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Welcome To Peak Flow Fitness | Chat With An Expert By Texting Or Calling 646-921-5221

Finnish Saunas

Not sure where to start? Read our Which Sauna Should I Get? before you buy.

Authentic Finnish-style traditional saunas — wood-burning and electric heater systems built to deliver the real Finnish löyly experience: high heat, controlled humidity, premium wood construction.

We're an authorized dealer for Finnish Sauna Builders — the premier US source for traditional Finnish saunas, including indoor cabin systems, outdoor barrel and cabin saunas, and complete sauna heater packages from Harvia (electric and wood-burning).

Choose by installation type:

  • Indoor cabin saunas — built-to-fit interior installations (basements, dedicated wellness rooms)
  • Outdoor barrel saunas — fully assembled or kit-built, weather-resistant Western Red Cedar
  • Outdoor cabin saunas — larger group capacity (4–8 person), full traditional Finnish experience
  • Replacement heaters — Harvia electric (3.5–9 kW) or wood-burning (Cilindro, M-series)

What makes Finnish saunas different:

  • Heat profile — 180°F to 200°F+ (hotter than infrared) with löyly steam from water on heated rocks
  • Wood selection — Western Red Cedar (most common), Nordic Spruce (traditional Finnish), Hemlock (entry-tier)
  • Heater requirements — electric heaters need dedicated 240V circuit; wood-burning needs proper venting
  • Construction — solid kiln-dried wood, mortise-and-tenon joinery, no MDF or veneer

Free shipping on orders over $999, exclusions apply (saunas ship freight — most include curbside delivery; white-glove and installation services available on select models).

Planning a sauna installation? Email support@peakflowfitness.com with your space (indoor vs outdoor, capacity, electrical availability) and we'll spec the right setup.

Need seating for your sauna? See Thera360 personal sauna seating.

Filters

Finnish Sauna Builders Tampere Finnish Barrel Sauna with WiFi Heater - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Tampere Barrel Sauna - Traditional with WiFi Heater
$12,931.00 - $12,931.00
$12,931.00
$12,931.00 - $12,931.00
$12,931.00

Tampere Finnish Barrel Sauna with WiFi Heater - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Tampere Finnish Barrel Sauna with WiFi Heater Recovery is not optional if you train hard. The Tampere by Finnish Sauna Builders is a traditional F...

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$12,931.00 - $12,931.00
$12,931.00
$12,931.00 - $12,931.00
$12,931.00
Finnish Sauna Builders Vassa Finnish Barrel Sauna with WiFi Heater - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Vassa Barrel Sauna - Traditional with WiFi Heater
$14,819.00 - $14,819.00
$14,819.00
$14,819.00 - $14,819.00
$14,819.00

Vassa Finnish Barrel Sauna with WiFi Heater - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Vassa Finnish Barrel Sauna with WiFi Heater Your training demands consistency. Your recovery should too. The Vassa by Finnish Sauna Builders is a ...

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$14,819.00 - $14,819.00
$14,819.00
$14,819.00 - $14,819.00
$14,819.00
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 7' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 7' x 8' - Finnish Sauna Builders — exterior view
$7,477.10 - $12,815.60
$7,477.10 - $12,815.60
$7,477.10 - $12,815.60
$7,477.10

Custom Indoor Sauna Room - 4' x 7' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 4' x 7' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 4' x 7' x 8', hand-crafted by Finn...

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$7,477.10 - $12,815.60
$7,477.10 - $12,815.60
$7,477.10 - $12,815.60
$7,477.10
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 8' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 8' x 8' - Finnish Sauna Builders — exterior view
$8,053.70 - $13,676.70
$8,053.70 - $13,676.70
$8,053.70 - $13,676.70
$8,053.70

Custom Indoor Sauna Room - 4' x 8' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 4' x 8' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 4' x 8' x 8', hand-crafted by Finn...

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$8,053.70 - $13,676.70
$8,053.70 - $13,676.70
$8,053.70 - $13,676.70
$8,053.70
Finnish Sauna Builders Custom Indoor Sauna Room - 3' x 4' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 3' x 4' x 8' - Finnish Sauna Builders — exterior view
$5,190.50 - $9,817.20
$5,190.50 - $9,817.20
$5,190.50 - $9,817.20
$5,190.50

Custom Indoor Sauna Room - 3' x 4' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 3' x 4' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 3' x 4' x 8', hand-crafted by Finn...

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$5,190.50 - $9,817.20
$5,190.50 - $9,817.20
$5,190.50 - $9,817.20
$5,190.50
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 6' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 6' x 8' - Finnish Sauna Builders — exterior view
$8,312.00 - $13,581.40
$8,312.00 - $13,581.40
$8,312.00 - $13,581.40
$8,312.00

Custom Indoor Sauna Room - 6' x 6' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 6' x 6' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 6' x 6' x 8', hand-crafted by Finn...

