Harvia Stainless Steel Water Tank Heater
Harvia WP220-ST Pipe Model Water Heater | 22L Stainless Steel | Wood-Burning Sauna Stoves
The Harvia WP220-ST is a 22-liter stainless steel water heater that mounts directly onto the smoke pipe of your wood-burning sauna stove. It heats water passively using exhaust heat from the stove — no electricity required. Compatible with all wood-heated Harvia sauna stoves except the Harvia 50 model, it’s a space-saving, efficient solution for traditional Finnish sauna hot water.
- Authorized Retailer of Harvia
- Manufacturer Warranty Included
- Free Shipping to the Contiguous US
- Secure Checkout
- U.S.-Based Customer Support
Product Overview
The WP220-ST sits on top of your wood-burning stove’s smoke pipe, which runs directly through the tank. As the stove fires, exhaust heat transfers through the pipe wall and into the water — heating 22 liters quickly and efficiently without any additional power source.
Its compact, pipe-mounted design keeps your sauna footprint clean and uncluttered. Hot water is always ready when you need it for löyly or post-sauna rinsing, making it an ideal addition to any traditional wood-burning sauna setup.
Compatibility note: Compatible with all wood-heated Harvia sauna stoves. Not compatible with the Harvia 50 model.
Key Features
- 22-liter stainless steel water tank
- Pipe-mounted design — mounts directly on the stove smoke pipe
- Heats water using stove exhaust heat — no electricity required
- Smoke pipe runs through the tank for rapid, efficient heat transfer
- Space-saving design integrates seamlessly with the stove
- Compatible with all wood-heated Harvia stoves (except Harvia 50)
- Stainless steel construction for durability and corrosion resistance
Capacity & Compatibility
- Water capacity: 22 liters
- Compatible with all wood-heated Harvia sauna stoves
- Not compatible with the Harvia 50 sauna stove
Specifications
| SKU | WP220ST |
| Model | WP220-ST |
| Material | Stainless steel |
| Water Capacity | 22 liters |
| Installation | Mounted on stove smoke pipe |
| Power Required | None — heated by stove exhaust |
| Compatible Stoves | All wood-heated Harvia stoves (except Harvia 50) |
What’s Included
- Harvia WP220-ST pipe model water heater
Warranty
- 2-Year Limited Warranty (Consumer Use)
Shipping & Delivery
This product includes free shipping within the contiguous United States. Ships via standard parcel service. Please inspect your shipment upon delivery and note any visible damage before signing.
About the Brand
Harvia is one of the world’s leading sauna and spa companies, founded in Finland in 1950. Known for their engineering precision and Scandinavian design philosophy, Harvia products are trusted by homeowners and professionals worldwide. Every product is designed and manufactured to meet the highest standards of safety, performance, and durability.
Complete Your Wellness Setup
Complete your wood-burning sauna setup with these compatible accessories:
- Harvia Rounded Olivine Sauna Stones, 5–10 cm, 33 lbs — compatible sauna stones for wood-burning stoves
- Harvia AC3000 Split-Face Sauna Stones, 5–10 cm — split-face alternative for richer steam
- Harvia Steel Sauna Accessories Set SA006 — bucket, ladle & thermo-hygrometer
- Harvia Legend Sauna Bucket — black steel with thermo-aspen handle
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