Harvia Pro 20 SS WH Package – 24 kW Stainless Steel Wood‑Burning Sauna Stove Kit
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The Harvia Pro 20 SS WH Wood-Burning Sauna Stove Package is a complete wood-fired sauna heating kit built around the 24 kW Harvia Pro 20. It combines the stove, safety components, stainless-steel chimney system, chimney extension, 22-liter water heater, smoke pipe, and sauna stones into one coordinated package.
Designed for sauna rooms approximately 283–706 cubic feet, the Pro 20 is an excellent option for medium-size traditional saunas where strong wood-fired heat, practical hot-water production, and a complete venting solution are priorities.
This package is especially compelling for new sauna builds because it reduces the need to source the stove, chimney, protective accessories, water heater, and stone load separately.
What Comes With the Harvia Pro 20 SS WH Package?
The package includes:
- Harvia Pro 20 wood-burning sauna stove
- WL100 protective bedding
- WL550 full protective sheath
- WHP1500 stainless-steel chimney kit
- WHP1000 stainless-steel chimney extension
- WP220ST 22-liter stainless-steel water heater
- WZ11520 smoke pipe
- Approximately 88 lb of olivine diabase sauna stones
For buyers who want a complete Harvia wood-burning sauna stove kit with a water heater, this is one of the most comprehensive Pro 20 configurations.
24 kW Wood-Fired Heat
Designed for medium-size sauna rooms approximately 283–706 ft³ and traditional wood-fired sauna use.
22 L Water Heater
The included WP220ST chimney-mounted water heater provides hot water while the sauna stove is operating.
Complete Installation Package
Includes major protective, chimney, water-heating, and stone components matched around the Pro 20.
Why Choose the Harvia Pro 20?
The Harvia Pro 20 is one of Harvia's classic wood-burning sauna heaters. It is designed for medium-size sauna rooms and combines a substantial fire chamber, generous stone compartment, adjustable feet, and a glass firebox door that lets the glow of the fire become part of the sauna atmosphere.
Harvia rates the current Pro 20 family at approximately 24.1 kW for sauna rooms from 283 to 706 cubic feet. The heater holds approximately 88 lb of sauna stones.
The stove uses a graphite-black steel body with stainless-steel elements and is designed for floor installation.
Harvia Pro 20 Package Components
Harvia Pro 20 Wood-Burning Stove
The heart of the package is the Harvia Pro 20, a wood-burning heater designed for vigorous sauna bathing in medium-size sauna rooms.
- Approx. 24.1 kW output
- 283–706 ft³ recommended room volume
- Approx. 88 lb stone capacity
- Adjustable feet
- Cast-iron-framed glass door
- Top and rear flue connection options
WL100 Protective Bedding
Provides a protective foundation beneath the stove and helps protect combustible or heat-sensitive flooring when installed according to Harvia requirements.
WL550 Protective Sheath
The WL550 is designed specifically for Harvia Pro-series wood-burning heaters. It attaches around the stove and can considerably reduce required safety distances to combustible materials.
WHP1500 Stainless Chimney Kit
The package includes Harvia's stainless-steel chimney system for routing combustion gases safely through the sauna structure.
WHP1000 Chimney Extension
Adds approximately 1000 mm of vertical chimney length when additional height is required by the building or roof configuration.
WP220ST 22 L Water Heater
The stainless-steel chimney-mounted water heater uses heat from the flue to warm approximately 22 liters of water during sauna operation.
WZ11520 Smoke Pipe
Connects the stove and water-heater/chimney components as part of the complete venting configuration.
88 lb of Sauna Stones
The package includes approximately 88 lb of split-face olivine diabase sauna stones for loading the Pro 20's stone compartment.
Harvia Pro 20 Specifications
| Brand | Harvia |
|---|---|
| Package | Pro 20 SS WH Package |
| Package SKU | PRO20-PKG-SS-WH |
| Fuel | Wood |
| Power Output | Approx. 24.1 kW |
| Recommended Sauna Volume | 283–706 ft³ (8–20 m³) |
| Installation | Floor mounted |
| Stove Color | Graphite black with stainless-steel components |
| Stove Width | Approx. 16.9" |
| Stove Depth | Approx. 20" |
| Stove Height | Approx. 29.9"–31.1" |
| Stone Capacity | Approx. 88 lb (40 kg) |
| Recommended Stone Size | Approximately 10–15 cm |
| Water Heater Capacity | 22 liters |
| Chimney Kit | WHP1500 stainless steel |
| Chimney Extension | WHP1000 stainless steel |
Verify current manuals, safety distances, chimney requirements, and local building and fire codes before installation.
