There could be many reasons that your fireplace isn’t functioning correctly, and we want to help you solve the problem. Below is a list of potential issues and their respective solutions. Note that this list of problems/solutions is simplified, and a correct understanding of fireplaces requires an expert-level knowledge of airflow patterns.
A spark arrestor prevents the emission of flammable debris from sources of combustion. They are designed to keep sparks and embers from jumping out of the chimney. Spark arrestors usually have a double layer of metal mesh that catches embers but allows smoke and gases to exit the chimney.