What does the term "combustion air" refer to?

The term "combustion air" refers specifically to the air needed for burning gas in appliances. This is critical for the operation of gas appliances such as furnaces, water heaters, and stoves. Proper combustion air is necessary to ensure efficient burning of fuel, which in turn affects the energy output, safety, and emissions of the appliance.

When gas burns, it requires a specific mixture of fuel and air to create a complete combustion process. If there isn’t enough combustion air, the appliance may not function correctly, leading to incomplete combustion, which can produce carbon monoxide and other harmful byproducts. Therefore, ensuring an adequate supply of combustion air is vital for both the efficiency of the appliance and the safety of the environment in which it operates.