Harvia

Harvia 50 (Pro 50) 40kW Wood Burning Sauna Stove | WK500

Harvia 50 (WK500) 40 kW wood-burning sauna stove for large saunas of 706–1,766 cu ft, with 264.6 lb of stones and a 5.5 in (140 mm) chimney connection

$7,587

$8,799

Save $1,212

In stock

Estimated delivery

7–12 days after you order

40 kW for rooms of 706–1,766 cu ft
Up to 264.6 lb of 4–6" stones: six 44 lb boxes
Top or rear 5.5" (140 mm) chimney connection

The Sauna Mastery Protocol Digital Guide

Full-Value Freight Protection

Perfect for sauna rooms from 706 - 1766 ft³

Select Stones

Required for Operation

Harvia Split-Face Olivine Diabase Sauna Heater Stones 4-6" / 44lbs | AC3020 | 6 Boxes
$372

Quantity

Curbside freight delivery by appointment; an adult must sign for the shipment. How it works

Secure checkout
30-day return window*
2-year manufacturer warranty

*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 50 wood-burning sauna stove?

The Harvia 50 (WK500) is a 40 kW wood-burning sauna stove for large sauna rooms of 706 to 1,766 cu ft. It stands on the floor with no adjustable legs, has a black-painted steel body and a glass door, holds up to 264.6 lb (120 kg) of 4–6" stones, and connects to the chimney at the top or the rear through a 5.5" (140 mm) opening, larger than the 4.5" (115 mm) opening on Harvia's other wood stoves. It burns firewood and needs no electrical connection.

Harvia names this stove the Harvia 50; Topture has listed it as the Harvia Pro 50. The Harvia Pro 36, at 31 kW for rooms of 494–1,271 cu ft, is the largest stove in Harvia's Pro range, and the Harvia wood-burning stove collection has every Harvia wood-burning stove Topture sells.

Harvia 50 key features

40 kW for sauna rooms of 706–1,766 cu ft (20–50 m³)
Up to 264.6 lb (120 kg) of 4–6" stones: six 44 lb boxes
Top or rear chimney connection, 5.5" (140 mm)
Black-painted steel body and glass door
No adjustable legs
Takes firewood up to 24.0" (610 mm) long
CE marked (EN 15821)
2-year manufacturer warranty

Specifications

Does the Harvia 50 fit my sauna?

The Harvia 50 heats sauna rooms of 706 to 1,766 cu ft (20–50 m³). Harvia's manual adds 1.2 m³ for every square meter of uninsulated brick, glass block, glass, concrete or tile wall, about 3.9 cu ft per sq ft, and a glass door counts: its example is a 10 m³ room with a glass door, which needs the output of a 12 m³ room. Multiply the volume of a solid-log sauna by 1.5. The Harvia 50 needs at least 47.2" (1,200 mm) between the top of the stove and the ceiling. Harvia's data sheet gives a minimum sauna room height of 88.6" (2,250 mm).

Harvia 50 specifications

Harvia 50 (WK500), Harvia manual Y05-0128 and data sheet WK500
Output	40 kW
Sauna room volume	706–1,766 cu ft (20–50 m³)
Minimum room height	88.6" (2,250 mm) (Harvia data sheet)
Top of the stove to the ceiling	47.2" (1,200 mm)
Dimensions	20.1" W × 28.3" D × 41.3" H (510 × 720 × 1,050 mm)
Legs	Fixed; the Harvia 50 has no adjustable legs
Stones	Up to 264.6 lb (120 kg) of 4–6" (10–15 cm) stones; six 44 lb boxes of Harvia AC3020 fill it
Chimney connection	Top or rear, 5.5" (140 mm); chimney class T600 with a flue at least 4.3" (110 mm) across; rear opening centered 35.0" (890 mm) above the floor
Water tank	None
Firewood	Up to 24.0" (610 mm) long, 3.1–5.9" (8–15 cm) across
Materials	Black-painted steel; glass door
Electrical connection	None; wood-fired
Certification	CE marked (EN 15821)
Harvia part number	WK500 (GTIN 6417659001069)
Packed for shipping	428 lb (194.2 kg), Harvia data sheet; crate 31.5" W × 47.2" D × 48.8" H (800 × 1,200 × 1,240 mm)
Warranty	2-year manufacturer warranty; stones are not covered

Installation

How is the Harvia 50 installed?

