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✓ Authorized Harvia Dealer since 2023
The Harvia Stainless Steel Water Tank Heater is Harvia’s Stove-mounted water tank heater for wood-burning sauna installs. It captures otherwise-wasted chimney or stove heat and turns it into usable hot water during the sauna session — water for the shower-off after, for pouring on the stones, or for the rinse-down at the end.
This is standard practice in traditional Finnish sauna. Run the stove, get hot water for free. In a well-insulated sauna room the water heater is producing hot water the entire session with no additional wood burn.
Why Buy From RecovAthlete
We’re an authorized Harvia dealer. Water heaters are specifically sized to the stove family and flue geometry. Mixing a non-Harvia water heater onto a Harvia flue is a guaranteed install headache.
Call 866-861-6317 with your stove model and flue configuration — we’ll confirm the right water heater model before your order ships.
“In a properly-designed sauna, hot water for the post-session rinse shouldn’t cost extra fuel. The stove is already running — capture the flue or body heat and use it.”
Best For
Not Ideal For
IMPORTANT: Compatibility
Mounts directly to the stove body, using the stove’s radiant and conductive heat to warm the tank. Compatible with Harvia wood-burning stoves that have the factory-specified mounting geometry.
Call 866-861-6317 to confirm your stove supports stove-body mount.
| Model | WP220ST |
| Type | Stove-mounted water tank heater |
| Mounting | Stove-mounted — mounts to the stove body |
| Construction | Stainless steel |
| Position | Mounted directly to stove body |
| Heat Source | Stove body conduction and radiation |
| Water Capacity | Standard capacity — see install manual for exact volume |
| Compatible With | Harvia wood-burning sauna stoves |
| Manufacturer Warranty | Harvia factory warranty |
Water heaters ship parcel or LTL from US distributor. Standard lead time 5–10 business days. Before ordering, confirm your plumbing plan supports inlet and hot-water draw from the tank position. Call 866-861-6317 with questions.
The Investment Frame
A wood-burning sauna that produces free hot water during the session is a fuel-efficient install. Over a cabin’s typical 20–30 year life, the cumulative energy savings on hot water alone add up to more than the water heater cost.
No. Water heaters capture heat from the wood stove body or chimney flue. Electric heaters don’t produce a flue heat source to capture.
Varies by stove size and session length. A standard Harvia wood stove running for a 2-hour session typically produces enough hot water for 2–4 rinse-downs. Exact output is in the Harvia install manual.
Yes. Water inlet and hot water draw require standard plumbing connections. Your sauna builder or plumber handles this as part of the install.
No measurable effect. The water heater captures heat that would otherwise exit the chimney or radiate unused — it’s efficiency recovery, not heat theft.
Pipe-mounted (WP250LD) uses chimney flue heat and is typically more space-efficient. Stove-mounted (WP220ST) uses stove body heat and may warm water faster. Choice depends on stove geometry and install layout — call us for help.
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Secure Your Sauna Experience with RecovAthlete's' Harvia Electric Heater Warranty
Enjoy peace of mind with your Harvia Electric Sauna Heater purchase, backed by RecovAthlete's comprehensive limited warranty. This commitment guarantees that your sauna heater will be protected against defects in materials and workmanship, ensuring a seamless and worry-free experience.
Key Features of Your Warranty:
Coverage for Defects: Rest assured knowing that any defects in materials and workmanship are covered for a specified period. This includes one year for heating elements (coils) and five years for other sauna heater components from the date of delivery.
Exclusive to Original Purchaser: This warranty is specifically tailored to protect you, the original consumer, emphasizing our commitment to your satisfaction.
Variety of Remedies Available: In case of any defects, RecovAthlete offers multiple solutions:
Shipping Fees Covered for Returns: If returning the defective product is necessary, we'll handle the shipping costs, ensuring a hassle-free process.
Important Warranty Details:
Exclusions: Note that the warranty does not cover damages due to transportation, storage, improper use, lack of maintenance, unauthorized repairs, and wear and tear.
How to Claim: Simply contact our after-sales team at info@recovathlete.com with product details and a description of the defect during the warranty period.
Limitation of Liability: While we strive for excellence, our liability is limited to the actual amount paid for the defective product, excluding consequential or incidental damages.
By choosing Harvia Electric Sauna Heaters from RecovAthlete, you're not just buying a product; you're investing in a reliable and stress-free sauna experience. Our warranty is designed to ensure that your satisfaction remains our top priority.
Have Questions? Talk to Our Equipment Team.
We respond within 2 hours.
US & Canada shipping. Financing available.

