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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 Harvia Virta 6KW Ultimate Sauna Heater with WiFi Digital Control, Sauna Ston... — interior bench layout
Finnish Sauna Builders Harvia Virta 6KW Ultimate Sauna Heater with WiFi Digital Control, Sauna Stones and H... — exterior view Sold out
$3,812.00 - $3,812.00
$3,812.00
$3,812.00 - $3,812.00
$3,812.00

Harvia Virta 6KW Ultimate Sauna Heater with WiFi Digital Control, Sauna Stones and Heater Guard - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Virta 6KW Ultimate Sauna Heater with WiFi Digital Control, Sauna Stones and Heater Guard The Harvia Virta HL60 is a 6kW floor-standing elect...

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$3,812.00 - $3,812.00
$3,812.00
$3,812.00 - $3,812.00
$3,812.00
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Finnish Sauna Builders Harvia Sauna Heater Cleanser 500ml - Finnish Sauna Builders — exterior view Sold out
$49.50 - $49.50
$49.50
$49.50 - $49.50
$49.50

Harvia Sauna Heater Cleanser 500ml - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Sauna Heater Cleanser 500ml Sauna heater cleanser, suitable for heaters with a stainless steel surface. Instructions for use: For cleaning a...

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$49.50 - $49.50
$49.50
$49.50 - $49.50
$49.50
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Harvia Virta Pro HL160 16kW heater side profile with stainless steel finish
Harvia Virta Pro HL160 16kW commercial sauna heater front view Sold out
$3,736.00 - $3,736.00
$3,736.00
$3,736.00 - $3,736.00
$3,736.00

Harvia Virta Pro HL160 16kW Commercial Sauna Heater

Finnish Sauna Builders
Out of stock

The Harvia Virta Pro HL160 is a 16 kW Finnish-built electric sauna heater designed for commercial spa owners, gym operators, and homeowners with la...

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$3,736.00 - $3,736.00
$3,736.00
$3,736.00 - $3,736.00
$3,736.00
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Finnish Sauna Builders Harvia Power Extension Unit LTY45 - Finnish Sauna Builders — exterior view Sold out
$583.00 - $583.00
$583.00
$583.00 - $583.00
$583.00

Harvia Power Extension Unit LTY45 - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Power Extension Unit LTY45 The Harvia Power Extension Unit LTY45 is a specialized control component designed to enhance the capabilities of ...

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$583.00 - $583.00
$583.00
$583.00 - $583.00
$583.00
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Finnish Sauna Builders Harvia Club KG12G-U3W 12KW Sauna Heater - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Club KG12G-U3W 12KW Sauna Heater - Finnish Sauna Builders — exterior view
Sold out
$2,086.00 - $2,086.00
$2,086.00
$2,086.00 - $2,086.00
$2,086.00

Harvia Club KG12G-U3W 12KW Sauna Heater - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Club KG12G-U3W 12KW Sauna Heater  The Harvia K125G-U3-NC Club Series 12.5kW Electric Sauna Heater is a high-performance commercial sauna hea...

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$2,086.00 - $2,086.00
$2,086.00
$2,086.00 - $2,086.00
$2,086.00
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Finnish Sauna Builders Harvia Pro 26 WKPR26M Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Pro 26 WKPR26M Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,006.00 - $2,006.00
$2,006.00
$2,006.00 - $2,006.00
$2,006.00

Harvia Pro 26 WKPR26M Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia 26 Pro – Wood-Burning Sauna Stove The Harvia 26 Pro is a powerful, high-capacity wood-burning sauna stove designed for medium to large sauna...

