Harvia WP220ST Stainless Steel Water Tank Heater
Best water heating solution for traditional wood-burning sauna enthusiasts.
Elevate your authentic sauna ritual with the Harvia WP220ST Stainless Steel Water Tank Heater. This innovative accessory mounts directly onto your wood-heated stove's smoke pipe, efficiently warming water using the flue's heat. Its durable stainless steel construction ensures longevity, while the generous 5.8-gallon capacity provides ample hot water for your needs. Designed for compatibility with most Harvia wood stoves (excluding the Harvia 50), it's a seamless addition to your traditional Finnish sauna setup, enhancing the overall experience.
$635.00
Owner Satisfaction
4.7
/ 5
Category Rank
1
/ 182
Best Sauna Accessories
Price vs Category Average
+45%
Above average
Model
220
/ WPST
Who it's for
- Sauna owners seeking energy-efficient water heating solutions
- Homeowners prioritizing long-term durability in humid environments
- Off-grid enthusiasts needing reliable hot water without electricity
Who should skip it
- DIY beginners lacking experience with chimney pipe modifications
- Large groups requiring a continuous supply of hot water
- Users living in areas with hard, mineral-heavy water
Performance breakdown
Thermal Efficiency
Direct flue heat transfer maximizes energy usage during every sauna session.
Build Durability
High-grade stainless steel construction withstands intense heat and humid sauna environments.
Installation Simplicity
Mounts directly to the flue for a straightforward, tool-minimal setup process.
Capacity Adequacy
The 5.8-gallon volume perfectly balances weight with sufficient hot water supply.
System Compatibility
Broad integration across the Harvia wood-stove lineup ensures wide user accessibility.
Ritual Enhancement
Provides a seamless, authentic Finnish experience by automating water heating needs.
Key Specs
Model
WP220ST
Material
Stainless Steel
Water Capacity
5.8 gallons
Compatibility
All wood-heated Harvia stoves (excluding Harvia 50)
Heating Method
Heat transfer via stove smoke pipe
Installation
Pipe model, placed directly on stove pipe
Features
- Heats water quickly via integrated smoke pipe
- Durable stainless steel construction
- Mounts directly on wood stove flue
- Ensures hot water for sauna rituals
- Compatible with most Harvia wood stoves
- Generous 5.8-gallon water capacity
- Enhances authentic sauna experience
What customers say
Users consistently highlight the Harvia WP220ST's exceptional quality and unwavering reliability. Its durable stainless steel construction is built to last in demanding sauna settings. Owners appreciate the heater's efficient and rapid water heating, significantly boosting sauna comfort. Despite the initial investment, the consensus confirms this unit offers excellent value. Its robust build and dependable performance over many seasons ensure lasting satisfaction, making it a premium choice for enduring performance.
Know before you buy
The water tank mounts directly onto the smoke pipe of your wood-burning stove. It utilizes the heat radiating from the flue gases to warm the water as they pass through the pipe.
The WP220ST is compatible with almost all Harvia wood-heated stoves. The only exception is the Harvia 50 model, which is not supported.
The tank has a capacity of 5.8 gallons. This volume is sufficient for multiple uses during your sauna session, such as mixing with cold water for washing or creating steam.
Installation is straightforward as the unit is designed to mount directly onto your stove's smoke pipe. However, ensure you have proper clearance around your stove pipe before installation to accommodate the tank's dimensions.
The tank is constructed from high-quality stainless steel, which is highly resistant to corrosion and rust. It is specifically designed to withstand the humid, high-heat environment of a traditional sauna.
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