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Harvia Pro 20 24.1kW Wood Burning Sauna Stove Kit w/ Chimney, Sheath, Floor Protection and Stones

Harvia Pro 20 24.1 kW wood-burning stove with the WHP1500 chimney, WL550 sheath, WL100 bedding and 88 lb of stones, for 283–706 cu ft saunas

Current price $3,999
Original price $4,599
Save $600
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In stock

Estimated delivery

7–12 days after you order

  • Stove, chimney, sheath, bedding and stones in one order
  • Two boxes of AC3020 stones: the Pro 20's full 88 lb load
  • Wood-fired: no electrical hookup needed
Included with your heater purchase
The Sauna Mastery Protocol Digital Guide
The Sauna Mastery Protocol Digital Guide
Full-Value Freight Protection
Full-Value Freight Protection

Perfect for sauna rooms from 283 - 706 ft3

*Eligible returns must be requested within 30 days of delivery. Restocking and freight charges apply, and some items are final sale. See the Refund Policy.

Description

What is the Harvia Pro 20 kit with chimney, sheath, floor protection and stones?

The Harvia Pro 20 kit combines five parts: the Harvia Pro 20 (WKPR20M) 24.1 kW wood-burning sauna stove, Harvia's WHP1500 chimney kit in stainless steel, the WL550 three-sided protective sheath, the WL100 protective bedding and two 44 lb boxes of Harvia AC3020 stones. It is sized for sauna rooms of 283 to 706 cu ft. The kit price is the sum of the five parts.

The parts are matched to the stove: Harvia's Pro 20 manual names the WHP1500 chimney, the WL550 sheath and the WL100 bedding for it, and two boxes of AC3020 cover its 88 lb stone load. The Pro 20 burns firewood and needs no electrical connection. The Harvia Pro 20 is also sold on its own, and the Harvia wood-burning stove collection has every Harvia wood-burning stove Topture sells.

Harvia Pro 20 kit key features

  • Harvia Pro 20 stove, 24.1 kW, for sauna rooms of 283–706 cu ft (8–20 m³)
  • Harvia WHP1500 chimney kit in stainless steel: a 59.1" insulated chimney and a 39.4" smoke pipe
  • WL550 three-sided protective sheath: 2.4" to combustible walls at the sides and rear
  • WL100 protective bedding for a tile or combustible floor
  • Two 44 lb boxes of AC3020 stones: the Pro 20's full 88 lb stone load
  • Stove CE marked (EN 15821); chimney CE marked to EN 1856-1 (T600 N1 D Vm-L20070 G100)
What's Included

What's included in the Harvia Pro 20 kit?

Harvia Pro 20 stove (WKPR20M)

  • Harvia Pro 20 wood-burning sauna stove with its glass door, ash box and adjustable legs
  • Flue connection pipe, and a blocking plug for the connection opening you don't use
  • Soot-opening stoppers and a tool for opening the hot door and ash box
  • Installation and user manual

Harvia WHP1500 chimney kit

  • Double-wall insulated steel chimney, 59.1" (1.5 m) in two sections, 8.66" (220 mm) across
  • Single-wall stainless smoke pipe, 39.4" (1.0 m), cut to length
  • Rain cap
  • Rubber rain flange with its installation set, for roofs pitched 10° or more
  • Lead-through insulation and lead-through protector
  • Lead-through flange for the ceiling opening
  • Clamp
  • Installation instructions

Harvia WL550 protective sheath

  • Three-sided WL550 protective sheath in black-painted steel
  • Installation instructions

Harvia WL100 protective bedding

  • WL100 protective bedding, 18.5" × 26.2" (470 × 665 mm), black-painted aluminum-zinc-coated steel on adjustable feet
  • Installation instructions

Harvia AC3020 stones

  • Two 44 lb (20 kg) boxes, 88 lb in all, of Harvia AC3020 split-face olivine diabase stones, 4–6" (10–15 cm)

What you still need

  • The chimney installation through the ceiling and roof, following Harvia's WHP1500 instructions and your local code
  • On a combustible floor: non-combustible protection in front of the stove door
  • On a flat roof: the WHM24 rain flange (sold separately)
  • Optional: the Harvia WP220ST water heater, which Harvia lists for the Pro 20
  • Optional: the Harvia WZ115155 pipe adapter, for North American 6" chimney pipe
Specifications

