Which factor can influence the efficiency of an oil burner?

The quality of fuel oil is a critical factor that influences the efficiency of an oil burner because it directly affects the combustion process. High-quality fuel oil typically has a consistent viscosity and better combustion characteristics, leading to a more complete burn. This results in higher energy output and reduced emissions, which are important for both efficiency and compliance with environmental standards.

In contrast, lower-quality fuel oil can have impurities, higher particulate content, or inconsistent properties that can lead to incomplete combustion. This can create soot build-up in the burner, reduced heat output, and increased emissions, ultimately impacting the system's efficiency and requiring more frequent maintenance. Overall, ensuring high-quality fuel oil is essential for maximizing the performance and efficiency of an oil burner.