Take, for example, a wood stove or pellet stove, which naturally diffuses heat through radiation and natural convection. The problem is that the heat remains concentrated around the appliance and is not distributed evenly throughout the room or neighboring rooms. 

The fan solves this problem:

• it accelerates the diffusion of hot air up to 220°C,
• it makes the room temperature more consistent and comfortable,
• it allows several rooms to be heated with a single stove via ducts.

The fan only blows healthy air heated by heat exchange: it never puts the air in direct contact with combustion fumes.

Where is the fan located in a stove?

The position and role of the fan vary depending on the type of appliance:

• Insert or closed fireplace

The fan is built into the bottom or back of the fireplace. It blows hot air through front vents or via a network of ducts.

• Pellet stove

These appliances are always equipped with built-in fans:
- a smoke extractor,
- a convection fan, located at the bottom or rear, which distributes hot air into the room.

• Centralized hot air distribution systems

The fan is located in the attic, to draw hot air from around the duct and redistribute it through insulated ducts.

 

Centrifugal fan

The scroll centrifugal fan, single inlet type for hot air, draws air in at the center and expels it through a side outlet. The single inlet fan has the advantage of being quiet.
It is suitable for transporting hot air in duct networks because it offers higher pressure.

 

How is the fan motor protected from heat?

Hot air fan motors must be protected from intense heat. Several solutions exist:

• Positioning outside the hot air flow (motor outside the volute, separated from the impeller).
• Thermal insulation with resistant partitions or seals.
• Natural cooling by the ambient air in the room.
• Cooling blade on the motor shaft.

 

EC fans: the new generation

Our ECOFIT GTAG9 120x62R hot air fan incorporates EC (Electronic Commutation) technology, which is based on high-efficiency brushless motors.
The advantages of EC fans:

• Energy savings
• Quiet operation
• Extended service life thanks to the absence of brushes and improved thermal management.
• Compatibility with modern controls and home automation systems (0–10 V, PWM, Modbus, etc.).

The result: greater thermal comfort, less noise, and energy savings.

 

Conclusion

The fan is an essential component for improving the comfort of a wood or pellet stove:

• it distributes heat quickly and evenly,
• it allows you to heat several rooms with a single appliance,
• with EC technology, it offers a quieter, more durable, and more energy-efficient solution.

Our GTAG9 120x62R fan is particularly well suited for these applications thanks to:

• Its integrated EC technology
• Its motor protected against hot air flow
• Its centrifugal ventilation technology offering high pressure for transporting hot air in a duct system

This fan is also suitable for any other application requiring air to be transported at temperatures up to 220°C.