Harvia Pro 20 stove specifications

Harvia Pro 20 (WKPR20M) in this kit, Harvia manual Y05-1330-1 and data sheet WKPR20M
Output 24.1 kW
Sauna room volume 283–706 cu ft (8–20 m³)
Minimum room height 82.3" (2,090 mm) (Harvia data sheet)
Top of the stove to the ceiling 51.2" (1,300 mm)
Dimensions 16.9" W × 20.1" D × 29.9–31.1" H (430 × 510 × 760–790 mm), with the adjustable legs
Legs Adjustable, 0–1.2" (0–30 mm)
Net weight 116.8 lb (53 kg)
Stones Up to 88 lb (40 kg) of 4–6" (10–15 cm) stones; the kit includes two 44 lb boxes of AC3020
Chimney connection Top or rear, 4.5" (115 mm); chimney class T600 with a flue at least 4.3" (110 mm) across; rear opening centered 22.0" (560 mm) above the floor
Firewood Up to 15.4" (390 mm) long, 3.1–5.9" (8–15 cm) across
Materials Steel; the outer casing is painted graphite black (Harvia); glass door
Electrical connection None; wood-fired
Certification CE marked (EN 15821)
Harvia part number WKPR20M (GTIN 6417659036528); earlier item code WK200
Warranty 2-year manufacturer warranty; stones are not covered

Harvia WHP1500 chimney kit specifications

Harvia WHP1500 in this kit (Harvia installation instructions Y05-0100 10/25)
Chimney 59.1" (1.5 m), double-wall, mineral-wool insulated, 8.66" (220 mm) outer diameter
Smoke pipe 39.4" (1.0 m), single-wall, cut to length; joins the 4.5" (115 mm) top opening of the Pro 20
Roof Pitched 10° or more; a flat roof needs the WHM24 rain flange, sold separately
Maximum total height 16.4 ft (5.0 m) with WHP500 or WHP1000 chimney extensions, sold separately; vertical installation only
Clearance to combustibles 3.94" (100 mm) from the insulated casing; 19.7" (500 mm) from the uninsulated smoke pipe
Below the ceiling At least 16.9" (430 mm) of insulated chimney visible
Flue-gas temperature class T600, up to 1,112°F (600°C)
Certification CE marked to EN 1856-1 (T600 N1 D Vm-L20070 G100)
Materials Stainless-steel chimney casing and smoke pipe; mineral-wool insulation
Warranty 2-year manufacturer warranty

Harvia WL550 sheath and WL100 bedding specifications

Harvia WL550 and WL100 in this kit (Harvia sheath instructions Y05-0384; bedding instructions Y05-0372)
WL550 size 19.6" × 22.4" × 32" (497 × 568 × 812 mm)
Distances with the WL550 fitted Sides and rear 2.4" (62 mm); front 16.6" (422 mm); sheath to wall 1.2" (30 mm)
WL100 size 18.5" × 26.2" (470 × 665 mm), 2.4–3.0" (60–75 mm) high on adjustable feet
Materials Black-painted steel sheath; black-painted aluminum-zinc-coated steel bedding
Warranty 2-year manufacturer warranty on each
Installation

How is the Harvia Pro 20 kit installed?

The Harvia Pro 20 stands on its adjustable legs on the WL100 bedding, with the WL550 sheath around it, and the WHP1500 chimney rises from the stove's top opening through the ceiling and roof. Harvia's manual says all local regulations apply, that the stove is not suitable for a shared flue, that no electrical devices, wires or combustible materials may sit within the safety distances, and that the local fire authorities can give detailed fire-safety requirements. Harvia's manuals, under Documents, give the step-by-step installation of the stove, the chimney, the sheath and the bedding.

What floor does the Harvia Pro 20 kit need?

The Harvia Pro 20 kit's WL100 bedding is the protection Harvia's manual asks for under the Pro 20 on a tile floor, whose adhesives and waterproofing do not resist the stove's heat, and on a floor made of combustible material. A combustible floor also needs non-combustible protection in front of the stove door, which the kit does not include. A bare concrete floor at least 2.4" (60 mm) thick needs no protection. The floor must be strong enough to carry the stove.

Harvia Pro 20 kit safety distances

Keep at least these distances between the Harvia Pro 20 and anything that can burn.

Harvia Pro 20 without a sheath (Harvia manual Y05-1330-1)
Top of the stove to the ceiling 51.2" (1,300 mm)
Sides to combustible material 11.8" (300 mm)
Rear to combustible material 11.8" (300 mm)
Front to combustible material 11.8" (300 mm)
To a masonry wall 2.0" (50 mm) if air can circulate in front and at one side; 3.9" (100 mm) in a recess
Harvia Pro 20 with the kit's WL550 sheath fitted (Harvia manual Y05-1330-1)
Sides 2.4" (62 mm)
Rear 2.4" (62 mm)
Front 16.6" (422 mm)
Sheath to wall 1.2" (30 mm)

With the WL550 fitted, the side and rear distances fall to 2.4" (62 mm) and the front distance grows to 16.6" (422 mm).

