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Harvia M3 SL Wood Sauna Stove - Topture

Harvia M3 SL Wood Sauna Stove

A 16.5kW Harvia M3 SL wood-burning stove with exterior feed — stoke the fire from outside the wall, smoke-free sauna inside.

$1,416
$1,416 - $1,416
$1,416
$1,699
Save $283
$1,699 - $1,699
$1,699
+ Free Shipping Free Delivery within the Continental US
  • No electricity needed: runs entirely on firewood.
  • 66 lb stone load means generous, sustained steam output.
  • Exterior feed keeps the firebox outside the sauna wall, smoke-free inside.
Includes $348 in free bonuses
The Sauna Mastery Protocol Digital Guide
The Sauna Mastery Protocol Digital Guide
$49 FREE
Full-Value Freight Insurance
Full-Value Freight Insurance
$299 FREE

Perfect for sauna rooms from 212 - 459 ft3

Select Stones

Required for Operation

Select Chimney Kit

Required for Operation

Select Accessories

Harvia M3 SL Wood Sauna Stove $1,416
Subtotal $1,416
Free shipping (contiguous US)
  • Secure checkout
  • 30-day guarantee
  • 2 Year warranty
  • Amazon
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  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa
In stock — estimated delivery:
Excellent Trustpilot

See What People Are Saying…

“This has completely transformed my workspace. The natural light is a game changer!”

Lisa R.
Verified owner

“Built it in a weekend with my brother. Glass front is the move — feels like a real room, not a closet.”

Mark T.
Verified owner

“I love the design and how easy it was to set up. Highly recommend for any home owner.”

James K.
Verified owner
Description

Harvia M3 SL Series 16.5kW Wood-Burning Sauna Stove with Exterior Feed

The Harvia M3 SL is the perfect solution for sauna enthusiasts who want the rustic charm of a wood-burning heater with the added convenience of an external feed. Designed to heat your sauna from an adjacent room or the outdoors, the M3 SL allows you to enjoy a clean, uninterrupted sauna experience while still tending the fire with ease.

The heater itself is installed inside the sauna, while the firewood is loaded through a fire chamber door located on the other side of the wall. This dual-room design lets one person enjoy the sauna’s soothing heat, while another can relax outside by the soft glow of the cast-iron-framed glass door—doubling as a cozy fireplace.

Key Features

  • For sauna rooms: 212 to 459 cubic feet
  • Dual-room heating: Sauna heater + exterior fireplace
  • Power: 16.5 kW
  • Stone capacity: 66 lbs (stones sold separately)
  • Elegant design: Cast-iron-framed glass door
  • Flexible installation: Floor-mount with adjustable feet
  • Versatile connection options: Top or rear stove pipe outlets
  • Removable ash box for easy cleanup
  • Built in Finland: Quality you can trust
  • Warranty: 2-year limited manufacturer’s warranty
Specifications
  • Kilowatt Rating: 16.5 kW
  • Room Size: 212 – 459 cu. ft.
  • Minimum Room Height: 75.4" (1915 mm)
  • Maximum Firewood Length: 13.7" (350 mm)
  • Heater Weight: 99 lbs
  • Shipping Weight (w/ stones): 187 lbs
  • Dimensions:
    • Width: 15.3" (390 mm)
    • Depth: 25" (640 mm)
    • Height: 28" (715 mm)

Safety Distances

Harvia M3 SL Safety distances

Harvia M3 SL Safety distances with protective sheaths

What’s Included?
  • Harvia M3 SL Wood-Burning Sauna Stove
  • Installation & Operation Manual
  • 2-Year Manufacturer Warranty

➕ Optional Add-Ons:

  • (2) Boxes of Harvia Sauna Stones (66 lbs total)
  • Harvia Pipe Adaptor (4.5" Euro to 6" US)
  • Protective Bedding – Safeguards combustible flooring
  • Protective Sheath Panel – Minimizes required clearance
  • Chimney Kits – Complete venting solution for safe exhaust
Documents

User Manual

Data Sheet

Harvia Sauna Stones Update

Warranty

Harvia Warranty

Read the full LIMITED WARRANTY TERMS AND CONDITIONS

Your Own Sauna Ritual, in 3 Simple Steps

You don't need a sales pitch, a spec sheet to decode, or six months of forum research.

Size it right
Step 1

Size it right

Every heater page lists the exact room size it's rated for, so you can match it to your sauna before you order.