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$8,312.00 - $13,581.40
$8,312.00 - $13,581.40
$8,312.00 - $13,581.40
$8,312.00
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 10' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 10' x 8' - Finnish Sauna Builders — exterior view
$12,279.80 - $20,213.20
$12,279.80 - $20,213.20
$12,279.80 - $20,213.20
$12,279.80

Custom Indoor Sauna Room - 7' x 10' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 7' x 10' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 7' x 10' x 8', hand-crafted by Fi...

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$12,279.80 - $20,213.20
$12,279.80 - $20,213.20
$12,279.80 - $20,213.20
$12,279.80
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 9' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 9' x 8' - Finnish Sauna Builders — exterior view
$11,540.00 - $19,338.50
$11,540.00 - $19,338.50
$11,540.00 - $19,338.50
$11,540.00

Custom Indoor Sauna Room - 7' x 9' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 7' x 9' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 7' x 9' x 8', hand-crafted by Finn...

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$11,540.00 - $19,338.50
$11,540.00 - $19,338.50
$11,540.00 - $19,338.50
$11,540.00
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 8' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 8' x 8' - Finnish Sauna Builders — exterior view
$10,800.20 - $27,669.80
$10,800.20 - $27,669.80
$10,800.20 - $27,669.80
$10,800.20

Custom Indoor Sauna Room - 7' x 8' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 7' x 8' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 7' x 8' x 8', hand-crafted by Finn...

View full details
$10,800.20 - $27,669.80
$10,800.20 - $27,669.80
$10,800.20 - $27,669.80
$10,800.20
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 7' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 7' x 7' x 8' - Finnish Sauna Builders — exterior view
$10,060.30 - $15,807.70
$10,060.30 - $15,807.70
$10,060.30 - $15,807.70
$10,060.30

Custom Indoor Sauna Room - 7' x 7' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 7' x 7' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 7' x 7' x 8', hand-crafted by Finn...

View full details
$10,060.30 - $15,807.70
$10,060.30 - $15,807.70
$10,060.30 - $15,807.70
$10,060.30
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 4' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 4' x 4' x 8' - Finnish Sauna Builders — exterior view
$5,747.40 - $10,573.00
$5,747.40 - $10,573.00
$5,747.40 - $10,573.00
$5,747.40

Custom Indoor Sauna Room - 4' x 4' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 4' x 4' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 4' x 4' x 8', hand-crafted by Finn...

View full details
$5,747.40 - $10,573.00
$5,747.40 - $10,573.00
$5,747.40 - $10,573.00
$5,747.40
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 10' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 10' x 8' - Finnish Sauna Builders — exterior view
$11,357.00 - $28,341.30
$11,357.00 - $28,341.30
$11,357.00 - $28,341.30
$11,357.00

Custom Indoor Sauna Room - 6' x 10' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 6' x 10' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 6' x 10' x 8', hand-crafted by Fi...

View full details
$11,357.00 - $28,341.30
$11,357.00 - $28,341.30
$11,357.00 - $28,341.30
$11,357.00
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 9' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 9' x 8' - Finnish Sauna Builders — exterior view
$10,691.30 - $27,548.40
$10,691.30 - $27,548.40
$10,691.30 - $27,548.40
$10,691.30

Custom Indoor Sauna Room - 6' x 9' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 6' x 9' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 6' x 9' x 8', hand-crafted by Finn...

View full details
$10,691.30 - $27,548.40
$10,691.30 - $27,548.40
$10,691.30 - $27,548.40
$10,691.30
Finnish Sauna Builders Custom Indoor Sauna Room - 8' x 8' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 8' x 8' x 8' - Finnish Sauna Builders — exterior view
$11,853.50 - $19,662.20
$11,853.50 - $19,662.20
$11,853.50 - $19,662.20
$11,853.50

Custom Indoor Sauna Room - 8' x 8' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 8' x 8' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 8' x 8' x 8', hand-crafted by Finn...

View full details
$11,853.50 - $19,662.20
$11,853.50 - $19,662.20
$11,853.50 - $19,662.20
$11,853.50
Finnish Sauna Builders Custom Indoor Sauna Room - 8' x 9' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 8' x 9' x 8' - Finnish Sauna Builders — exterior view
$12,647.80 - $20,597.70
$12,647.80 - $20,597.70
$12,647.80 - $20,597.70
$12,647.80

Custom Indoor Sauna Room - 8' x 9' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 8' x 9' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 8' x 9' x 8', hand-crafted by Finn...

View full details
$12,647.80 - $20,597.70
$12,647.80 - $20,597.70
$12,647.80 - $20,597.70
$12,647.80
Finnish Sauna Builders Harvia Legend Protective Wall Sheath - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Legend Protective Wall Sheath - Finnish Sauna Builders — exterior view
Sold out
$399.00 - $399.00
$399.00
$399.00 - $399.00
$399.00

Harvia Legend Protective Wall Sheath - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Legend Protective Wall Sheath The Harvia WL200 protective sheath is designed for use with all wood-heated Legend stoves. Perfectly compatibl...

