If you had some kind of accident or damage to your home, it might be obvious that the ducts are damaged and need repair. However, other, more subtle harm to ducts may not be visible to you. Annual inspections are an excellent way to stay ahead of significant duct damage, but there are other signs you may need duct repair, such as: An Increase in Energy Bills – If there are gaps in your ducts, heat and cool air will escape before it reaches the rooms in your home. This requires your unit to work harder to heat and cool the house, raising your energy bills. Loud Sounds – If you hear any crashing or bending metal sounds, that could signify a break or crack in your ducts. Frequent Filter Changes – If your filter requires more frequent changes than usual it could be from more dust getting into the system than expected through cracks or gaps in the ducts. Signs of Pests – Pests and insects can find their way into ducts for nesting through cracks and tears. If you notice an increase in pests around the house, that could be a sign you need duct repair.