# Harvia M3 SL Wood-Burning Stove with External Firebox 16.5 kW

**URL:** https://aio.lv/en/product--harvia-wkm3sl--10700336
**Data updated:** 2026-07-26 04:19 (EEST)
**Category:** Fireplaces & Stoves
**Manufacturer:** Harvia
**Manufacturer code:** WKM3SL
**EAN:** 6417659001151
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 591.99 €
**Prices and availability valid until:** 2026-08-27 23:59
**Price without VAT (21%):** 489.25 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--harvia-wkm3sl--10700336

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Monday | free |
| Courier delivery to door | 06.08.2026 | 53.99 EUR |

## Summary description

The Harvia M3 SL is a high-efficiency wood-burning stove with a 16.5 kW heating capacity, designed specifically for small to medium-sized saunas. Featuring an external firebox, it allows you to conveniently heat the sauna from an adjacent room or outside. This stove provides traditional soft heat and efficient air circulation for an optimal sauna experience, combining durability with classic Nordic design.

## Long description

The Harvia M3 SL Wood-Burning Stove with External Firebox 16.5 kW is a high-efficiency heating solution designed specifically for small to medium-sized saunas. Featuring an external firebox, this stove allows you to conveniently heat your sauna from an adjacent room or from outside the sauna space, keeping the hot room clean and free of wood debris. Combining classic Nordic design with robust durability, it delivers traditional soft heat and efficient air circulation for an optimal and relaxing sauna experience.
Advantages
This wood-burning stove offers exceptional convenience thanks to its external firebox design, which separates the fueling area from the steam room. It provides traditional, soothing heat that warms the sauna evenly while ensuring efficient air circulation. Built with high-quality materials, the Harvia M3 SL guarantees long-lasting durability and reliable performance during regular use. Its compact structure makes it suitable for various sauna layouts while maintaining a stylish and classic aesthetic appearance.
Suitable for
Small to medium-sized traditional wood-heated saunas
Saunas where loading firewood from an adjacent room or outside is preferred
Creating a traditional soft heat sauna atmosphere
When it may not be suitable
This stove may not be suitable for very large saunas that exceed its heating capacity range, as it is engineered specifically for small and medium spaces. Additionally, it is not ideal for installations where an external firebox tunnel cannot be accommodated through the wall to an adjacent room or outdoor area.
Key specifications
Heating capacity: 16.5 kW
Fuel type: Wood
Design feature: External firebox
Application: Small to medium-sized saunas
How to use
To use the stove, load dry firewood into the external firebox located in the adjacent room or outside space and ignite it safely. Regulate the draft and airflow using the stove controls to maintain the desired burning rate and temperature. Once the fire is established, the stove will efficiently heat the sauna stones and circulate warm air throughout the steam room. Always ensure proper ventilation in the sauna room and allow the stove to cool down completely before performing routine cleaning or maintenance.
What to consider before purchase
Ensure the wall structure allows for the installation of the external firebox tunnel between the sauna and the adjacent room
Verify that the 16.5 kW heating capacity matches the volume of your sauna room
Check local building and fire safety regulations regarding wood-burning stove installations and chimney requirements
Make sure to use properly seasoned dry firewood and maintain adequate ventilation in the sauna room for safe and efficient operation of your wood-burning stove.

## FAQ

### How much does the Harvia M3 SL Wood-Burning Sauna Stove 16.5 kW cost, and is it available for purchase?

The price is 591.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Monday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Harvia M3 SL Wood-Burning Sauna Stove 16.5 kW be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Harvia products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Harvia service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10700336/59088625_large.webp