How Often Should You Clean You Air Ducts and Dyer Vents?Dryer vents should be cleaned about once a year. However, if the family size is above average, the dryer vents may need to be cleaned more often. For air ducts, you can clean them about once every two years. The rate at which you clean will depend on various factors. For instance, if you live in a dusty area, you may need to have the air ducts cleaned more often.For dryer vents, kids play an important role in how often you clean them. The reason for this is that kids often require new clothes as they grow. New clothes produce a lot of lint, which increases the chances of dryer vents being clogged.

Signs that Your Dryer Vent and Air Ducts Need Cleaning For Dryer VentsIt takes longer than usual to dry clothes. A clogged vent traps moisture, which should be escaping. Thus, it means clothes remain damp even after it stops running. The result is that you may need to run multiple cycles just to clean clothes.
You dryer heats up. If the dryer vents are clogged, it may be preventing heat from escaping efficiently. Consequently, you may need to call in the experts to clean the vents.

For Air Ducts
You see rodents and vermin exiting and entering your ductwork.
If you see signs of mould growing within your ducts
You see poofs of dust as the air exits the vents
In general, if it has been more than a year since you had the dryer vents and air ducts cleaned, you may need to call in some cleaning experts.