Household Pests
During cold winter nights, animals will find shelter wherever they can. Your air ducts are often a source of comfort and warmth for mice, rats, and other pests. Not only are animals and their nest obstructions in your duct system, but they can also cause horrid odors when they crawl inside and cannot escape. If you see holes in your outdoor ducts and vents, you can seal them with a screen or mesh, and have your indoor ductwork regularly inspected for any signs of vermin inhabitants.
Old Age
Regardless of the original material, every type of ductwork experience decays with age. Parts of old ductwork may be inclined to leak or collapse if left unattended. When portions of ductwork collapse, it can obstruct airflow and cause your HVAC system to work extra hard to balance the lack of circulated air. This problem will then raise your home’s utility bill. The good news, however, is that a strong HVAC system should last for many years. Also, if you have your air ducts cleaned regularly, it can help preserve their lifespan.
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