Harvia Cauldron 80 Liter Water Heater
Best wood-burning water heater for traditional, large-scale sauna enthusiasts.
Bring the authentic Finnish cottage atmosphere to your sauna with the Harvia Cauldron 80 Liter Water Heater. This wood-burning unit efficiently heats up to 80 liters (21 gallons) of water, perfect for larger sauna sessions. Its design features direct heat distribution beneath the inner cauldron for optimal efficiency. Constructed with a durable stainless steel body painted black, it also includes vermiculite insulation to keep the exterior cooler. The replaceable fire chamber ensures long-lasting performance and durability for years of authentic sauna enjoyment.
$1836.00
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 162
#2 in Sauna Heaters
Price vs Category Average
-21%
Below average
Water Tank Capacity
8021
/ L ( Gal)
Who it's for
- Eco-conscious users seeking efficient wood-stove heat utilization
- Large families or groups needing continuous hot water
- Sauna owners prioritizing long-term durability and reliability
Who should skip it
- Owners of compact saunas with limited floor space
- Users preferring the convenience of automated temperature controls
- Individuals wanting low-maintenance, easy-to-clean equipment
Performance breakdown
Thermal Efficiency
Direct heat distribution ensures rapid water heating for larger sauna sessions.
Build Durability
Stainless steel construction provides exceptional resistance to high-heat sauna environments.
Maintenance Longevity
Replaceable fire chamber design significantly extends the unit's total operational lifespan.
Safety Insulation
Vermiculite lining effectively keeps exterior surfaces cooler during active wood burning.
Authentic Experience
Wood-burning operation delivers the genuine Finnish cottage atmosphere sauna enthusiasts crave.
Capacity Utility
Eighty-liter tank volume easily supports the needs of larger groups.
Key Specs
Water Tank Capacity
80 L (21 Gal)
Weight
187 lbs
Construction Material
Stainless Steel
Height
31.9 inches
Depth
23.2 inches
Width
23.2 inches
Smoke Outlet Diameter
5.5 inches
Mounting Type
Floor Standing
Features
- Authentic Finnish cottage sauna ambiance
- Heats large volumes of water
- Efficient direct heat distribution
- Durable stainless steel construction
- Replaceable fire chamber for longevity
- Cooler exterior surface with insulation
- Traditional black painted finish
What customers say
Customers consistently praise the Harvia Cauldron for its exceptional build quality and long term reliability. Reviewers frequently highlight the robust construction, noting that the unit handles demanding use in cabins or outdoor settings without issue. The simple, effective design ensures ease of operation, making it a dependable choice for heating large volumes of water quickly. Consumers feel confident in this purchase, viewing it as a lasting investment rather than a temporary fix. This focus on durability establishes strong trust in the Harvia brand.
Know before you buy
The vermiculite insulation is integrated into the design to keep the exterior surface of the cauldron cooler than a standard metal tank. This helps reduce the risk of accidental burns if someone brushes against the unit during a sauna session.
The fire chamber is designed to be replaceable. This feature significantly extends the overall lifespan of the unit, as you can swap out the internal components that experience the most wear without having to replace the entire 80-liter tank.
The unit requires a chimney connection with a smoke outlet diameter of 5.5 inches. Ensure your sauna setup can accommodate this size and that your chimney installation complies with local fire safety codes for wood-burning appliances.
The Harvia Cauldron is specifically engineered as a wood-burning water heater for sauna environments. It is not intended for potable water consumption or for use as a general-purpose stove for cooking.
The unit measures 31.9 inches in height with a width and depth of 23.2 inches. Because it is a floor-standing wood-burning unit, you must also ensure there is adequate clearance from combustible materials as dictated by your local building and fire safety regulations.
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$1836