Harvia WP500 Cauldron, 50 Liter Water Heater
Harvia WP500 Cauldron 50 Liter Wood-Fired Water Heater
Traditional Finnish Wood-Fired Cauldron — 50L Stainless Steel | UL Listed | Sauna & Cottage
The Harvia WP500 Cauldron is a 50-liter (13.2-gallon) wood-fired water heater built for sauna cottages, outdoor wellness spaces, and rustic bathing setups where authentic Finnish character and dependable hot water go hand in hand. Its stainless steel construction, replaceable fire chamber, and removable inner cauldron make it as practical as it is timeless.
Heat is distributed directly beneath the inner cauldron for efficient, even water heating — delivering the kind of wood-fired warmth that’s been central to Finnish sauna culture for generations. Adjustable legs simplify placement during installation, and UL listing confirms it meets U.S. safety standards.
Who This Is For
The Harvia WP500 is ideal for sauna owners, cottage builders, and outdoor wellness enthusiasts who want a traditional wood-fired water heating solution with long-term durability. It’s particularly well-suited for off-grid or cottage-style sauna setups where electric water heating isn’t practical or desired.
Key Features
- 50-liter (13.2-gallon) water tank capacity
- Wood-fired operation for authentic Finnish sauna cottage atmosphere
- Stainless steel construction for durability and long-term performance
- Heat distributed directly under the inner cauldron for efficient, even heating
- Replaceable fire chamber for extended service life
- Removable inner cauldron for easier cleaning and maintenance
- Adjustable legs for installation flexibility
- UL Listed — meets U.S. safety standards
Specifications
- Model: WP500
- SKU: WP500
- Construction: Stainless steel
- Water Tank Capacity: 50L (13.2 gal)
- Weight: 80 lbs
- Height: 30.3”
- Width: 17.1”
- Depth: 19.7”
- Diameter of Smoke Outlet: 4.5”
- Smoke Outlet Height from Floor (Rear): 22.8”
- Safety Distance — Front: 19.7”
- Safety Distance — Sides and Back: 9.8”
- Safety Distance — Upper Surface to Ceiling: 39.4”
- Safety Listing: UL Listed
What’s Included
- Harvia WP500 Cauldron Water Heater
- Installation and operation documentation
Shipping & Delivery
This product ships free via freight to the contiguous United States. It arrives on a wooden pallet, encased in three-ply cardboard for added protection during transit. A scheduled delivery appointment is required — you will be contacted prior to shipment to review delivery details and site access. Please inspect your shipment upon arrival and note any visible damage before signing.
Installation Notes
- Designed for sauna and cottage-style use with wood-fired operation
- Proper venting and chimney connection required — smoke outlet diameter: 4.5”
- Observe all safety clearance distances per the Installation & Operation Manual
- Adjustable legs allow for leveling during installation
- Review all installation and safety documentation before purchase and installation planning
- Professional installation recommended
Warranty
The Harvia WP500 Cauldron includes a 1-year limited warranty for consumer use and a 1-year limited warranty for commercial use. As an authorized Harvia retailer, Prime Regeneration ensures full warranty coverage is passed through to you at the time of purchase. View Warranty Document.
Manuals & Documentation
Complete Your Sauna Setup
Explore more sauna heaters and accessories from Prime Regeneration.
FAQ
How does the WP500 heat water?
The Harvia WP500 Cauldron is wood-fired — you burn wood in the fire chamber beneath the inner cauldron, which heats the water directly above it. There is no electric connection required.
Can the inner cauldron be removed for cleaning?
Yes — the inner cauldron is removable, making cleaning and maintenance significantly easier.
Is the fire chamber replaceable?
Yes — the fire chamber is designed to be replaceable, extending the overall service life of the unit.
What venting is required?
The WP500 requires a chimney or flue connection at the smoke outlet (4.5” diameter, located 22.8” from the floor at the rear). Follow all local building and fire codes for wood-burning appliance venting.
Is the WP500 UL listed?
Yes — the WP500 is UL listed, meeting U.S. safety standards for wood-fired water heaters.
Does this ship for free?
Yes — free freight shipping is included to the contiguous United States. A delivery appointment will be scheduled prior to shipment.
Choose options