Hey! Moving to a big house my husband and I Install air conditioner and vents!It was a very cool decision. The air in the house became much cleaner. But for the ventilation opening to work well, it needs to be cleaned regularly. I found a cool service to clean the ventilation openings.I can recommend you this site
https://comfortclean.com/dryer-vent-cleaning/ .You deserve clean air and good service. I recommend from the heart!