Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are 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 assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Includes

What Is Included

Includes the product and configuration selected above. Hardware, controls, stones, venting, and accessories are not included unless specifically listed.

See How It Fits for required and compatible products.

Technical Specifications

Model & Application

Model & Application
Brand	Narvi
Catalog Product	Narvi 50 Wood‑Burning Sauna Stove – 50 kW Finnish Heater
Heater Type	Wood-burning sauna stove
Model	Narvi 50

Sauna Sizing

Sauna Sizing
Sauna Room Volume	1,589 to 2,472 ft³

Fuel & Venting

Fuel & Venting
Fuel	Wood
Flue Outlet Diameter	5.7 in
Maximum Firewood Length	25 in

Dimensions & Weight

Dimensions & Weight
Heater Dimensions	26.4 in W × 33.5 in D × 43.3 in H
Product Weight	606 lb

Stone Capacity & Performance

Stone Capacity & Performance
Stone Capacity	220 lb; 4 to 6 in stones

Installation Clearances

Installation Clearances
Side Clearance	20 in
Front Clearance	40 in
Rear Clearance	20 in
Clearance Above	50 in

Materials & Finish

Materials & Finish
Casing	Black painted steel

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.

What to plan

Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
Follow the current installation manual and use a qualified installer.

No separate sellable companion product is asserted for this listing. Match any installation parts from the exact model manual rather than from brand alone.

Attachments

Manual

View PDF Download

Narvi Warranty

View PDF Download

Gallery

Click Image, Then Scroll! For the best experience, click on any image then swipe or use arrow keys to browse.

Narvi 50 Wood‑Burning Sauna Stove – 50 kW Finnish Heater

Name: Narvi 50 Wood Sauna Stove | 50 kW Finnish Heater for Large Saunas – Free US Shipping
Price: 8995.00 USD
Availability: InStock

Hand‑built on Finland’s west coast by Narvi -still the only major heater brand that designs and fabricates every component on Finnish soil, **the Narvi 50 is the most powerful wood‑burning sauna stove you can buy in North America. It’s nearly 5/8 inch‑thick steel firebox surrounds a 220‑pound stone bed, effortlessly filling up to 2,500 ft³ with rolling clouds of löyly that last for hours. Rated at ≈ 171,000 BTU/h, the 606‑pound chassis embodies Narvi’s 80‑year “zero‑compromise” philosophy on steam quality and longevity. A panoramic glass door, reversible hinge, top‑or‑rear 6‑inch flue outlet, and serviceable cast‑iron grate all speak to the same engineer‑for‑decades mindset. Backed by a 2‑year factory warranty and free U.S. freight from Sauna Marketplace, the Narvi 50 delivers life-changing Finnish heat to lodges, spas, and serious private builds alike.

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$8,995.00

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Narvi

50 kW output heats 1,589–2,472 ft³ rooms
Holds 220 lb of 4–6″ stones for long‑lasting steam
606 lb stove mass, 3/8 to 5/8 in steel walls for decades of service
Oversize glass door & cool‑touch wooden handle
Made and safety‑listed in Finland (CE, EN 15821)
2‑year Narvi warranty
Free continental US freight delivery
US-Based Tech Support

Why Narvi 50 Stands Alone

Largest Capacity in the USA – No other UL‑listed or CE‑listed wood stove sold stateside pushes a full 50 kW. That headroom lets you heat big commercial saunas without running the stove at its limit, extending lifespan and giving bathers consistent, soft steam.

Finnish Craft, American Support – Narvi has forged sauna heaters since 1937 and runs its own foundry for absolute control over alloys and welds. Sauna Marketplace backs every Narvi 50 with US‑based technical help, spare‑part stocking, and hands‑on freight coordination to get your heater delivered smoothly.

Stone‑Driven Löyly – With 220 pounds of dolerite, heat is stored inside the rock mass instead of blasting the room with flame. A single splash of water delivers a luxurious cloud that lingers.

Built for Abuse – 10‑0.6 in thick furnace plate (triple the industry norm) resists warping; replaceable grates and adjustable hinges keep the stove field‑serviceable for decades.

Flexible Installation – Rear or top 5.7" flue, tunnel‑through‑the‑wall option, and field‑swappable fire‑door swing simplify new builds and retrofits.

Ideal For

Commercial spas & wellness resorts
Hunting/fishing lodges and short‑term rentals serving 8‑20 guests
Large private saunas built from logs, masonry, or high‑glass designs where extra kW offsets heat loss
Off‑grid properties wanting maximum heat per firebox load

Spec	U.S. Measure
Recommended Room Volume	1,589 – 2,472 ft³
Nominal Output	50 kW (≈ 171,000 BTU/h)
Stone Capacity	220 lb of 4 – 6 in igneous stones
Stove Weight (empty / with stones)	606 lb / 826 lb
Firewood Length (max)	13 in (fits standard 12–14 in logs)
Typical Firewood Use	~ 19 lb hardwood for a 2‑hr session
Flue Diameter	5.7 in (fits any 6 in Class‑A chimney)
Draft Requirement	0.05 in H₂O (≈ 12 Pa) minimum
Overall Dimensions (W × D × H)	26.4 in × 33.5 in × 43.3 in
Clearances to Combustibles*	Front 40 in • Sides 20 in • Back 20 in • Ceiling 49 in
Efficiency / CO @ 13 % O₂	70 % / 0.30 %
Compliance	CE & EN 15821‑2010 (meets U.S. code via Class‑A chimney)

*Clearances may be cut in half with an approved heat shield.

Operating Costs & Firewood Tips

Expect ~ 19 lb of split, <20 %‑moisture hardwood for a typical two‑hour service. Load 8 lb to start; add 5 lb once the first bed embers. Maintain heat with 1–2 logs every 30 minutes thereafter. Keep draft calm; roaring flames waste energy and overheat the flue.

Installation & Safety

Floor Load: 1,000 lb+ with stones; verify joist capacity or pour a slab.
Ventilation: Provide at least one 4" fresh‑air inlet within 12" of the stove.
Heat Shields: Stainless or fiber‑cement, 1" standoff, if framing is combustible.
Chimney: Class A insulated rated 1,112 °F. Double‑wall black adaptor recommended in‑room.
Inspection: Have a certified professional check draft and clearances before first firing.

Shipping & Lead Time

Narvi 50 ships free to the lower 48 on a lift‑gate pallet. Average lead time: 5–7 business days in‑stock or 4–6 weeks direct from Finland during peak season. You’ll receive tracking plus a call to schedule delivery.

Warranty & Support

Narvi Oy’s 2‑year parts warranty covers manufacturing defects; stones and gaskets are consumables. Sauna Marketplace serves as your US‑based liaison for troubleshooting, replacement parts, and wear‑item reorders.

Compare Narvi 50 vs. Narvi 30

	Narvi 30	Narvi 50
Output	24 kW	50 kW
Room Size	706–1,236 ft³	1,589–2,472 ft³
Stone Capacity	143 lb	220 lb
Stove Mass	331 lb	606 lb
Footprint (W × D)	21 × 26 "	26 × 34 "
Best For	Family Sauna	Lodges, commercial spas

If your room volume is under 1,250 ft³, the Narvi 30 gives identical build quality with a smaller footprint and fuel bill.

Ready to Transform Your Large Sauna?

Click Add to Cart or call Sauna Marketplace for a quick sizing check with a US sauna specialist. Bring authentic Finnish heat to every corner of your big room—reliably, quietly, beautifully—with the Narvi 50.