2 Year Warranty Included

Harvia M3 SL Wood Sauna Stove

by Harvia Sauna Heaters

SKU WKM3SL

Top Authorized Dealer 2 Year Warranty Included

Harvia M3 SL Wood Sauna Stove

by Harvia Sauna Heaters

SKU WKM3SL

VIP Freight Insurance + Clinical Protocols Guide ($698 Value Included)

Save $283.00

$1,699.00

$1,699.00 - $1,699.00

$1,699.00

$1,416.00

$1,416.00 - $1,416.00

$1,416.00

Perfect for sauna rooms from 212 - 459 ft³

Free Shipping to the contiguous US

In stock — estimated delivery:

Quantity

Excellent

454+ 5-Star
Reviews
Full Manufacturer's Warranty
Fastest Delivery Guaranteed
Top Authorized Retailer

Stone Capacity 66 lbs

Max Log Length 13.7"

Exterior Dimensions 15.3"W × 25.0"D × 28.0"H

454+ Verified Homeowner Reviews

Don’t take our word for it. Read honest feedback from real customers who have installed and used these exact units.

Comprehensive Factory Warranty

Your investment is 100% protected. We facilitate direct manufacturer coverage on wood, heaters, and controls. No loopholes.

Certified Harvia Sauna Heater Partner

Guaranteed authentic inventory. Buying from unverified sources voids your warranty. Buy direct from the experts.

Secure Freight Scheduling

Heavy units require specialized care. We inspect, palletize, and coordinate secure carrier pickup within 7 business days to ensure damage-free arrival.

Learn more about the

Harvia M3 SL Wood Sauna Stove

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

The Topture™ Standard

1. Engineering-Grade Expertise (Not Just Salespeople) Unlike standard retailers, our team includes a mechanical engineer with 20 years of experience and technicians with 55+ years in the field. We don’t just sell boxes; we understand the electrical, spatial, and mechanical requirements of your home. You get clinical-level advice, not a sales pitch.

2. Authorized Retailer & Full Warranty We are a fully authorized partner for every brand we carry. This guarantees you receive authentic, factory-fresh equipment with a valid manufacturer's warranty. Zero grey-market risks. Zero voided warranties.

3. 100% Insured Priority Shipping We treat your order with urgency. We utilize strategic US-based warehouses for 24-48 hour dispatch on most items. Crucially, every shipment is 100% insured. If your item arrives with even a scratch, we handle the claim and replacement immediately at no cost to you.

4. No Sales Tax & Best Price Guarantee The price you see is the price you pay. We charge No Sales Tax (except where required by law) and no hidden handling fees. Find a lower price at another authorized dealer? We will match it instantly.

5. Nationwide Installer Network Need more than just delivery? We maintain a directory of independent professionals across the country. We can provide you with access to our list of recommended installers to help get your wellness space up and running without the headache.

6. Lifetime Technical Support Your relationship with us doesn't end at checkout. You get lifetime access to our US-based support team for installation guidance, troubleshooting, and usage protocols.

Included Free With Your Purchase

Harvia M3 SL Wood Sauna Stove

$1,699.00

BONUS 1

Zero - Risk Shipping Protection - Topture

Full-Value Freight Insurance + Priority Processing

Every order ships fully insured from warehouse to your door. If anything arrives damaged, we manage the entire claim on your behalf — no paperwork, no chasing carriers. This coverage is included at no extra cost.

$299

FREE

BONUS 2

The Sauna Mastery Protocol — Digital Guide

Get the exact session times, temperatures, and weekly schedules behind the health benefits. Covers deep sleep, recovery, stress reduction, and how to build a sustainable sauna routine from day one. Sent to your inbox after purchase.

$49

FREE

Retail Price: $1,699.00

Your price today: $1,416.00

You Save: $283.00

Both bonuses are automatically included with your order.

⚠ 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.

THEM


Customer Support	Lifetime Expert Support & Installation Guidance	Unresponsive chat
Shipping & Handling	Fully Insured, Specialized Heavy-Freight Handling	Cheap delivery (Damage risk)
Availability & Speed	Priority Dispatch: Ships from US Warehouses	Non-priority lead times
Product Authenticity	Authorized Retailer for Top-Tier Brands	Limited selection, lower-quality
Instalment Payments	Flexible Monthly Installment Plans	Full payment upfront only

J.

Verified Customer

United States, CA

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.

Anonymous

Verified Customer

United States, MI

Ordered this sauna fall 2024 and we love it. Took about 2 weekends to get it put together myself but it went pretty well. We chose pine over cedar to save some money and still don't mind that we did so. I'm biased but always recommend getting a wood burning stove whenever possible. We regularly reach 200+ degrees in ours. No better feeling during a Minnesota winter. I installed a metal roof this fall for the looks and to potentially avoid wood rotting on the roof. The original roof should be fine with the ice & water shield it comes with but I wanted to upgrade it anyway. 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..

Christopher B.

Verified Customer

United States, CA

Ordered Huum Wifi Controler. Shipped within a few days from Chicago to California. Great price and reliable. Benny was helpful. Will buy from them again.

Read Their Stories

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.

Need help picking the right wood fired heater size? Calculate Perfect Heater Size

Harvia M3 SL Wood Sauna Stove

Harvia M3 SL Wood Sauna Stove