Connecting the kit's chimney

The kit's Harvia WHP1500 chimney kit joins the Pro 20's 4.5" (115 mm) top opening with a smoke pipe cut to length; the rear opening stays closed with the blocking plug. It installs vertically only, suits roofs pitched 10° or more, and needs 3.94" (100 mm) from its insulated casing and 19.7" (500 mm) from the uninsulated smoke pipe to anything that can burn. The WHP1500 page gives the full roof and ceiling requirements.

Does the Harvia Pro 20 kit need a first firing?

Yes, outdoors. Harvia's manual says to fire the Pro 20 once outside before its first sauna, until the paint on the stove stops smoking, and to load the stones only after it has cooled.

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Step 1

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We pair every heater with the controller, sensor, stones, and cable that actually work with it, so you don't have to cross-reference compatibility charts before you check out.

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When the heater, stones, and room are properly matched, you get the rolling heat and steam crack that make a true Finnish session.

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Your purchase includes thoughtful extras to help you get started and enjoy your sauna with confidence.

The Sauna Mastery Protocol
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The Sauna Mastery Protocol

The session times, temperatures, and weekly rhythm that turn a sauna into a habit you keep. Covers heat-up protocols and what to expect across your first 30 sessions. Sent to your inbox after purchase.

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Full-Value Freight Protection

Large orders ship fully insured. If freight arrives damaged, Topture helps coordinate the claim and replacement process with the carrier and manufacturer. Proper inspection and damage documentation at delivery are required. Most in-stock orders ship within 2–7 business days.

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What Topture Customers Say

Topture is rated 4.9/5 across 463 customer reviews

We thought about buying a sauna for years and finally did. We absolutely love it, especially in the winter. It’s incredibly easy to assemble with two people the whole family uses it.

Verified buyer

Ordered this sauna fall 2024 and we love it. No better feeling during a Minnesota winter. Lastly, I have to mention the customer service for this purchase has been like no other. Any questions or requests I had were addressed immediately by Topture. I got more than I expected from them and have already recommended them to several people looking for saunas. SO if you're thinking about it, JUST DO IT already..

Verified buyer

Thanks for the great service - greatly appreciated.

Verified buyer

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Buying a sauna involves more than choosing a model and clicking checkout. Heater sizing, electrical requirements, freight delivery, installation, and warranty support all matter.

