Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
Dimensions6152 in
Converts4.5″ Euro to 6″ USA
Includes

What Is Included

All configurations

Included with purchase

Pipe adapter.

Contents vary by configuration. Check the row for the option selected above.

How It Fits

How This Product Fits the System

What it is used for

A transition fitting between the stated stove outlet and chimney diameter. It does not replace the remaining listed chimney, clearance, sealing, and support components.

What to plan

  • Start with the heater, chimney, or control model, not the brand alone, then confirm the accessory part number and configuration.
  • Optional accessories are not required unless the selected product or installation manual says otherwise.
  • Replacement and installation parts must follow the current system manual, clearances, and local code.

Products that use this item

This item is used by the following products.

Attachments
Gallery

Harvia WZ115155 Wood Stove Pipe Adapter 4.5″ Euro to 6″ USA

All Harvia wood-burning sauna stoves are equipped with standard European exhaust piping that measures at 4.6 in (4.5″). This adapter is required for North American 6.2 in (6″) piping conversion.

Build Your Quote:

$105.00

US shipping: $22.95. This item ships free when you add it to a sauna or heater order, or when your order is $200 or more. Sauna and heater customers get free shipping on accessories for life; we’ll recognize your email at checkout.

Share your selected options and add-ons. Prices and availability are confirmed when the link is opened.

Pay over time:

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Pay with HSA/FSA:

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What Harvia owners say

Public reviews and notes owners sent our team, word for word. Names are shortened to a first name and last initial, or to initials.

“i just want to tell you that we are beyond thrilled with our new sauna stove. What a difference from our old “woodstove” Your customer service has been exceptional and I am just really grateful.”

Kameron L. · Harvia M3 owner

“The heater fits wonderfully in there and it looks fantastic. That Harvia Cilindro 9kW is incredible.”

Millie K. · Harvia Cilindro owner

“Perfect to protect the seats in our sauna..”

M. S. · Harvia Paraffin Oil owner

“Very happy with the M3. First off Ben did a great job answering all of my questions and walking me thru the best stove selection for my build. Shipping was fast and painless. The stove takes 30 minutes to heat up and doesn’t use as much wood as I imagined. I also purchased the heat shield for clearance and with the help of a friend install was quick and easy. I wouldn’t hesitate to work with Ben from sauna market place again. Cheers!”

Tyler W. · Harvia M3 owner

“Excellent customer service”

Garrett W. · SaunaLife Ergo barrel sauna owner

“Fast delivery, great customer service, and wonderful product. Highly recommend to anyone who is thinking about it! You won't regret it!”

James S.

“I couldn't be happier with the service at SaunaMarketplace, Ben was incredibly thorough with his service and expertise and guided me through every step of the purchase process.”

T. H.
  • Stainless steel material
  • Graphite-black powder paint
  • Dimensions: 6″D x 6 1/2″H
Model WZ115155
Weight 5 lbs
Diameter 6″
Height 6 1/4″

Designing a Harvia Chimney System

Every part on this page belongs to Harvia’s modular WHP steel chimney system: a 4.6 in (4.5″) smoke path inside a 8.7 in (8.6″) insulated casing, assembled with slot-and-lock joints. Here is how a complete system comes together:

  1. Start with the chimney. For pitched roofs, the WHP1500 kit (59.1 in chimney plus rain cap, tilted rain flange, smoke pipe, and ceiling lead-through set) is the core of the system. For flat roofs and barrel saunas, the WHP1000500 package bundles the chimney with the symmetric roof kit.
  2. Connect the stove. Bridge the stove collar to the insulated chimney with 4.6 in WZ smoke pipes (7.9 in, 19.7 in, or 3.3 ft). Add the WZ115030SP damper plate at the stove to control draft while firing, a WZ115120 reducer where pipe sections step down, or the WZ115155 adapter if you are transitioning to 6″ US Class A pipe.
  3. Reach your height. Add WHP500 (19.7 in) or WHP1000 (39.4 in) extensions. Stay within Harvia’s limits: 16.4 ft total chimney height, no more than 6.5 ft above the last support, lateral supports every 9.8 ft.
  4. Go through the roof. Choose the roof kit that matches your roofline: WHP-AS for tilted/pitched roofs, WHP-ASSYM for flat roofs and barrels. Replacement rain collars: WHM22 (tilted) and WHM24 (symmetric). Add a snow barrier above the chimney where sliding snow can load the flashing.
  5. Seal and control. The WHM25 vapor barrier restores the vapor-tight layer where the chimney passes the sauna ceiling; the WHP270 insulated damper closes the flue after the fire is fully out so the sauna holds its heat.
  6. Finish the stove side. Stone-filled covers (WL300 for Legend stoves, WL300PC for Cilindro) absorb radiant heat from the smoke pipe and significantly reduce its required safety distances.

Key clearances and rules: vertical installation only; 4 in (4″) from the insulated casing to combustibles; 19.7 in (stainless) or 14.8 in (black) from non-insulated smoke pipe unless shielded; designed for wood-burning stoves in standalone outdoor sauna buildings. Confirm your plan with your local building authority, and if you would like help speccing the system, talk to us; we design these daily.

Shop the Complete Harvia Chimney System

1. Start with the chimney

2. Connect the stove

3. Reach your height

4. Go through the roof

5. Seal and control

6. Finish the stove side

Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
Dimensions6152 in
Converts4.5″ Euro to 6″ USA
Includes

What Is Included

All configurations

Included with purchase

Pipe adapter.

Contents vary by configuration. Check the row for the option selected above.

How It Fits

How This Product Fits the System

What it is used for

A transition fitting between the stated stove outlet and chimney diameter. It does not replace the remaining listed chimney, clearance, sealing, and support components.

What to plan

  • Start with the heater, chimney, or control model, not the brand alone, then confirm the accessory part number and configuration.
  • Optional accessories are not required unless the selected product or installation manual says otherwise.
  • Replacement and installation parts must follow the current system manual, clearances, and local code.

Products that use this item

This item is used by the following products.

Attachments
Gallery