A Controlled Burn
Renewed airflow and fire-chamber design help the wood burn in a more controlled and efficient manner.
GreenFlame brings Harvia’s evolving combustion technology into wood-burning sauna heaters designed to preserve the warmth, visible flame, and ritual of real fire while burning with lower emissions.
GreenFlame is not a description of the color of the fire. It is Harvia’s name for a renewed wood-burning fire-chamber approach developed around more controlled, efficient combustion. The intention is not to remove the character of a traditional sauna fire, but to refine what happens inside the heater so the same ritual can move toward cleaner wood burning.
The GreenFlame fire chamber manages the flow of air through the burning process more deliberately. This supports cleaner combustion while maintaining reliable heat production and the visible fire that gives a wood-burning sauna its living atmosphere.
Compared with Harvia’s earlier comparable fire-chamber design, GreenFlame is reported to produce approximately 20% fewer small-particle emissions and 70% lower carbon-monoxide emissions.
Renewed airflow and fire-chamber design help the wood burn in a more controlled and efficient manner.
The technology is designed to reduce carbon monoxide and small-particle emissions from wood combustion.
GreenFlame models pair the combustion technology with generous glass doors that keep the flame visually present within the sauna.
GreenFlame is developed as part of Harvia’s longer-term work toward cleaner combustion, dependable performance, and durable wood-burning heaters.
Legend GreenFlame brings Harvia’s renewed combustion technology into the sculptural, stone-filled structure that defines the Legend family. The open steel frame surrounds a generous mass of heated stones, helping the sauna release rich, lingering steam while preserving the strong visual presence and traditional character that make Legend distinctive.
The Legend 240 GreenFlame is designed for medium-sized sauna environments where abundant stones, a broad view of the living fire, and a softer traditional steam experience matter as much as cleaner wood combustion.
Linear GreenFlame places Harvia’s cleaner-combustion approach inside the quiet, architectural silhouette of the Linear family. Its restrained matte-black form keeps the heater visually controlled, allowing timber, glass, stone, and the surrounding sauna architecture to remain calm and uncluttered.
The Linear 22 GreenFlame pairs this minimalist character with a generous glass door that gives the living fire greater presence. It is a refined choice for buyers who want dependable wood-fired heat, a compact premium expression, and a more considered combustion system within the same heater.
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A GreenFlame heater still requires a properly planned venting path. The chimney and connecting components must be compatible with the selected heater, the sauna structure, the route through the building, and applicable installation requirements. The heater creates the fire and heat. The chimney gives that fire a safe and functional path outward.
Continue exploring Harvia heaters, complete sauna environments, and the wider collection of products created around heat, restoration, and authentic sauna living.