Before you buy elsewhere

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Frequently Asked Questions

What is included in the Harvia Pro 20 kit?
The Harvia Pro 20 kit includes five parts: the Harvia Pro 20 (WKPR20M) 24.1 kW wood-burning sauna stove with its glass door, ash box and adjustable legs; Harvia's WHP1500 chimney kit in stainless steel, with a 59.1 in insulated chimney, a 39.4 in smoke pipe, rain cap, rain flange and ceiling lead-through parts; the WL550 three-sided protective sheath; the WL100 protective bedding; and two 44 lb boxes of Harvia AC3020 stones, the stove's full 88 lb load. Not included: the chimney installation, non-combustible protection in front of the door on a combustible floor, and the WHM24 rain flange a flat roof needs.
What size sauna does the 24.1 kW Harvia Pro 20 kit heat?
The Harvia Pro 20 kit's Pro 20 stove is rated at 24.1 kW and heats sauna rooms of 283–706 cu ft (8–20 m³), according to Harvia. Harvia adds 1.2 m³ for every square meter of uninsulated brick, glass, tile or concrete surface, about 3.9 cu ft per sq ft, and counts a glass door; multiply a solid-log sauna's volume by 1.5. The top of the stove needs at least 51.2 in (1,300 mm) to the ceiling, and Harvia's data sheet gives a minimum room height of 82.3 in. Larger rooms suit the Harvia Pro 26 or Pro 36.
What chimney comes with the Harvia Pro 20 kit, and does it fit my roof?
The Harvia Pro 20 kit includes Harvia's WHP1500 steel chimney kit in stainless steel: a 59.1 in (1.5 m) insulated chimney and a 39.4 in (1.0 m) smoke pipe cut to length, which joins the Pro 20's 4.5 in (115 mm) top opening. It installs vertically only and suits roofs pitched 10° or more; a flat roof needs the WHM24 rain flange, sold separately, and Harvia's WHP500 and WHP1000 extensions take it up to 16.4 ft. Keep the insulated casing 3.94 in and the smoke pipe 19.7 in from anything that can burn. It is CE marked to EN 1856-1.
How is the Harvia Pro 20 kit installed, and does it need electricity or floor protection?
The Harvia Pro 20 kit's stove stands on adjustable legs on the included WL100 bedding and needs no electrical connection. The bedding is what Harvia asks for under the Pro 20 on tile or a combustible floor; a combustible floor also needs non-combustible protection in front of the door, and bare concrete at least 2.4 in thick needs nothing. With the included WL550 sheath fitted, the stove needs 2.4 in to combustible walls at the sides and rear and 16.6 in at the front, and 51.2 in to the ceiling. Harvia's manual says local regulations apply and the local fire authorities can advise.
What has to be done before the first fire in the Harvia Pro 20 kit's stove?
The Pro 20 in the Harvia Pro 20 kit must be fired for the first time outdoors, Harvia's manual says, because the protective paint on the stove body smokes while it cures; the stove is ready for normal use once the smoking stops. Fit the smoke pipes for draught during this firing, load none of the kit's stones until the stove has cooled completely afterwards, and throw no water on it. Do not rub or sweep the painted surfaces until the heat-resistant paint has cured.
What firewood does the Harvia Pro 20 kit's stove burn, and how hot should the sauna get?
The Pro 20 in the Harvia Pro 20 kit takes firewood up to 15.4 in (390 mm) long and 3.1–5.9 in across, and Harvia declares loads of 6.6 lb (3.0 kg) to light the fire and 9.9 lb (4.5 kg) per refuelling. Start with pieces of 3.1–4.7 in and refuel with 4.7–5.9 in. Empty the ash box before each firing and keep the door closed while the fire burns. The stove has no thermostat, so the fire sets the heat: Harvia's rule of thumb is that a sauna over 212°F (100°C) is too hot, and several full loads of wood in a row overheat the sauna, the stove and the chimney and can start a fire.
How do you load and maintain the stones in the Harvia Pro 20 kit?
The Harvia Pro 20 kit includes two 44 lb boxes of Harvia AC3020 split-face olivine diabase stones, 4–6 in across, which fill the Pro 20's 88 lb (40 kg) stone space. Load them only after the outdoor first firing, once the stove is cold, with the larger stones at the bottom: Harvia warns that stones placed wrongly can heat nearby structures to dangerous temperatures even outside the safety distances. Rearrange the stones at least once a year and remove any smaller than 4 in or broken.
What problems do owners of the Harvia Pro 20 kit run into, and how are they avoided?
Most problems Harvia's manual lists for the stove in the Harvia Pro 20 kit trace back to the chimney, the wood or the stones. Smoke in the sauna or no draught points to a leaking flue connection, a cold flue, an extractor fan pulling air, a full ash box or blocked smoke canals. A sauna that will not heat is usually too big for the stove, has uninsulated walls or is fired with damp wood; stones that stay cool are often too small or broken. A smell on the first firings is the paint curing.
Who makes the Harvia Pro 20 kit, and what is it made of?
Every part of the Harvia Pro 20 kit is made by Harvia, the Finnish sauna manufacturer; Harvia US Inc. is its warrantor in North America. The Pro 20 stove has a graphite-black painted steel casing and a glass door and is CE marked to EN 15821; the WHP1500 chimney is stainless steel, CE marked to EN 1856-1; the WL550 sheath and WL100 bedding are black-painted steel. The stove measures 16.9 in wide, 20.1 in deep and 29.9–31.1 in high, and weighs 116.8 lb without stones.
What warranty does the Harvia Pro 20 kit have?
Harvia's manufacturer warranty covers each part of the Harvia Pro 20 kit for 2 years of family use: the Pro 20 stove, the WHP1500 chimney, the WL550 sheath and the WL100 bedding. The extra registration year Harvia offers applies to electric heaters only, and sauna stones are not covered. Harvia US Inc. is the warrantor in North America. Topture is an authorized Harvia retailer and assists with troubleshooting and warranty coordination.
How does the Harvia Pro 20 kit compare with buying the Pro 20 stove on its own?
The Harvia Pro 20 kit and the Pro 20 bought on its own are the same stove; the kit adds the stainless WHP1500 chimney, the WL550 sheath, the WL100 bedding and two boxes of AC3020 stones, at exactly the sum of their prices, so neither way costs less. Buying the stove alone lets you choose the black WHP1500M chimney, a masonry flue, the one-sided WL500 sheath or no sheath, and the Pro 20 ES, LS or RS with a water tank. The kit suits a first installation that needs all five parts.
Where can you buy the Harvia Pro 20 kit from an authorized dealer?
Topture is an authorized Harvia retailer and sells the Harvia Pro 20 kit, which combines the Pro 20 stove with the WHP1500 chimney, the WL550 sheath, the WL100 bedding and two boxes of stones, as well as each part on its own, with the WP220ST water heater and WZ115155 adapter as options. Topture adds Lifetime Expert Support, help with troubleshooting and warranty coordination, free shipping on orders over $200 within the continental US, financing through Shop Pay Installments at checkout, and a 30-day return window.
What does the Harvia Pro 20 kit cost in total, delivered?
The delivered cost of the Harvia Pro 20 kit from Topture is the kit price, which is exactly the Pro 20 stove, the WHP1500 chimney, the WL550 sheath, the WL100 bedding and two boxes of AC3020 stones added together, with no bundle discount. Topture has free shipping on orders over $200 within the continental US, so the kit ships free there, with Topture's full-value freight protection on freight. Budget separately for installing the chimney. Compare delivered totals, because some listings price the stove without its chimney or stones. Financing is available through Shop Pay Installments at checkout.

