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  • October 25, 2023

How Common Are Rodents Inside Air Ducts? Understanding and Resolving the Issue


A warm, sheltered, and rarely disturbed environment is what many pests seek—and unfortunately, your home’s air duct system can provide just that. One of the most concerning invaders homeowners might encounter in their HVAC systems are rodents. Here, we delve into the issue of rodents in air ducts, understanding their presence, how they get inside, and effective measures to eliminate them.


The Unwanted Tenants:

Rodents such as mice and rats are incredibly resourceful and adaptable creatures. They can easily find their way into homes, and subsequently, air ducts, seeking shelter and food. While not an everyday occurrence, their presence in air ducts is not uncommon, especially in areas where rodent populations are high or during colder months when they seek warmth.


Entry Points:


  1. Gaps and Holes: Tiny cracks or holes in the exterior of a building can be an entry point for rodents. They can squeeze through surprisingly small spaces.
  2. Vents: Unprotected vents, especially ground-level ones, can be an inviting entry point for mice and rats.
  3. Damaged Ductwork: Any wear or tear in your ductwork can be an access point for rodents.




  1. Regular Inspection: Check your home’s exterior for any gaps, cracks, or holes and seal them promptly.
  2. Protect Your Vents: Installing mesh screens or vent covers can prevent rodents from entering.
  3. Professional Cleaning: If you suspect a rodent infestation in your ducts, it’s advisable to contact a professional duct cleaning service. They can clean and sanitize the system.
  4. Pest Control: In cases of severe infestations, a comprehensive pest control approach may be necessary.


For more insights on maintaining clean air ducts and addressing common issues, www.ductcleaning.org offers a detailed course on Choosing a Duct Cleaning Service which provides valuable knowledge on the subject.


Furthermore, the National Pest Management Association (NPMA) provides resources on understanding pests and methods to manage them effectively.