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$2,006.00 - $2,006.00
$2,006.00
$2,006.00 - $2,006.00
$2,006.00
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Finnish Sauna Builders Harvia Pro 20 Es Pro Wood Burning Sauna Stove With Water Tank - Finnish Saun... — interior bench layout
Finnish Sauna Builders Harvia Pro 20 Es Pro Wood Burning Sauna Stove With Water Tank - Finnish Sauna Builders — exterior view
Sold out
$2,153.00 - $2,153.00
$2,153.00
$2,153.00 - $2,153.00
$2,153.00

Harvia Pro 20 Es Pro Wood Burning Sauna Stove With Water Tank - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Pro 20 Es Pro Wood Burning Sauna Stove With Water Tank The Harvia 20 ES Pro stove is a popular choice for cottage saunas ‒ thanks to its pra...

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$2,153.00 - $2,153.00
$2,153.00
$2,153.00 - $2,153.00
$2,153.00
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Finnish Sauna Builders Harvia Vega Compact 3500 3.5KW Sauna Heater with Built-in Control - Finnish... — interior bench layout
Finnish Sauna Builders Harvia Vega Compact 3500 3.5KW Sauna Heater with Built-in Control - Finnish Sauna Bu... — exterior view
Sold out
$860.00 - $860.00
$860.00
$860.00 - $860.00
$860.00

Harvia Vega Compact 3500 3.5KW Sauna Heater with Built-in Control - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Vega Compact 3500 3.5KW Sauna Heater with Built-in Control The Harvia Vega Compact 3500 is a space-efficient, wall-mounted 3.5kW electric sa...

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$860.00 - $860.00
$860.00
$860.00 - $860.00
$860.00
Sold out
Finnish Sauna Builders Harvia Spirit SP90E 9KW Sauna Heater - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Spirit SP90E 9KW Sauna Heater - Finnish Sauna Builders — exterior view
Sold out
$1,930.00 - $1,930.00
$1,930.00
$1,930.00 - $1,930.00
$1,930.00

Harvia Spirit SP90E 9KW Sauna Heater - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Spirit SP90E 9KW Sauna Heater Experience elevated relaxation with the Harvia Spirit electric sauna heater, a powerful fusion of Finnish craf...

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$1,930.00 - $1,930.00
$1,930.00
$1,930.00 - $1,930.00
$1,930.00
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Finnish Sauna Builders Harvia M3 SL WKM3SL Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia M3 SL WKM3SL Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$1,416.00 - $1,416.00
$1,416.00
$1,416.00 - $1,416.00
$1,416.00

Harvia M3 SL WKM3SL Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia M3 SL Wood Burning Sauna Stove – Through-the-Wall Heating Experience the warmth and tradition of a wood-fired sauna with the Harvia M3 SL wo...

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$1,416.00 - $1,416.00
$1,416.00
$1,416.00 - $1,416.00
$1,416.00
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Finnish Sauna Builders Harvia Linear 16 WK160C Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Linear 16 WK160C Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$933.00 - $933.00
$933.00
$933.00 - $933.00
$933.00

Harvia Linear 16 WK160C Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Linear 16 WK160C Wood Burning Sauna Stove The Harvia Linear 16 stove has a straightforward design and a sturdy structure. The wood-heated st...

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$933.00 - $933.00
$933.00
$933.00 - $933.00
$933.00
Sold out
Finnish Sauna Builders Harvia M3 WKM3 Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia M3 WKM3 Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$941.00 - $941.00
$941.00
$941.00 - $941.00
$941.00

Harvia M3 WKM3 Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia M3 Wood Burning Sauna Stove – Traditional Finnish Heater Bring the timeless tradition of a Finnish sauna into your home with the Harvia M3 W...

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$941.00 - $941.00
$941.00
$941.00 - $941.00
$941.00
Sold out
Finnish Sauna Builders Harvia Pro 20 Ls Wood Burning Sauna Stove With Water Tank - Finnish Sauna Bu... — interior bench layout
Finnish Sauna Builders Harvia Pro 20 Ls Wood Burning Sauna Stove With Water Tank - Finnish Sauna Builders — exterior view
Sold out
$2,153.00 - $2,153.00
$2,153.00
$2,153.00 - $2,153.00
$2,153.00

Harvia Pro 20 Ls Wood Burning Sauna Stove With Water Tank - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Pro 20 Ls Wood Burning Sauna Stove With Water Tank The Harvia 20 LS Pro stove is a popular choice for cottage saunas thanks to its practical...