Spec your chimney
Step 2

Spec your chimney

Through-roof or through-wall, single-wall or insulated, we help you build the right kit for your install.

Real löyly
Step 3

Real löyly

Wood-fired stones make the most authentic löyly — pour water across them and the steam hits the way Finns intended.

WHAT COMES WITH EVERY TOPTURE ORDER

Claim $348 in Free Bonuses Today

The Sauna Mastery Protocol
BONUS 1

The Sauna Mastery Protocol

The session times, temperatures, and weekly rhythm that turn a sauna into a habit you keep. Covers heat-up protocols, deep sleep, recovery stacking, and what to expect across the first 30 sessions. Sent to your inbox after purchase.

$49

INCLUDED

Full-Value Freight Insurance + Priority Processing
BONUS 2

Full-Value Freight Insurance + Priority Processing

Every CL4G ships fully insured from our US warehouse to your driveway. If anything arrives damaged, we handle the entire claim — no paperwork, no chasing the carrier. Orders dispatch in 2–6 business days if in stock, not 3–4 weeks.

$299

INCLUDED

Retail Price: $1,699

Today's price: $1,416

Choose Your Options Now
Excellent Trustpilot rating 4.4 out of 5 stars Trustpilot
⚠ California Proposition 65 Warning: This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

REAL HOMES. REAL REVIEWS.

See What Sauna Owners Are Saying…

Rated 5/5 based on 122 happy owners

We thought about buying a sauna for years and finally did. We absolutely love it, especially in the winter. It’s incredibly easy to assemble with two people the whole family uses it.

Verified owner

Ordered this sauna fall 2024 and we love it. No better feeling during a Minnesota winter. Lastly, I have to mention the customer service for this purchase has been like no other. Any questions or requests I had were addressed immediately by Topture. I got more than I expected from them and have already recommended them to several people looking for saunas. SO if you're thinking about it, JUST DO IT already..

Verified owner

Thanks for the great service - greatly appreciated.

Verified owner

TOPTURE vs. OTHER DEALERS

Same look. Very different ownership experience.

Other dealers

Customer support
Direct line to sauna experts, before and after the sale
Generic chat, slow email
Freight & handling
Full-value insurance included, specialized heavy-freight carriers
Cheap delivery, damage risk on you
Dispatch speed
Priority processing — ships in 2–6 business days from US warehouses
Non-priority lead times, weeks of "processing"
Brand authorization
Authorized SaunaLife dealer — warranty honored, claims processed by us
Often gray market or limited brand access
Payment options
Shop Pay 0% APR — from $241.95/mo
Full payment upfront only
Post-sale
Heater sizing, install support, warranty handling, troubleshooting
Order confirmation and silence

Authorized SaunaLife retailer · warranty honored · US-based support.

Choose Your Options Now
Excellent Trustpilot rating Trustpilot
454+ Verified Reviews

Real homeowners, rated 4.9/5 on Trustpilot.

Lifetime Expert Support

Same team before and after the sale, heater sizing, install help, warranty handling.

Authorized Harvia Sauna Heater Dealer

Factory-direct inventory, full lifetime warranty honored.

Full Freight Insurance Included

$0 risk if anything arrives damaged. We handle the claim.

Real customer reviews

What sauna owners are saying

STILL UNSURE?

Frequently Asked Questions

General

Where are you located, and where do you ship from?

We are a U.S.-operated company with our main headquarters in Sheridan, Wyoming.

Orders are shipped across the continental U.S. from our network of warehouses, managed by our logistics partners in California, Illinois, Texas, New York, Florida, and Toronto.

How much is shipping?

We’re proud to offer FREE SHIPPING on all orders over $200 within the Continental United States.

The only exception is sauna stones—due to their weight and high shipping costs, we apply a shipping charge when they are purchased without a heater.

Do you provide financing?

Absolutely! To view your financing offer, simply select Shop Pay Installments as your payment method at Step 3 of checkout.

You'll need to enter a debit card to receive your offer, but don’t worry—you can still back out before completing the purchase.

How long will it take for my items to arrive?

If you order today, you can expect delivery within 5-13 business days. In-stock products typically ship within 2-6 business days, and once they leave the warehouse, transit time is usually 3-7 business days, depending on your location. Let us know if you need more details!

For pre-order or made-to-order items, the estimated delivery time frame is listed on the product page.

What happens after I place my order?