General Topture Questions

Where are you located, and where do you ship from?

Topture is an online retailer serving customers in the contiguous United States. The company is Topture LLC, a Wyoming limited liability company, and its registered business address is 30 N Gould St, Ste N, Sheridan, WY 82801.

Orders ship from manufacturer and distributor warehouses in the U.S. and Canada, and some products ship directly from the manufacturer in Europe. Each product page shows its estimated delivery time.

How much is shipping?

Orders over $200 ship free within the continental United States. Orders under $200 carry a small shipping fee.

Two exceptions: SaunaLife and ThermaSol products carry a freight charge at any order value, and sauna stones ordered without a heater ship at $60 per box because of their weight.

Every charge is shown at checkout before you pay.

Do you provide financing?

Absolutely! To view your financing offer, simply select Shop Pay Installments as your payment method at Step 3 of checkout.

You'll need to enter a debit card to receive your offer, but don’t worry—you can still back out before completing the purchase.

How long will it take for my items to arrive?

If your order is in stock, most orders ship within 2–7 business days of purchase. Transit time then depends on the distance from the warehouse and, for freight, on booking a delivery appointment.

For custom, pre-order or made-to-order items, the estimated delivery time frame is listed on the product page. Delivery dates are estimates, so please don't book installation labor until your order has arrived and been inspected.

What happens after I place my order?

As soon as you place your order, you'll receive a confirmation email with your order details—be sure to keep it for your records. Once your order ships, you'll receive another email with tracking information.

For freight deliveries, the carrier will call or text you to schedule an appointment once the shipment reaches their local terminal. Someone needs to be there to inspect the shipment and sign for it. Smaller parcels arrive by UPS or FedEx without an appointment.

Is there a warranty?

Yes. Products purchased through Topture include the applicable manufacturer’s warranty, subject to the manufacturer’s terms. You’ll find the warranty details for each product under the "Warranty" tab on its product page, and we help with troubleshooting and warranty coordination if an issue comes up.

Do you have a showroom?

We don’t have a showroom — we sell online. Our team is available by phone, email and chat to help you compare models, sizes and heaters, and we can send dimensions, installation manuals and electrical requirements before you buy.

Where do you deliver to?

We deliver throughout the 48 contiguous states, with curbside freight delivery for large items. Free shipping and standard rates apply there only. Alaska, Hawaii, Puerto Rico, other U.S. islands and Canada are quoted separately, depending on the brand and model. We can't ship freight or oversized items to P.O. boxes.

Do you ship internationally?

International Shipping

For many products, yes, including to Canada, by custom quote. Email contact@topture.com with the product and your address before you order; availability and cost depend on the brand and model. Any duties, taxes and customs fees are your responsibility.

Shipping to Hawaii, Alaska, and Puerto Rico

Free shipping applies to the continental United States only. Shipping to Alaska, Hawaii, Puerto Rico and other U.S. islands is quoted separately and depends on the brand and model. Email contact@topture.com for a quote before you order.

Your sauna heater package, done the right way.

  • Stove, chimney, sheath, bedding and stones in one order
  • Two boxes of AC3020 stones: the Pro 20's full 88 lb load
  • Wood-fired: no electrical hookup needed
Included with your heater purchase
The Sauna Mastery Protocol Digital Guide
The Sauna Mastery Protocol Digital Guide
Full-Value Freight Protection
Full-Value Freight Protection

*Eligible returns must be requested within 30 days of delivery. Restocking and freight charges apply, and some items are final sale. See the Refund Policy.