
Experience the authentic charm of a traditional sauna with the 15kW Wood Burning Sauna Heater (Round Model). Designed for medium-sized sauna rooms (8–18 m³), it delivers soft, enveloping heat and the soothing ambiance of crackling firewood. Crafted with a durable cast iron firebox and stainless steel convection panels, this heater ensures efficient heat distribution and longevity. The included stainless steel flue kit facilitates safe and straightforward installation, making it an ideal choice for off-grid cabins, backyard saunas, and remote retreats.
FEATURES

High Heat Output – 15kW
With a robust 15kW power output, this wood-burning heater is ideal for sauna rooms sized between 8 to 18 cubic meters. It quickly raises temperatures, delivering consistent warmth throughout your sauna session.
Generous Stone Capacity – 30–35 kg
The heater accommodates up to 35 kilograms of sauna stones, ensuring excellent heat retention and extended steam generation. This allows for a soothing, long-lasting sauna experience with minimal reloading.
Reversible Door Swing
Designed for flexible installation, the heater’s loading door can be adjusted to swing open from either side. This feature is especially useful for tight spaces or customized sauna layouts.
Efficient Ash Management
Equipped with a front-panel ash pan, this heater simplifies the cleaning process. Easily removable, it allows for quick disposal of ash without the need to disassemble the heater.
Optional Rear Flue Outlet
For added versatility, the heater can be configured with a rear flue outlet (available separately). This customization offers more options when integrating the unit into unique sauna designs or limited-space environments.

Instructions for Using Your Harvia Sauna Heater

Piling of the Sauna Stones
Properly arranging sauna heater stones is essential for both safety and warranty compliance. Follow these guidelines:
Use suitable sauna stone materials such as peridotite, olivine diabase, olivine, and vulcanite.
- Only use cleavage surfaces and/or rounded stones on your sauna heater.
- If heating elements come into contact with the stones, use rounded stones only in the outer layers of the stone space.
- Decorative stones should be placed loosely to allow air circulation and should not touch heating elements.
- Stones should be 5–15 cm in diameter.
- Wash off dust from the stones before piling them into the heater.
- When placing the stones, don’t drop stones into the heater.
- Don’t wedge stones between heating elements.
- Space stones to ensure proper air circulation.
- Pile stones to support each other rather than placing the weight on heating elements.
- Avoid forming a high pile of stones on top of the heater.
- Don’t place any objects or devices inside or near the heater that could alter airflow.
Heater Maintenance
Sauna stones can disintegrate due to temperature fluctuations. Rearrange stones at least annually, or more often with frequent sauna use.
Remove any disintegrated stones from the heater’s bottom and replace them with new ones to maintain optimal heating and prevent overheating.
Heating Your Sauna with Harvia Sauna Heater
When using the heater for the first time, both the heater and stones may emit odors. Efficiently ventilate the sauna room to remove these odors. If the heater’s output matches the sauna room’s size, it will take about an hour for a properly insulated sauna to reach the desired bathing temperature. The sauna stones typically reach this temperature simultaneously with the sauna room.
SPECIFICATIONS
Specification | Details |
---|---|
Power Output | 15 kW |
Recommended Room Volume | 8–18 m³ |
Stone Capacity | 30–35 kg |
Flue Pipe Diameter | 115 mm |
Max Firewood Length | 340 mm |
Heater Dimensions (H x W x D) | 730 mm x 410 mm x 470 mm |
Weight | 80 kg |
Firebox Material | Cast Iron (3 mm) |
External Panels Material | Stainless Steel (1 mm) |
Safety Distances (with panels) | 250 mm (sides/back), 500 mm (front) |
WHAT’S INCLUDED
15kW Wood Burning Sauna Heater (Round Model)
Full Stainless Steel Flue Kit
Removable Ash Pan
User Manual
Note: Sauna stones are not included and should be purchased separately.
Experience Modern Luxury with Harvia Sauna Heater
The Harvia Vega Sauna Heater is your passport to a world of modern luxury and relaxation. Its elegant design, effortless operation, and ease of installation make it the perfect choice for those seeking the ultimate sauna experience.
Ready to transform your wellness experience? Explore the world of saunas and other spa products at Shym Saunas, dive in today!
