If you have a wood-burning fireplace or stove, it's essential to keep your chimney clean to ensure proper ventilation and prevent potential hazards such as chimney fires. But how do you know when your chimney needs cleaning? Here are some signs to look out for:

1) Excessive creosote buildup: Creosote is a black, tar-like substance that accumulates inside the chimney as a result of burning wood. If you notice a thick layer of creosote on the walls of your chimney, it's a clear indication that your chimney needs cleaning.

2) Foul odor: A musty or unpleasant odor coming from your fireplace or stove can be a sign of a dirty chimney. The smell is caused by the buildup of creosote and other debris inside the chimney, which can also attract insects and small animals.

3) Smoke inside your home: If you notice smoke or soot inside your home while using your fireplace or stove, it's a clear indication that your chimney is clogged and needs cleaning.

4) Slow-burning fire: If you find that your wood-burning fire is not burning as brightly or as hot as usual, it's possible that your chimney is obstructed and not allowing proper airflow.

5) Visible debris: If you notice debris such as twigs, leaves, or animal nests inside your chimney, it's a clear sign that your chimney needs cleaning. These materials can obstruct the chimney, preventing proper ventilation and posing a fire hazard.

In general, it's recommended to have your chimney cleaned and inspected at least once a year, or more frequently if you use your fireplace or stove frequently. By paying attention to these signs and scheduling regular chimney cleanings, you can ensure a safe and functional fireplace or stove.