What Size Sauna Is the Harvia Pro 20 For?
Harvia rates the Pro 20 for sauna rooms approximately 283–706 cubic feet.
That range makes it suitable for many medium-size residential sauna rooms, but room volume is only the starting point when sizing a wood-burning heater.
Glass doors, windows, stone walls, tile, masonry, and other uninsulated surfaces can increase the effective sauna volume and may require additional heater capacity.
Why Add the WP220ST Water Heater?
The WP220ST adds a practical feature that many traditional wood-fired sauna owners appreciate: hot water without needing a separate electric water-heating appliance in the sauna building.
The 22-liter tank is mounted as part of the flue system and uses heat from the stove's exhaust gases to warm the water.
This can be especially useful in cottage saunas, outdoor sauna buildings, and remote installations where hot water may otherwise be limited.
Sauna Stones and Löyly
The Pro 20 holds approximately 88 lb of sauna stones.
Water poured onto the heated stones creates löyly, the wave of steam and humidity central to the traditional Finnish sauna experience.
Load stones loosely enough to preserve airflow through the heater. Do not wedge stones tightly together or block the internal air passages.
Inspect sauna stones periodically for cracking and settling, and re-stack or replace them when needed.
WL550 Protective Sheath and Safety Distances
Wood-burning sauna heaters require specific clearances from combustible walls, benches, and other materials.
The included WL550 protective sheath is designed and approved for Harvia Pro 20-family wood-burning heaters. Harvia states that it can considerably reduce the required safety distance to combustible materials. 1
This can provide more flexibility when fitting the heater into a smaller sauna or coordinating benches and walls around the stove.
Stainless-Steel Chimney System
This Pro 20 package includes the WHP1500 stainless-steel chimney kit plus the WHP1000 stainless-steel extension.
Together, these provide a coordinated Harvia chimney foundation for routing the wood stove exhaust vertically through the sauna structure.
Final chimney height and configuration depend on the sauna building, roof construction, penetration location, surrounding structures, and local fire and building-code requirements.
Additional components may still be necessary in some installations. Do not assume that every sauna building will use an identical chimney configuration.
Who Should Buy the Harvia Pro 20 SS WH Package?
- Buyers building a new wood-fired sauna
- Sauna rooms approximately 283–706 ft³
- Buyers who want a traditional wood-burning sauna experience
- Cottage and outdoor sauna owners who value an integrated hot-water solution
- Buyers who want Harvia safety, chimney, and stove components bundled together
- Homeowners who prefer a complete kit instead of sourcing each component individually
Who Might Prefer a Different Sauna Heater?
- Buyers who want automatic digital or Wi-Fi temperature control
- Properties where wood-burning appliances are restricted
- Sauna rooms outside the Pro 20's recommended volume range
- Buyers who do not want to manage firewood, ash, or chimney maintenance
- Installations where a safe chimney route cannot be created
Harvia Pro 20 vs. Harvia Legend 150
Both are traditional Harvia wood-burning sauna heaters, but they serve somewhat different sauna sizes and bathing preferences.
| Feature | Harvia Pro 20 | Harvia Legend 150 |
|---|---|---|
| Output | Approx. 24.1 kW | 16 kW |
| Sauna Volume | 283–706 ft³ | 212–459 ft³ |
| Stone Capacity | Approx. 88 lb | Approx. 264 lb |
| Design Priority | Powerful traditional heater for medium rooms | Very large exposed stone mass |
| Best Fit | Larger medium-size sauna rooms | Smaller rooms where high stone mass is desired |
If you prioritize an exceptionally large exposed stone mass and your sauna falls within the smaller Legend sizing range, compare our Harvia Legend 150 Package .
Wood-Burning vs. Electric Sauna Heater
| Consideration | Harvia Pro 20 | Electric Sauna Heater |
|---|---|---|
| Heat Source | Firewood | Electricity |
| Controls | Manual fire management | Thermostat or digital controls |
| Chimney Required | Yes | No |
| Electrical Heater Circuit | No | Usually yes |
| Experience | Traditional wood-fired sauna | Convenient automated heating |
| Best For | Traditional sauna enthusiasts | Convenience-focused owners |
Installation Planning
A wood-burning sauna system should be planned as a complete installation rather than treating the heater as an isolated product.
