What is the impact of a dirty burner nozzle?

A dirty burner nozzle can significantly impact the performance of an oil heat system by causing poor atomization and inefficient combustion. When the nozzle becomes dirty, it can become clogged or partially obstructed, which prevents the fuel from being atomized properly. Proper atomization is crucial for ensuring that the fuel mixes effectively with air, allowing for complete combustion.

If atomization is compromised due to a dirty nozzle, the fuel droplet size increases, leading to incomplete combustion, which can create a variety of issues such as increased emissions, soot build-up, and reduced heat output. Additionally, inefficient combustion can lead to higher operational costs and can even result in damage to the burner over time.

The other options do not accurately reflect the consequences of a dirty burner nozzle when compared to the impact on atomization and combustion efficiency. Lower operating temperatures and smoother fuel flow are not characteristics associated with a dirty nozzle, nor does it increase the life expectancy of the burner.