If you have ducts in your home, it’s smart to have them serviced and cleaned out periodically. Dust, dirt, and cobwebs can accumulate inside ducts. \
This junk can make it harder for air to travel through the home, which only makes your AC system work even harder and burn more energy. Dust and debris, and other stuff in the ducts can also deliver dust mites and other unpleasant additives into your breathing air. \
That’s not great, obviously. It pays to have the ductwork in your home cleaned out every few years. \
If someone inside the home has a high sensitivity to allergies or a compromised respiratory system due to asthma or some other problem, you might want to have the ducts cleaned out much more frequently. \