What Are the Common Causes of Noisy HVAC Ducts?

Strange noises coming from your HVAC ducts can be frustrating. To eliminate them, you should determine the root cause of these sounds. In this blog post, trusted AC service provider EZ Air Conditioning and Heating discusses the common causes of ductwork noise. 

Duct Expansion and Contraction

As your HVAC system heats and cools your home, the ducts may expand and contract. This is normal but can sometimes result in popping or creaking noises. Ensuring proper insulation and secure connections can help reduce these sounds.

Air Pressure Imbalance

If you’re hearing whistling or humming noises, it could be due to an air pressure imbalance in your HVAC system. This issue can be caused by blocked vents, closed dampers or an improperly sized system.

Animal Infestation in the Ducts

Noises like rattling or banging can indicate that something is obstructing the airflow in your ducts. Usually, a rodent or bug infestation causes the sounds from HVAC ducts. If you notice droppings or other signs of infestation, schedule pest control services to diagnose and address the problem. To make your ductwork less appealing to animals, get your ducts cleaned regularly by your HVAC technicians.

Loose or Damaged Ductwork

Over time, ducts can become loose, damaged or start to separate at their connections. Any of these problems can lead to air leaks and a variety of noise issues.

Oftentimes, loose or damaged ductwork is a result of improper installation. This sagging or bending of the ducts makes it harder for air to move, leading to increased static pressure and noise. To avoid ductwork problems, make sure to hire an experienced contractor when having your HVAC ducts installed. 

Dirty Air Filter

Clogged or dirty air filters can affect the movement of air in your HVAC system and cause noise. That’s why HVAC filters should be cleaned or replaced on a regular basis. Moreover, it’s best to schedule routine duct cleaning services to avoid debris buildup that can restrict airflow.

Trust HVAC Experts for Your Ductwork Needs

Addressing noisy HVAC ducts is important for maintaining a comfortable, quiet home. AC repair and AC installation are vital to preventing and remedying this issue. If you’re experiencing noisy HVAC ducts in your home in San Antonio, TX, you can rely on our team at EZ Air Conditioning and Heating. Call (210) 429-9186 or complete our contact form to schedule a consultation.