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

Finnish Saunas

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.

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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

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

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

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

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...

View full details
$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

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

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

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...

View full details
$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

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...

View full details
$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

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

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

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

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

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

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

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 150 SL Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Legend 150 SL Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,129.00 - $2,129.00
$2,129.00
$2,129.00 - $2,129.00
$2,129.00

Harvia Legend 150 SL Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Legend 150 SL Wood Burning Sauna Stove Experience the tradition and power of wood-fired sauna bathing with the Harvia Legend 150SL Wood Bur...

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$2,129.00 - $2,129.00
$2,129.00
$2,129.00 - $2,129.00
$2,129.00
Sold out
Finnish Sauna Builders Harvia Legend 150 Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Legend 150 Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,089.00 - $2,575.50
$2,089.00 - $2,575.50
$2,089.00 - $2,575.50
$2,089.00

Harvia Legend 150 Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Legend 150 Wood Burning Sauna Stove The Harvia Legend 150 Wood Burning Sauna Stove is a premium wood-fired heater designed to deliver an aut...

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$2,089.00 - $2,575.50
$2,089.00 - $2,575.50
$2,089.00 - $2,575.50
$2,089.00
Sold out
Finnish Sauna Builders Harvia Linear WL475 16 Protective Sheath (side & Rear) - Finnish Sauna Builders — exterior view
Sold out
$624.00 - $624.00
$624.00
$624.00 - $624.00
$624.00

Harvia Linear WL475 16 Protective Sheath (side & Rear) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Linear WL475 16 Protective Sheath (side & Rear) The Harvia WL475 protective sheath is designed and approved for wood-heated Harvia stove...

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$624.00 - $624.00
$624.00
$624.00 - $624.00
$624.00
Sold out
Finnish Sauna Builders Harvia WL650 20 Es Pro/s Protective Sheath (side & Rear) - Finnish Sauna Builders — exterior view
Sold out
$531.00 - $531.00
$531.00
$531.00 - $531.00
$531.00

Harvia WL650 20 Es Pro/s Protective Sheath (side & Rear) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia WL650 20 Es Pro/s Protective Sheath (side & Rear) The Harvia WL650 protective sheath is designed and approved for wood-heated Harvia woo...

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$531.00 - $531.00
$531.00
$531.00 - $531.00
$531.00
Sold out
Finnish Sauna Builders Harvia WL600 20 Es Pro/s Protective Sheath (side) - Finnish Sauna Builders — exterior view
Sold out
$234.00 - $234.00
$234.00
$234.00 - $234.00
$234.00

Harvia WL600 20 Es Pro/s Protective Sheath (side) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia WL600 20 Es Pro/s Protective Sheath (side) The Harvia WL600 protective sheath is designed and approved for wood-heated Harvia wood burning h...

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$234.00 - $234.00
$234.00
$234.00 - $234.00
$234.00
Sold out
Finnish Sauna Builders Harvia Legend 240 SL Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Legend 240 SL Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,502.00 - $2,502.00
$2,502.00
$2,502.00 - $2,502.00
$2,502.00

Harvia Legend 240 SL Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Legend 240 SL Wood Burning Sauna Stove The Harvia Legend 240 SL is a powerful wood-burning sauna stove that pays tribute to the rich Finnish...

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$2,502.00 - $2,502.00
$2,502.00
$2,502.00 - $2,502.00
$2,502.00
Sold out
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 WL500 /ls/rs/sl/duo/boiler/sl Boiler Protective Sheath (side) - Finnish Sauna... — exterior view
Sold out
$224.00 - $224.00
$224.00
$224.00 - $224.00
$224.00

Harvia WL500 /ls/rs/sl/duo/boiler/sl Boiler Protective Sheath (side) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia WL500 /ls/rs/sl/duo/boiler/sl Boiler Protective Sheath (side) The Harvia WL500 protective sheath is designed and approved for wood-heated Ha...

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$224.00 - $224.00
$224.00
$224.00 - $224.00
$224.00
Sold out
Finnish Sauna Builders Harvia Linear WL530 22 Es Protective Sheath (side) - Finnish Sauna Builders — exterior view
Sold out
$232.00 - $232.00
$232.00
$232.00 - $232.00
$232.00

Harvia Linear WL530 22 Es Protective Sheath (side) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Linear WL530 22 Es Protective Sheath (side) The Harvia WL530 protective sheath is designed and approved for wood-heated Harvia stoves (Harvi...

View full details
$232.00 - $232.00
$232.00
$232.00 - $232.00
$232.00
Sold out