The Harvia 50 stands, with no adjustable legs, on a floor strong enough to carry it, inside the safety distances below, and connects to a T600 chimney through its 5.5" (140 mm) opening. Harvia's manual says all local regulations apply, 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 installation manual, under Documents, gives the step-by-step installation, the chimney connection details and the wood loads.

Does the Harvia 50 need floor protection?

It depends on the floor under the Harvia 50. A bare concrete floor at least 2.4" (60 mm) thick needs no protection. On a floor made of combustible material, Harvia's manual calls for a concrete slab at least 2.4" (60 mm) thick that reaches 11.8" (300 mm) beyond the sides and back of the stove, unless it stands against a wall, and at least 15.7" (400 mm) in front, supported slightly above the floor to keep the floor dry. A tile floor needs Harvia protective bedding or similar heat-radiation protection, because the adhesives and waterproofing under tile do not resist the heat; Harvia's manual names no bedding model for the Harvia 50, and Topture does not offer one for it. Leave at least 10.8 sq ft (1 m²) of clear floor in front of the stove for the person tending it.

Harvia 50 safety distances

Keep at least these distances between the Harvia 50 and anything that can burn.

Harvia 50 minimum safety distances (Harvia manual Y05-0128)
Top of the stove to the ceiling	47.2" (1,200 mm)
Sides, rear and front to combustible walls and benches	19.7" (500 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
Clear floor in front of the stove	At least 10.8 sq ft (1 m²)

Harvia 50 behind a protective cover (Harvia manual Y05-0128)
Single cover: fibre-reinforced cement board at least 0.28" (7 mm) thick, or sheet metal at least 0.04" (1 mm) thick	Distance to combustibles halved to 9.8" (250 mm)
Double cover: two such boards	Distance to combustibles cut to a quarter, 4.9" (125 mm)
Air gap behind the cover	At least 1.2" (30 mm)
Cover height	At least 23.6" (600 mm) above the top of the stove

Harvia drawing of the Harvia 50 safety distances to masonry and combustible walls and the ceiling, in millimeters

Harvia drawing of the Harvia 50 distances behind single and double protective covers, in millimeters

Connecting the Harvia 50 to a chimney

The Harvia 50 connects at the top or the rear through a 5.5" (140 mm) opening, to a chimney of temperature class T600 with a flue at least 4.3" (110 mm) across; the center of the rear opening is 35.0" (890 mm) above the floor. Harvia's manual describes connecting it to a masonry flue, through the rear opening or, with an angled smoke pipe, the top opening, using the flue connection pipe supplied with the stove. Harvia's WHP1500 chimney kit, WZ115155 pipe adapter and WP220ST water heater are made for 115 mm openings, and Harvia names no transition to the Harvia 50's 140 mm opening, so Topture does not offer a chimney or water heater for the Harvia 50; have a chimney professional plan the flue.

Does the Harvia 50 need a first firing?

Yes. Harvia's manual says to fire the Harvia 50 once before its first sauna, outdoors or in a well-ventilated room, until the paint stops smoking; one load of wood is enough. Load the stones only after the stove has cooled, and throw no water on it during this firing.

What's Included

What's in the box with the Harvia 50?

Harvia 50 wood-burning sauna stove with its glass door
Flue connection pipe
Installation and user manual

What you need separately

Six 44 lb boxes (264 lb) of Harvia AC3020 4–6" stones
A T600 chimney with a flue at least 4.3" (110 mm) across, connected to the 5.5" (140 mm) opening; Harvia's manual describes a masonry flue. Topture does not sell a chimney for the Harvia 50
Floor protection: on a combustible floor, the concrete slab Harvia's manual describes; on tile, heat-radiation protection

Documents

Harvia 50 Installation and User Manual

Bathing Brands Harvia Stone Requirements Chart

Warranty

Harvia Warranty

Read the full LIMITED WARRANTY TERMS AND CONDITIONS

Step 1

Size it right

Every heater page lists the exact room size it's rated for, so you can match it to your sauna before you order.