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$2,153.00 - $2,153.00
$2,153.00
$2,153.00 - $2,153.00
$2,153.00
Sold out
Finnish Sauna Builders Harvia Club KG15G-U3W 15KW Sauna Heater - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Club KG15G-U3W 15KW Sauna Heater - Finnish Sauna Builders — exterior view
Sold out
$2,286.00 - $2,286.00
$2,286.00
$2,286.00 - $2,286.00
$2,286.00

Harvia Club KG15G-U3W 15KW Sauna Heater - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Club KG15G-U3W 15KW Sauna Heater The Harvia K15G-U3-NC Club Series 15kW Electric Sauna Heater is a top-tier commercial sauna heater engineer...

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$2,286.00 - $2,286.00
$2,286.00
$2,286.00 - $2,286.00
$2,286.00
Sold out
Harvia Virta HL90 stainless steel sauna heater front view
Harvia Virta HL90 9kW electric sauna heater for large home saunas
Sold out
$2,080.00 - $2,080.00
$2,080.00
$2,080.00 - $2,080.00
$2,080.00

Harvia Virta HL90 9kW Electric Sauna Heater

Finnish Sauna Builders
Out of stock

The Harvia Virta HL90 is a 9 kW Finnish-built electric sauna heater designed for homeowners with 3-5 person saunas who want faster heat-up time who...

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$2,080.00 - $2,080.00
$2,080.00
$2,080.00 - $2,080.00
$2,080.00
Sold out
Finnish Sauna Builders Harvia Pro 36 Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Pro 36 Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,295.00 - $2,295.00
$2,295.00
$2,295.00 - $2,295.00
$2,295.00

Harvia Pro 36 Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Pro 36 Wood Burning Sauna Stove The Harvia 36 stove is a powerhouse stove for large saunas. The generous amount of stones guarantees a prop...

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$2,295.00 - $2,295.00
$2,295.00
$2,295.00 - $2,295.00
$2,295.00
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Finnish Sauna Builders Harvia M3 Protective Sheath (side) - Finnish Sauna Builders — exterior view
Sold out
$216.00 - $216.00
$216.00
$216.00 - $216.00
$216.00

Harvia M3 Protective Sheath (side) - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia M3 Protective Sheath (side) The Harvia WL400 protective sheath is designed and approved for wood-heated Harvia stoves (Harvia M1, M2, M3 and...

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$216.00 - $216.00
$216.00
$216.00 - $216.00
$216.00
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Finnish Sauna Builders Harvia Pro 20 WKPR20M Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Pro 20 WKPR20M Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$1,513.00 - $1,513.00
$1,513.00
$1,513.00 - $1,513.00
$1,513.00

Harvia Pro 20 WKPR20M Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Pro 20 Wood Burning Sauna Stove The Harvia PRO 20 is a powerful wood-burning sauna stove engineered for medium-sized sauna rooms ranging fro...

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$1,513.00 - $1,513.00
$1,513.00
$1,513.00 - $1,513.00
$1,513.00
Sold out
Finnish Sauna Builders Harvia KIP45B Stainless Steel 4.5KW Sauna Heater with built-in control - Fin... — interior bench layout
Finnish Sauna Builders Harvia KIP45B Stainless Steel 4.5KW Sauna Heater with built-in control - Finnish Sau... — exterior view
Sold out
$1,121.00 - $1,121.00
$1,121.00
$1,121.00 - $1,121.00
$1,121.00

Harvia KIP45B Stainless Steel 4.5KW Sauna Heater with built-in control - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Description Enjoy traditional Finnish sauna comfort with the Harvia KIP45B Electric Sauna Heater, an efficient, wall-mounted heating solution craft...