As soon as you place your order, you'll receive a confirmation email with your order details—be sure to keep it for your records. Once we process your order, we'll begin preparing it for shipment. As soon as it ships, you'll receive another email with tracking information.

1-2 days before delivery, the delivery team will call you to schedule an appointment. You’ll need to be home to accept and sign for the delivery at the scheduled time.

Is there a warranty?

Yes, all products come with a manufacturer warranty. You can find the specific warranty details for each product under the "Warranty" tab on its product page.

Do you have a showroom?

We don’t have a showroom, which means we can bring you the lowest prices as we don’t need to worry about any extra costs!

Where do you deliver to?

We offer free Curbside Delivery to all 48 lower states and for some products even Canada.

Do you ship internationally?

International Shipping

Yes, we offer international shipping for many of our products. Customers outside the US can request a personalized shipping quote by contacting us. Please be aware that any applicable taxes or customs fees will be the responsibility of the customer. Note that some items may be subject to shipping restrictions.

Shipping to Hawaii, Alaska, and Puerto Rico

We ship to Hawaii, Alaska, and Puerto Rico, although most items are subject to additional shipping fees. To obtain specific rates and prevent any restocking fees, please email us at contact@topture.com.

Harvia M3 SL Wood Sauna Stove - Topture
Excellent on Trustpilot

Your wood burning sauna heater, done the right way.

  • No electricity needed: runs entirely on firewood.
  • 66 lb stone load means generous, sustained steam output.
  • Exterior feed keeps the firebox outside the sauna wall, smoke-free inside.
Includes $348 in free bonuses
The Sauna Mastery Protocol Digital Guide
The Sauna Mastery Protocol Digital Guide
$49 FREE
Full-Value Freight Insurance
Full-Value Freight Insurance
$299 FREE
  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa
  • Secure checkout
  • 30-day guarantee
  • 2 Year warranty
Description

Harvia M3 SL Series 16.5kW Wood-Burning Sauna Stove with Exterior Feed

The Harvia M3 SL is the perfect solution for sauna enthusiasts who want the rustic charm of a wood-burning heater with the added convenience of an external feed. Designed to heat your sauna from an adjacent room or the outdoors, the M3 SL allows you to enjoy a clean, uninterrupted sauna experience while still tending the fire with ease.

The heater itself is installed inside the sauna, while the firewood is loaded through a fire chamber door located on the other side of the wall. This dual-room design lets one person enjoy the sauna’s soothing heat, while another can relax outside by the soft glow of the cast-iron-framed glass door—doubling as a cozy fireplace.

Key Features

  • For sauna rooms: 212 to 459 cubic feet
  • Dual-room heating: Sauna heater + exterior fireplace
  • Power: 16.5 kW
  • Stone capacity: 66 lbs (stones sold separately)
  • Elegant design: Cast-iron-framed glass door
  • Flexible installation: Floor-mount with adjustable feet
  • Versatile connection options: Top or rear stove pipe outlets
  • Removable ash box for easy cleanup
  • Built in Finland: Quality you can trust
  • Warranty: 2-year limited manufacturer’s warranty
Specifications
  • Kilowatt Rating: 16.5 kW
  • Room Size: 212 – 459 cu. ft.
  • Minimum Room Height: 75.4" (1915 mm)
  • Maximum Firewood Length: 13.7" (350 mm)
  • Heater Weight: 99 lbs
  • Shipping Weight (w/ stones): 187 lbs
  • Dimensions:
    • Width: 15.3" (390 mm)
    • Depth: 25" (640 mm)
    • Height: 28" (715 mm)

Safety Distances

Harvia M3 SL Safety distances

Harvia M3 SL Safety distances with protective sheaths

What’s Included?
  • Harvia M3 SL Wood-Burning Sauna Stove
  • Installation & Operation Manual
  • 2-Year Manufacturer Warranty

➕ Optional Add-Ons:

  • (2) Boxes of Harvia Sauna Stones (66 lbs total)
  • Harvia Pipe Adaptor (4.5" Euro to 6" US)
  • Protective Bedding – Safeguards combustible flooring
  • Protective Sheath Panel – Minimizes required clearance
  • Chimney Kits – Complete venting solution for safe exhaust
Documents

User Manual

Data Sheet

Harvia Sauna Stones Update

Warranty

Harvia Warranty

Read the full LIMITED WARRANTY TERMS AND CONDITIONS