Why your fireplace smells in summer
A smelly fireplace in the summer is usually due to humidity and soot, but there are other causes to consider.

2 min read
Humidity and Moisture
During summer, the combination of high humidity and creosote or soot deposits can cause unpleasant odors. Moisture in the air interacts with these deposits, leading to a musty, acrid smell that can permeate your home.
This issue is more pronounced in homes with a chimney that doesn't vent well, as moisture can accumulate in the flue. Regular cleaning and proper ventilation are important to minimizing these odors.
Draft and Airflow Issues
Negative air pressure within the home can reverse chimney draft, drawing smells into living spaces. This can occur when air conditioning or other ventilation systems draw indoor air out, causing the chimney to pull air down instead of venting it outside.
To address this, ensure that your home has adequate ventilation and consider installing a top-sealing damper, which can help control airflow and keep odors at bay.
Animal Intrusions
Animals seeking shelter can sometimes find their way into your chimney, leaving behind nests and debris that contribute to foul odors. Dead animals can also introduce strong and unpleasant smells.
Regular inspections and installing a chimney cap can prevent animals from entering, significantly reducing the risk of animal-related odors.
Got a chimney question?
Tell us the town and what you are seeing. We call back to set a time.