Yes, cats can and do climb air ducts. Airducts are usually quite small, so the cat can easily get its head and body in the duct and squirm around. The duct may even be warm or cozy from the heat of the furnace or air conditioning unit.
Cats typically try to jump out of an air duct but quickly become stuck because their claws don’t fit well into the tiny openings. A surprised cat may vocalize in frustration or get scared when it can’t get out. Sometimes, cats will die after getting stuck in an air duct.
If your cat is climbing inside air ducts, take a moment to consider how you might be able to prevent this from happening. Make sure there are no cords or otherobjects hanging near the opening, and be sure to close all doors to air conditioning units and furnaces before you go anywhere near them. You might also want to install a doorstop on the door to make it