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$399.00 - $399.00
$399.00
$399.00 - $399.00
$399.00
Sold out
Finnish Sauna Builders Harvia Protective Bedding WL110 (floor) For Harvia 20 Ls/rs Pro36 & Duo36 - Finnish... — exterior view
Sold out
$509.00 - $509.00
$509.00
$509.00 - $509.00
$509.00

Harvia Protective Bedding WL110 (floor) For Harvia 20 Ls/rs Pro36 & Duo36 - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Protective Bedding WL110 (floor) For Harvia 20 Ls/rs Pro36 & Duo36 The Harvia WL110 is made of aluminum-zinc-coated steel sheet which is...

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$509.00 - $509.00
$509.00
$509.00 - $509.00
$509.00
Sold out
Finnish Sauna Builders Harvia Masonry Connector WZ011115 Stainless Steel - Finnish Sauna Builders — exterior view
Sold out
$85.00 - $85.00
$85.00
$85.00 - $85.00
$85.00

Harvia Masonry Connector WZ011115 Stainless Steel - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Masonry Connector WZ011115 Stainless Steel The Harvia WZ011115 masonry connector is made of stainless steel. Why buy your Harvia Masonry Co...

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$85.00 - $85.00
$85.00
$85.00 - $85.00
$85.00
Sold out
Finnish Sauna Builders Harvia Water Heater WP250TH For Harvia Thermio - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Water Heater WP250TH For Harvia Thermio - Finnish Sauna Builders — exterior view
Sold out
$702.00 - $702.00
$702.00
$702.00 - $702.00
$702.00

Harvia Water Heater WP250TH For Harvia Thermio - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Water Heater WP250TH For Harvia Thermio The stylish steel outer shell of the Thermio water heater suits any sauna. The Thermio water heater ...

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$702.00 - $702.00
$702.00
$702.00 - $702.00
$702.00
Sold out
Finnish Sauna Builders Harvia Vapour Barrier WHM25 225-250 Mm - Finnish Sauna Builders — exterior view
Sold out
$300.00 - $300.00
$300.00
$300.00 - $300.00
$300.00

Harvia Vapour Barrier WHM25 225-250 Mm - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Vapour Barrier WHM25 225-250 Mm The Harvia vapor barrier prevents water vapor from entering the building structure. Why buy your Harvia Vap...

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$300.00 - $300.00
$300.00
$300.00 - $300.00
$300.00
Sold out
Finnish Sauna Builders Harvia Extension For Chimney WHP1000M Mm Black - Finnish Sauna Builders — exterior view
Sold out
$633.00 - $633.00
$633.00
$633.00 - $633.00
$633.00

Harvia Extension For Chimney WHP1000M Mm Black - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Extension For Chimney WHP1000M Mm Black The Harvia WHP1000M steel chimney extension made of black powder-coated steel enables you to easily ...

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$633.00 - $633.00
$633.00
$633.00 - $633.00
$633.00
Sold out
Finnish Sauna Builders Custom Indoor Sauna Room - 5' x 6' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 5' x 6' x 8' - Finnish Sauna Builders — exterior view
$7,566.20 - $12,792.70
$7,566.20 - $12,792.70
$7,566.20 - $12,792.70
$7,566.20

Custom Indoor Sauna Room - 5' x 6' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 5' x 6' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 5' x 6' x 8', hand-crafted by Finn...

View full details
$7,566.20 - $12,792.70
$7,566.20 - $12,792.70
$7,566.20 - $12,792.70
$7,566.20
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 7' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 6' x 7' x 8' - Finnish Sauna Builders — exterior view
$9,197.40 - $14,595.40
$9,197.40 - $14,595.40
$9,197.40 - $14,595.40
$9,197.40

Custom Indoor Sauna Room - 6' x 7' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 6' x 7' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 6' x 7' x 8', hand-crafted by Finn...

View full details
$9,197.40 - $14,595.40
$9,197.40 - $14,595.40
$9,197.40 - $14,595.40
$9,197.40
Finnish Sauna Builders Custom Indoor Sauna Room - 5' x 5' x 8' - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Custom Indoor Sauna Room - 5' x 5' x 8' - Finnish Sauna Builders — exterior view
$6,935.20 - $12,078.50
$6,935.20 - $12,078.50
$6,935.20 - $12,078.50
$6,935.20

Custom Indoor Sauna Room - 5' x 5' x 8' - Finnish Sauna Builders

Finnish Sauna Builders
In stock

Custom Indoor Sauna Room - 5' x 5' x 8' - Finnish Sauna Builders — This custom-built Finnish sauna room measures 5' x 5' x 8', hand-crafted by Finn...

View full details
$6,935.20 - $12,078.50
$6,935.20 - $12,078.50
$6,935.20 - $12,078.50
$6,935.20