What is the most common burner used in an induced draft furnace?

The most common burner used in an induced draft furnace is the inshot burner. This type of burner is designed to mix air and gas in a manner that provides efficient combustion. Inshot burners draw air through an opening, allowing fuel to be injected into the combustion chamber. This design is advantageous because it creates a strong, stable flame and ensures complete combustion of the gas, which is crucial for both efficiency and safety in heating systems.

Induced draft furnaces utilize a fan to help expel exhaust gases, and the inshot burner complements this design by promoting effective flame stability and minimizing backpressure. This contributes to better performance and reliability of the heating system.

Other types of burners, like atmospheric burners, operate differently and may not work effectively in the specific context of induced draft applications. Understanding the characteristics and applications of different burner types helps ensure proper selection for furnace systems, enhancing both performance and longevity.