Harvia Pro 20 Wood-Burning Sauna Heater Package
Product Description
The Harvia Pro 20 is a wood-burning sauna heater package built around a large-capacity steel stove with a glass door. Load the firebox, light the wood, and watch the flames while the Pro 20 heats a full-size sauna room.
The Pro 20 suits sauna rooms of 8 to 20 cubic meters (283 to 706 cubic feet). This package pairs the stove with a chimney kit, floor bedding, a three-sided sheath panel, a smoke pipe, and 88 pounds of split-face stones. Choose a black powder-coated or stainless steel chimney, and add the WP220ST water heater tank when you want hot water off the stove.
Per Harvia, the Pro 20 delivers 24.1 kW of output and holds up to 40 kg (88 lb) of stones, warming a large room through a glass door that shows the fire. The stove connects at the top or rear through a 115 mm flue and stands on adjustable legs. This is a wood-burning appliance: install it with the required clearances to combustible materials, a non-combustible floor base, and a compliant chimney, and have a qualified installer confirm the setup against local building codes.
We confirm your exact shipping timeline within 1-2 business days of your order - or email us before you buy for the current lead time on this product. Your order ships with free standard shipping to the lower 48. The Pro 20 carries a 2-year limited warranty from Harvia for family use. Questions before you order? Email support@thetherapeuticpatio.com or call (225) 535-3580.
Ideal for: larger home and backyard saunas that want a high-output wood-fired heater with a viewing door.
Harvia: Finnish sauna heat since 1950.
Features
- 24.1 kW output: heats a sauna room of 8 to 20 cubic meters (283 to 706 cubic feet).
- Glass door: watch the fire through the stove door.
- Large steel stove: the WKPR20M Pro 20 in a black steel frame.
- Complete package: stove, chimney kit, floor bedding, three-sided sheath panel, smoke pipe, and 88 lb of split-face stones.
- Chimney finish choice: black powder-coated or stainless steel chimney kit and extension.
- Water heater option: add the WP220ST 22-liter stainless tank for hot water from the stove.
- Top or rear flue: 115 mm connection at the top or rear of the stove.
- Adjustable legs: level the stove on uneven floors.
- Split-face stones included: AC3020 10-15 cm stones, two boxes (88 lb).
- Firewood up to 39 cm: accepts logs up to 39 cm long, per the manual.
- EN 15821 tested: multi-firing wood-burning sauna stove tested to EN 15821.
- Warranty from Harvia: 2-year limited warranty for family use.
Specifications
Construction and Installation
- Stove: Harvia Pro 20 (WKPR20M), black steel frame with a glass door
- Main material: steel
- Flue connection: top or rear, 115 mm diameter (minimum flue inner diameter 110 mm)
- Legs: adjustable
- Firewood length: up to 39 cm
- Installation: wood-burning appliance; requires clearances to combustible materials per the manual, a non-combustible floor base, and a compliant chimney; use a qualified installer per local building codes
- Certification: EN 15821 (Declaration of Performance)
Fuel and Output
- Fuel: wood (solid wood logs)
- Output: 24.1 kW
- Sauna room size: 8 to 20 cubic meters (283 to 706 cubic feet)
- Not an electrical appliance; no wiring required
Controls
- Manual wood firing; no electrical controls
Dimensions and Capacity
- Stove: approximately 760 mm high x 430 mm wide x 510 mm deep (29.9 x 16.9 x 20.1 in), plus adjustable legs
- Stove net weight: 53 kg (116.9 lb)
- Stone capacity: up to 40 kg (88 lb); stone size 10-15 cm
- Package weight: approximately 328 lb (149 kg), summed from Harvia IDM 6.22.2026 component weights (water heater and smoke pipe weights not published by Harvia; estimated)
What's Included vs. Sold Separately
- Included in the package: Pro 20 stove (WKPR20M) with glass door, ash box, grill, and adjustable legs; chimney kit (WHP1500M black or WHP1500 stainless); chimney extension (WHP1000M or WHP1000); WL100 floor bedding; WL550 three-sided sheath panel; WZ11520 smoke pipe; 88 lb (two boxes) of AC3020 split-face stones; WP220ST water heater tank when Water Heater is set to Included.
- Options on this page: Chimney Finish (Black / Stainless); Water Heater (Included / Not Included).
- Sold separately, say if you want it: WL500 one-side sheath (an alternative to the included WL550), WL110 large bedding, WZ020130 radiation cover, WZ020115 lead-through flange, WZ011115 masonry connector, extra AC3020 stone boxes, WHP500 or WHP500M extensions.
Product Manuals
- Harvia WKPR20M Owner's Manual (PDF)
- Harvia WP220ST Owner's Manual (PDF)
- Harvia WKPR20M Data Sheet (PDF)
- Harvia WKPR20M Safety Distances Drawing (PDF)
- Harvia WKPR20M Smoke Pipe Dimension Drawing (PDF)
- Harvia WKPR20M Spare Parts Drawing (PDF)
- Harvia WKPR20M Declaration of Performance (PDF)
- Harvia WKPR20M Warranty (PDF)
Choose options
Product Description
The Harvia Pro 20 is a wood-burning sauna heater package built around a large-capacity steel stove with a glass door. Load the firebox, light the wood, and watch the flames while the Pro 20 heats a full-size sauna room.
