A fireplace in the home is not just a source of heat but also a visual centerpiece of comfort. To enjoy the view of a live flame without obstruction, modern wood-burning fireplaces are equipped with a “clean glass” system. It ensures long-lasting transparency of the glass without frequent cleaning. In SAVEN fireplace inserts, this system is implemented at a high technological level. It is based on a well-designed air supply and heat-resistant Schott Robax glass.
Design of the “Clean Glass” System in SAVEN Fireplace Inserts
The “clean glass” system in a fireplace (airwash system) is an engineering solution that keeps the inner surface of the fireplace glass clean using a special air stream. In SAVEN inserts, air is supplied to the combustion chamber through dedicated upper channels that evenly direct the airflow across the inner surface of the glass. This air curtain creates a barrier between the flame and the glass, preventing soot and smoke from settling.
A unique feature of SAVEN steel inserts is that the clean glass system is integrated directly into the combustion chamber body, and the control element is conveniently positioned for the user. This allows for optimal air supply adjustment and improves wood combustion efficiency. This design helps save fuel, generate more heat, and eliminates the need for frequent manual glass cleaning.
How the Air Curtain Works: Glass Protection from Soot and Fogging
The principle behind the clean glass system relies on a directed flow of preheated air delivered from the top across the inner surface of the heat-resistant glass. This creates an “air curtain” that physically separates the flame and combustion products from the glass.
This airflow not only prevents soot from settling but also promotes more complete combustion of volatile substances, which are the primary source of contamination. As a result, the fireplace glass remains clean and clear. You can enjoy the full beauty of the fire instead of looking through a soot-stained window. This is especially relevant for panoramic fireplaces, where aesthetics play a key role.
The main advantage of the clean glass system is reduced cleaning frequency. You don't have to wipe the glass after every fire. When used with quality firewood and proper air settings, the glass can stay transparent for many hours of burning.
How the Fireplace Glass Self-Cleaning System Works
- Fresh air intake
The combustion chamber receives fresh air through a special external pipe. Before entering the combustion zone, the air passes through a filter that removes larger particles.
- Formation of the air curtain
Part of the air is directed to the top of the insert and evenly distributed across the entire surface of the inner glass.
- Glass-ceramic rinsing
The air curtain prevents incomplete combustion products from settling on the glass, as any small particles are immediately carried into the combustion chamber by the airflow.
- Exhaust through the chimney
After passing through the flame zone, the purified air exits the fireplace along with combustion products through the chimney.
Why Schott Robax Glass is Used in SAVEN Fireplaces
The quality of the glass is critical for the clean glass system to function properly and for the overall safety of the fireplace. SAVEN fireplace inserts and stoves use high-quality, heat-resistant Schott Robax glass — a benchmark in the stove and fireplace glass-ceramic market. It is ideal for intensive use, withstands high temperatures, and offers perfect transparency.
1. High thermal resistance up to 760°C
Schott Robax glass is manufactured using a special process of tempering, chemical treatment, and polishing. With a thickness of 4 mm, it withstands extreme temperatures up to 760°C without cracking or deforming. This ensures safe operation even during prolonged use of a wood-burning fireplace.
2. Overheat protection
Even after 30 minutes of intense operation, the surface temperature of the glass remains between 50–200°C — several times lower than ordinary glass. This significantly increases fireplace safety in homes with children or pets.
3. Crystal-clear view of the flame
Thanks to its structure, Schott Robax glass provides a crystal-clear view of the fire — without streaks, cloudiness, or a gray tint. Combined with SAVEN’s clean glass system, it offers maximum visual pleasure without the need for constant cleaning.
4. Sound insulation for added comfort
The glass has excellent soundproofing properties. The pleasant crackle of wood is enjoyable only in moderation. Schott Robax prevents excess noise from the combustion chamber from disturbing your relaxation.
5. Reliable and safe in use
Thanks to a special gel in its composition, the glass foams under extreme heat, helping it hold together even if mechanically damaged. This makes the glass maximally safe and durable. With proper care, Schott Robax lasts tens of thousands of hours without losing quality.
SAVEN’s Clean Glass System: User Benefits
SAVEN steel fireplace inserts combine efficiency, aesthetics, and ease of maintenance. With the clean glass system, you benefit from:
- minimal maintenance — glass stays clean for a long time;
- better flame visibility — nothing obstructs the view of the fire;
- higher energy efficiency — improved fuel combustion;
- increased insert durability — clean glass supports better airflow;
- safe operation — the glass doesn’t overheat, crack, or pose a hazard when heated.
The clean glass system is an example of how modern technology makes SAVEN wood-burning fireplaces more convenient, safer, and aesthetically pleasing. With the inner glass airflow and Schott Robax glass-ceramic, you get clear glass without the hassle. It’s not only beautiful but also practical: durability, energy efficiency, and comfort — all in one solution.