauna performance
- Designed and manufactured in Finland
- Ideal for commercial spas, wellness centers, resorts, and large private saunas
Ideal Use Cases
- Commercial sauna facilities, spas, and wellness centers
- Large residential sauna installations (rooms up to 1,060 cu ft)
- Fitness and recovery spaces with frequent sauna use
- Hospitality and resort environments
Specifications
- Model: WK500
- SKU: WK500
- Heating Power: 40kW
- Mounting Type: Floor-standing
- Maximum Room Size: Up to 1,060 cu ft
- Construction: High-quality steel
- Origin: Made in Finland
Required Components Sold Separately
- Sauna stones (quantity per manufacturer specifications)
- Chimney system compatible with a wood-burning sauna stove
Shipping & Delivery
This product ships free via freight to the contiguous United States. Please inspect your shipment upon arrival and note any visible damage on the delivery receipt before signing. Contact us if you have questions about delivery logistics for this large-format heater.
Installation Notes
- Floor-standing installation — requires a non-combustible floor surface or hearth pad
- A proper chimney system must be installed prior to use — consult a licensed installer
- Sauna stones must be loaded per manufacturer specifications before first use
- Observe all safety clearance distances per the Installation & Operation Manual
- Follow all local building codes and fire safety regulations for wood-burning appliances
- Professional installation strongly recommended
Warranty
This product includes Harvia’s manufacturer warranty. As an authorized Harvia retailer, Prime Regeneration ensures full warranty coverage is passed through to you at the time of purchase. Warranty coverage is subject to manufacturer terms and proper installation.
Manuals & Documentation
Installation and operation documentation is included with this product. Contact us if you need documentation prior to purchase.
Complete Your Sauna Setup
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FAQ
What size sauna room does the WK500 support?
The WK500 is rated for sauna rooms up to 1,060 cubic feet, making it one of the highest-output wood-burning sauna heaters available for residential and commercial use.
Is this heater suitable for commercial use?
Yes — the Pro Series WK500 is specifically engineered for commercial sauna facilities, spas, wellness centers, and resorts, as well as large residential installations.
Does it come with sauna stones?
No — sauna stones are required and sold separately. Refer to the manufacturer’s installation manual for the required stone quantity and size.
What chimney system is required?
A chimney system compatible with a wood-burning sauna stove is required and must be installed prior to use. Consult a licensed installer and follow all local building and fire codes.
Where is the WK500 made?
The Harvia Pro Series WK500 is designed and manufactured in Finland.
Does this ship for free?
Yes — free freight shipping is included to the contiguous United States.
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