The answer to 'why is my dryer vent buildup' is that lint and debris can accumulate in the dryer vent over time, restricting airflow and causing the vent to become clogged. This is a common issue that can lead to longer drying times, increased energy usage, and even potential fire hazards.
Some common causes of dryer vent buildup include not cleaning the vent regularly, using the wrong type or length of vent hose, and having bends or kinks in the vent that trap lint. Symptoms of a clogged vent include longer drying times, the dryer running hotter than normal, and lint or debris blowing out of the vent.