Combustion efficiency can be increased when air is:

Increasing combustion efficiency is closely linked to the temperature and quality of the air used in the combustion process. Preheating the air before it enters the combustion chamber allows the gases to reach a higher temperature. This enhanced thermal energy helps in achieving a more complete combustion, which means that more fuel is effectively burned, and less heat is wasted.

When air is preheated, it also increases the efficiency of the combustion process by promoting better fuel evaporation and mixing, allowing the fuel and air to react more readily. This results in reduced fuel consumption and lower emissions, as the combustion process becomes more efficient.

While dehumidifying, ozonating, or filtering air can improve air quality to some extent, they do not directly contribute to increasing the energy available for the combustion process in the same way that preheating does. Preheating specifically focuses on optimizing the conditions under which combustion takes place, making it the most effective option for enhancing combustion efficiency.