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$1,121.00 - $1,121.00
$1,121.00
$1,121.00 - $1,121.00
$1,121.00
Sold out
Finnish Sauna Builders Harvia Cilindro PC90 9KW Sauna Heater with built in controls - Finnish Sauna... — interior bench layout
Finnish Sauna Builders Harvia Cilindro PC90 9KW Sauna Heater with built in controls - Finnish Sauna Builders — exterior view
Sold out
$1,578.00 - $1,578.00
$1,578.00
$1,578.00 - $1,578.00
$1,578.00

Harvia Cilindro PC90 9KW Sauna Heater with built in controls - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Cilindro PC90 9KW Sauna Heater with built in controls The Harvia Cilindro PC90 is a high-performance 9kW electric sauna heater that brings e...

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$1,578.00 - $1,578.00
$1,578.00
$1,578.00 - $1,578.00
$1,578.00
Sold out
Finnish Sauna Builders Harvia 20 Duo Wood Burning Sauna Stove - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia 20 Duo Wood Burning Sauna Stove - Finnish Sauna Builders — exterior view
Sold out
$2,788.00 - $2,788.00
$2,788.00
$2,788.00 - $2,788.00
$2,788.00

Harvia 20 Duo Wood Burning Sauna Stove - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia 20 Duo Wood Burning Sauna Stove  Harvia Duo is a combination of a wood-burning sauna stove and fireplace. Heat your sauna to bathing temper...

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$2,788.00 - $2,788.00
$2,788.00
$2,788.00 - $2,788.00
$2,788.00
Sold out
Finnish Sauna Builders Harvia KIP60B Stainless Steel 6KW Sauna Heater with built-in control - Finni... — interior bench layout
Finnish Sauna Builders Harvia KIP60B Stainless Steel 6KW Sauna Heater with built-in control - Finnish Sauna... — exterior view
Sold out
$1,195.00 - $1,216.00
$1,195.00 - $1,216.00
$1,195.00 - $1,216.00
$1,195.00

Harvia KIP60B Stainless Steel 6KW Sauna Heater with built-in control - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Description Experience powerful, precision-controlled sauna heating with the Harvia KIP60B Electric Sauna Heater. Ideal for medium to large-sized s...

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$1,195.00 - $1,216.00
$1,195.00 - $1,216.00
$1,195.00 - $1,216.00
$1,195.00
Sold out
Finnish Sauna Builders Harvia Cilindro Led Safety Railing For 6 & 8kw Sauna Heaters - Finnish Sauna... — interior bench layout
Finnish Sauna Builders Harvia Cilindro Led Safety Railing For 6 & 8kw Sauna Heaters - Finnish Sauna Builders — exterior view
Sold out
$557.00 - $557.00
$557.00
$557.00 - $557.00
$557.00

Harvia Cilindro Led Safety Railing For 6 & 8kw Sauna Heaters - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Cilindro Led Safety Railing For 6 & 8kw Sauna Heaters The Harvia HPC3L safety railing with lights is a good way to increase bathing safe...

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$557.00 - $557.00
$557.00
$557.00 - $557.00
$557.00
Sold out
Finnish Sauna Builders Harvia Wall Sauna Heater 8KW with Built-In Controls - Finnish Sauna Builders — interior bench layout
Finnish Sauna Builders Harvia Wall Sauna Heater 8KW with Built-In Controls - Finnish Sauna Builders — exterior view
Sold out
$1,512.00 - $1,619.00
$1,512.00 - $1,619.00
$1,512.00 - $1,619.00
$1,512.00

Harvia Wall Sauna Heater 8KW with Built-In Controls - Finnish Sauna Builders

Finnish Sauna Builders
Out of stock

Harvia Wall Sauna Heater 8KW with Built-In Controls The Harvia Wall 8kW 240V Electric Sauna Heater with built-in controls is an ideal choice for me...

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$1,512.00 - $1,619.00
$1,512.00 - $1,619.00
$1,512.00 - $1,619.00
$1,512.00
Sold out