The Pro 20 suits sauna rooms of 8 to 20 cubic meters (283 to 706 cubic feet). This package pairs the stove with a chimney kit, floor bedding, a three-sided sheath panel, a smoke pipe, and 88 pounds of split-face stones. Choose a black powder-coated or stainless steel chimney, and add the WP220ST water heater tank when you want hot water off the stove.
Per Harvia, the Pro 20 delivers 24.1 kW of output and holds up to 40 kg (88 lb) of stones, warming a large room through a glass door that shows the fire. The stove connects at the top or rear through a 115 mm flue and stands on adjustable legs. This is a wood-burning appliance: install it with the required clearances to combustible materials, a non-combustible floor base, and a compliant chimney, and have a qualified installer confirm the setup against local building codes.
We confirm your exact shipping timeline within 1-2 business days of your order - or email us before you buy for the current lead time on this product. Your order ships with free standard shipping to the lower 48. The Pro 20 carries a 2-year limited warranty from Harvia for family use. Questions before you order? Email support@thetherapeuticpatio.com or call (225) 535-3580.
Ideal for: larger home and backyard saunas that want a high-output wood-fired heater with a viewing door.
Harvia: Finnish sauna heat since 1950.
Features
- 24.1 kW output: heats a sauna room of 8 to 20 cubic meters (283 to 706 cubic feet).
- Glass door: watch the fire through the stove door.
- Large steel stove: the WKPR20M Pro 20 in a black steel frame.
- Complete package: stove, chimney kit, floor bedding, three-sided sheath panel, smoke pipe, and 88 lb of split-face stones.
- Chimney finish choice: black powder-coated or stainless steel chimney kit and extension.
- Water heater option: add the WP220ST 22-liter stainless tank for hot water from the stove.
- Top or rear flue: 115 mm connection at the top or rear of the stove.
- Adjustable legs: level the stove on uneven floors.
- Split-face stones included: AC3020 10-15 cm stones, two boxes (88 lb).
- Firewood up to 39 cm: accepts logs up to 39 cm long, per the manual.
- EN 15821 tested: multi-firing wood-burning sauna stove tested to EN 15821.
- Warranty from Harvia: 2-year limited warranty for family use.
Specifications
Construction and Installation
- Stove: Harvia Pro 20 (WKPR20M), black steel frame with a glass door
- Main material: steel
- Flue connection: top or rear, 115 mm diameter (minimum flue inner diameter 110 mm)
- Legs: adjustable
- Firewood length: up to 39 cm
- Installation: wood-burning appliance; requires clearances to combustible materials per the manual, a non-combustible floor base, and a compliant chimney; use a qualified installer per local building codes
- Certification: EN 15821 (Declaration of Performance)
Fuel and Output
- Fuel: wood (solid wood logs)
- Output: 24.1 kW
- Sauna room size: 8 to 20 cubic meters (283 to 706 cubic feet)
- Not an electrical appliance; no wiring required
Controls
- Manual wood firing; no electrical controls
Dimensions and Capacity
- Stove: approximately 760 mm high x 430 mm wide x 510 mm deep (29.9 x 16.9 x 20.1 in), plus adjustable legs
- Stove net weight: 53 kg (116.9 lb)
- Stone capacity: up to 40 kg (88 lb); stone size 10-15 cm
- Package weight: approximately 328 lb (149 kg), summed from Harvia IDM 6.22.2026 component weights (water heater and smoke pipe weights not published by Harvia; estimated)
What's Included vs. Sold Separately
- Included in the package: Pro 20 stove (WKPR20M) with glass door, ash box, grill, and adjustable legs; chimney kit (WHP1500M black or WHP1500 stainless); chimney extension (WHP1000M or WHP1000); WL100 floor bedding; WL550 three-sided sheath panel; WZ11520 smoke pipe; 88 lb (two boxes) of AC3020 split-face stones; WP220ST water heater tank when Water Heater is set to Included.
- Options on this page: Chimney Finish (Black / Stainless); Water Heater (Included / Not Included).
- Sold separately, say if you want it: WL500 one-side sheath (an alternative to the included WL550), WL110 large bedding, WZ020130 radiation cover, WZ020115 lead-through flange, WZ011115 masonry connector, extra AC3020 stone boxes, WHP500 or WHP500M extensions.
Product Manuals
- Harvia WKPR20M Owner's Manual (PDF)
- Harvia WP220ST Owner's Manual (PDF)
- Harvia WKPR20M Data Sheet (PDF)
- Harvia WKPR20M Safety Distances Drawing (PDF)
- Harvia WKPR20M Smoke Pipe Dimension Drawing (PDF)
- Harvia WKPR20M Spare Parts Drawing (PDF)
- Harvia WKPR20M Declaration of Performance (PDF)
- Harvia WKPR20M Warranty (PDF)
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Free standard shipping on every order to the lower 48 states. We confirm your delivery timeline within 1–2 business days of your order.
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