What is the effect of low combustion air on efficiency?

Low combustion air negatively impacts efficiency primarily by causing incomplete combustion, which subsequently increases emissions. In a properly functioning oil heat system, adequate combustion air is essential for ensuring that the fuel burns thoroughly. When there isn't enough air, the fuel does not combust completely, resulting in unburned fuel and byproducts such as carbon monoxide and soot.

This incomplete combustion means that less energy is converted into usable heat, thus reducing the overall efficiency of the system. Furthermore, the increase in emissions is a critical concern, as it not only represents wasted fuel but also contributes to environmental and safety hazards. This is why ensuring the right amount of combustion air is crucial for optimal operation of oil heat systems, as it facilitates full combustion, maximizes heat output, and minimizes harmful emissions.