Step 2

Spec your chimney

Through-roof or through-wall, single-wall or insulated, we help you build the right kit for your install.

Step 3

Real löyly

Wood-fired stones make the most authentic löyly — pour water across them and the steam hits the way Finns intended.

The Topture Experience

More than just a heater

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

BONUS 1

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.

INCLUDED

BONUS 2

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.

INCLUDED

Choose your options now

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

Choosing the right sauna

Compare models from multiple sauna manufacturers based on your space, climate, capacity, preferences, and budget.

Will they help you compare alternatives, or only answer questions about the product you've already selected?

Heater & electrical fit

Get help matching the heater to the sauna volume, glass area, controls, and electrical requirements.Try our heater calculator

Ask who will check that the heater and controls are right for your installation before you order.

Authorized products

Products are sourced through authorized channels and include the applicable manufacturer warranty.View independent listings

Verify that the retailer is authorized for the brand and that your manufacturer warranty will be valid.

Freight delivery

We help coordinate heavy-freight delivery and provide guidance on receiving and inspecting your shipment.

Ask how the order ships, how it will be unloaded, and what happens if freight arrives damaged.

Installation information

We help provide the manuals, specifications, clearances, and electrical information your installer may need.

Find out what documentation and project support will be available after checkout.

After the sale

Questions after delivery? We help with troubleshooting, documentation, warranty coordination, and manufacturer support.Read customer reviews

Ask who you will actually contact if something doesn't work after the order arrives.

463 Customer Reviews

Product and store reviews from Topture customers, collected by Judge.me.

Lifetime Expert Support

Same team before and after the sale, from sizing to warranty support.

Authorized Harvia Retailer

Sold by Topture, with the applicable manufacturer warranty.

Full-Value Freight Protection

Freight damage? We help coordinate the claim and replacement process.

STILL UNSURE?

Frequently Asked Questions

What comes with the Harvia 50, and what else does it need?

The Harvia 50 ships as the wood-burning stove with its glass door and flue connection pipe, with Harvia's installation and user manual. It needs no electricity, but it does need 4–6 in sauna stones (six 44 lb boxes of Harvia AC3020 fill its 264.6 lb stone space), a T600 chimney with a flue at least 4.3 in across connected to its 5.5 in (140 mm) opening, and floor protection on a tile or combustible floor. Topture sells the AC3020 stones separately. Harvia's steel chimney kit and water heater are made for 115 mm openings and Harvia names no transition to the Harvia 50's 140 mm one, so Topture does not offer a chimney, water heater or bedding for it.

What size sauna does the 40 kW Harvia 50 heat?

The Harvia 50 is rated at 40 kW and heats sauna rooms of 706–1,766 cu ft (20–50 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: a 10 m³ room with a glass door needs the output of a 12 m³ room. Multiply a solid-log sauna's volume by 1.5. The top of the stove needs at least 47.2 in (1,200 mm) to the ceiling. Smaller rooms suit the Harvia Pro 36, rated for 494–1,271 cu ft.

What chimney does the Harvia 50 need?

The Harvia 50 needs a chimney of temperature class T600 with a flue at least 4.3 in (110 mm) across, connected at the top or the rear through a 5.5 in (140 mm) opening; the rear opening's center is 35.0 in above the floor. Harvia's manual describes connecting it to a masonry flue with the flue connection pipe supplied with the stove, using an angled smoke pipe for the top opening. Harvia's WHP1500 steel chimney kit and WZ115155 adapter are made for the 115 mm opening of its other stoves, and Harvia names no transition to 140 mm, so Topture does not offer a chimney for the Harvia 50; a chimney professional should plan the flue to local code.

How is the Harvia 50 installed, and does it need electricity or floor protection?

The Harvia 50 stands on the floor, with no adjustable legs, and needs no electrical connection. A bare concrete floor at least 2.4 in (60 mm) thick needs no protection; on a combustible floor Harvia's manual calls for a concrete slab at least 2.4 in thick reaching 11.8 in beyond the sides and back and 15.7 in in front, and tile needs heat-radiation protection. Keep 47.2 in to the ceiling and 19.7 in to combustible walls and benches on every side, and 10.8 sq ft of clear floor in front. Harvia's manual says local regulations apply and the local fire authorities can advise.