- Calculate the sauna's effective volume
- Account for glass, masonry, and other uninsulated surfaces
- Verify stove safety clearances
- Confirm floor protection requirements
- Plan bench locations around the stove safety zone
- Plan the chimney route before construction is complete
- Verify roof penetration and chimney support requirements
- Confirm whether the included chimney extension provides sufficient height
- Plan safe access to the water heater and tap
- Follow local building and fire codes
Planning a Wood-Fired Sauna?
The right heater depends on more than square footage. Room volume, glass area, wall materials, ceiling height, heater placement, safety distances, and chimney routing all matter.
Why Buy the Complete Harvia Pro 20 Package?
The main advantage of this package is coordination. A wood-fired sauna installation typically requires far more than the stove itself.
This configuration combines:
- Heater
- Protective bedding
- Protective sheath
- Chimney system
- Chimney extension
- Smoke pipe
- Water heater
- Sauna stones
That makes it an especially strong choice for buyers starting a new sauna project who want the major Harvia components specified in one purchase.
Why Buy Harvia From My Luxury Home Spa?
- Authorized Harvia dealer support
- Manufacturer warranty backing
- Help reviewing sauna room sizing
- Guidance matching heater and safety accessories
- Help understanding chimney components and package contents
- Freight delivery coordination
- Veteran-owned, U.S.-based customer support
- Secure online checkout
Explore More Sauna Heating Options
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- Sauna Installation Guide
Harvia Pro 20 Package FAQs
What comes with the Harvia Pro 20 SS WH package?
The package includes the Harvia Pro 20 wood-burning stove, WL100 bedding, WL550 protective sheath, WHP1500 stainless chimney, WHP1000 chimney extension, WP220ST 22-liter water heater, WZ11520 smoke pipe, and approximately 88 lb of sauna stones.
What size sauna is the Harvia Pro 20 for?
Harvia rates the Pro 20 for sauna rooms approximately 283–706 cubic feet, or 8–20 cubic meters. Glass, masonry, and other uninsulated surfaces can increase effective room volume.
How powerful is the Harvia Pro 20?
Harvia lists the Pro 20 at approximately 24.1 kW.
How many sauna stones does the Pro 20 hold?
The Pro 20 holds approximately 88 lb, or 40 kg, of sauna stones.
Does this package include a water heater?
Yes. The package includes the WP220ST stainless-steel 22-liter water heater.
Does the Harvia Pro 20 require electricity?
The sauna stove itself is wood fired and does not use an electric heating element. Your sauna building may still require electricity for lighting, ventilation, or other equipment.
Does the Pro 20 require a chimney?
Yes. The Pro 20 is a wood-burning stove and requires a properly designed chimney and flue system. This package includes Harvia chimney components, but final requirements depend on the building and local code.
What does the WL550 protective sheath do?
The WL550 is designed for Harvia Pro-series wood-burning heaters and helps reduce required safety distances to combustible materials when installed according to Harvia instructions.
Can the Harvia Pro 20 heat water?
In this package, yes. The included WP220ST chimney-mounted water heater captures heat from the flue and uses it to warm approximately 22 liters of water.
Can I install the Harvia Pro 20 myself?
Requirements vary by jurisdiction. Because the installation involves a wood-burning appliance, chimney penetration, fire clearances, and potentially structural work, professional installation or inspection may be required or strongly advisable.
Build a Complete Wood-Fired Sauna With the Harvia Pro 20
For medium-size sauna rooms, the Harvia Pro 20 SS WH package provides a comprehensive starting point with the heater, chimney system, water heater, protective accessories, and stones already coordinated.
Before ordering, confirm your room volume, wall materials, glass area, heater location, and chimney route.
Harvia Manuals & Warranty
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FAQs
Shipping & Delivery
Free shipping available on select orders. White-glove delivery and setup can be arranged at an additional cost in most areas. We'll confirm your preferred date after purchase.
Warranty
Full manufacturer warranty, registered at purchase. Need help with a claim? Our U.S. support team handles it directly with the brand.
Returns
New, uninstalled items can be returned within the brand's policy window. We'll help coordinate pickup and any restocking requirements.
Installation & Power
Most saunas/hot tubs require dedicated circuits. We provide spec sheets and can recommend licensed installers in your area.
