New York Low Pressure Boiler Certificate of Fitness (COF) 2025 – 400 Free Practice Questions to Pass the Exam

The correct answer identifies that improper operation of a boiler can lead to increased emissions of pollutants. When a boiler operates inefficiently or is not properly maintained, it may not achieve complete combustion of the fuel it uses, resulting in the release of harmful byproducts such as carbon monoxide, nitrogen oxides, and particulate matter. These emissions are detrimental to both indoor and outdoor air quality, contributing to environmental concerns and potential health hazards for individuals exposed to them.

As for the other options, they relate to various aspects of boiler operation but do not directly address the air quality impact as effectively as emissions do. For instance, increasing humidity levels can affect comfort and promote mold growth, but it's less about air quality than pollutant emissions. Reducing the need for ventilation may not directly correlate with improved air quality since insufficient ventilation can lead to a buildup of indoor pollutants. Lastly, while higher energy costs are a valid concern in terms of operational efficiency, they do not have a direct connection to air quality issues stemming from improper boiler operation.