What has to be done before the first fire in a Harvia 50?

The Harvia 50 must be fired once before its first sauna, outdoors or in a well-ventilated room, Harvia's manual says, because the protective paint smokes while it cures; one load of wood is enough. Load no stones until the stove has cooled completely afterwards, and throw no water on it during this firing. Remove leftover paint with a wire brush and a vacuum cleaner once it is cold.

What firewood does the Harvia 50 burn, and how hot should the sauna get?

The Harvia 50 takes firewood up to 24.0 in (610 mm) long and 3.1–5.9 in (8–15 cm) across. Start with pieces of 3.1–4.7 in (8–12 cm) and refuel with 4.7–5.9 in (12–15 cm). Empty the ash box before each firing and keep the door closed while the fire burns. The Harvia 50 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 50?

The Harvia 50 holds up to 264.6 lb (120 kg) of 4–6 in (10–15 cm) stones; six 44 lb boxes of Harvia AC3020 split-face olivine diabase stones fill it. Load them only after the 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 Harvia 50 owners run into, and how are they avoided?

Most problems Harvia's manual lists for the Harvia 50 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, blocked smoke canals or a connection pipe pushed too far into the flue. 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, and wooden walls darkening over time is normal.

Who makes the Harvia 50, and what is it made of?

The Harvia 50 (WK500) is made by Harvia, the Finnish sauna manufacturer; Harvia US Inc. is its warrantor in North America. It has a black-painted steel body and a glass door, and it is CE marked to EN 15821, the European standard for wood-fired sauna stoves. It measures 20.1 in wide, 28.3 in deep and 41.3 in high, with no adjustable legs, and Harvia's data sheet gives a shipping weight of 428 lb (194.2 kg).

What warranty does the Harvia 50 have?

Harvia's manufacturer warranty covers the Harvia 50 for 2 years of family use. The extra registration year Harvia offers applies to electric heaters only, not to wood-burning stoves, and sauna stones are not covered; the warranty also excludes damage caused by stones Harvia does not recommend. In commercial use, Harvia's terms cover wood-burning stoves for 6 months. 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 50 compare with the Harvia Pro 36?

The Harvia 50 is the larger stove: 40 kW for rooms of 706–1,766 cu ft, against the Pro 36's 31 kW for 494–1,271 cu ft. It holds 264.6 lb of stones, twice the Pro 36's 132 lb, and takes firewood up to 24 in long rather than 15.4 in. It connects through a 5.5 in (140 mm) opening instead of 4.5 in (115 mm): Harvia's WHP1500 steel chimney kit is made for the Pro 36's opening, while Harvia's manual connects the Harvia 50 to a masonry flue. Both need 19.7 in to combustible walls.

Where can you buy the Harvia 50 from an authorized dealer?

Topture is an authorized Harvia retailer and sells the Harvia 50 on its own, with six boxes of AC3020 stones 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 a Harvia 50 cost in total, delivered?

The delivered cost of a Harvia 50 from Topture is the stove price plus the parts it needs: six boxes of AC3020 stones, a T600 flue for its 5.5 in (140 mm) opening, planned and installed by a chimney professional, and floor protection on a tile or combustible floor. Topture has free shipping on orders over $200 within the continental US, so a Harvia 50 order ships free there; Harvia stoves travel on a pallet by freight, with Topture's full-value freight protection. Compare delivered totals, because some listings price the stove without its 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 wood burning sauna heater, done the right way.

40 kW for rooms of 706–1,766 cu ft
Up to 264.6 lb of 4–6" stones: six 44 lb boxes
Top or rear 5.5" (140 mm) chimney connection

The Sauna Mastery Protocol Digital Guide

Full-Value Freight Protection

Secure checkout
30-day return window*
2-year manufacturer warranty

*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.

Harvia 50 (Pro 50) 40kW Wood Burning Sauna Stove | WK500