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HVAC Duct Replacement: Signs Your Ductwork Should Be Replaced

October 23, 2025
Duct Replacement

Your ductwork system is an essential component of your HVAC system. It’s a network of connections that delivers heated or cooled air to all the rooms in your home. The duct system often will last a long time before you need to modify or replace the system. However, duct problems can lead to a less efficient system causing higher electricity bills. Ductwork problems can also lead to poor indoor air quality decreasing your overall comfort. The following are the most common signs of ductwork issues and may need duct replacement.

Signs Your Ductwork Should Be Replaced

Higher Than Normal Electricity Bills

If there are issues with your ductwork system, your HVAC system will work harder than it normally does or should causing the spike in your electricity bills. If it has a small leak, the spot can be sealed. Otherwise, you may need duct replacement to keep your bills at an affordable level.

A Dusty Home

A damaged duct can lead to an excess amount of dust in your home. Leaks not only allow cooled or heated air to escape, but also allow dust and dirt to get into the ductwork and spread them throughout your home. This can lead to a damaged HVAC system, but not only that it can worsen allergies as well as reduce the efficiency of your system.

Poor Indoor Air Quality

Bad odors, or stuffy air can be a sign of poor air quality. A leak in your ductwork system allows pollutants to enter the system and circulate throughout the home. This can worsen allergies and other respiratory issues. It can also spread mold throughout the ductwork and the rest of your home leading to unpleasant smells.

Odd Noises

If you hear odd or loud noises that may be a sign that the ductwork system is undersized. Shaking, rattling or hissing sounds as the air flow travels through the system can be a sign of damaged ductwork. Rattling can be a sign of loose ductwork, while hissing sounds can be a sign of air leaks.

Inconsistent Room Temperatures

If some rooms in your home remain hot while others are cool or airflow has decreased, it may be a sign of a leak in the system. Inconsistent airflow from a blocked or damaged duct can cause inconsistent room temperatures. It can also be a sign of unbalanced ductwork, so always make sure to check with a professional so the issue can be diagnosed correctly.

Old Ductwork

Most ductwork will last between 10 and 15 years before issues come up. Age of ductwork is something to consider greatly when you are deciding duct replacement.  If the ducts are older you should consider replacing them before major issues arise so your home stays comfortable.

Advantages of Ductwork Replacement

If your ductwork is starting to cause issues call a professional. It may be time to replace the system or at the very least seal any small leaks. Replacing or repairing your ductwork does have its advantages. Once your ducts are working properly, they will no longer be working as hard to cool and heat your home. This will lead to less wasted energy causing increased energy efficiency and lower electric bills. New ducts also lead to less allergens and odors polluting the indoor air of your home. Replacing or repairing your ducts also means improved airflow and therefore an increase in temperature regulation. This all leads to an an overall healthier and longer lifespan for your HVAC system.

The duct system plays a very important role in determining the efficiency and overall health of you HVAC system. Please contact us in order to help you determine whether your ductwork needs a minor repair or replacement. LA Construction Heating and Air is a certified HVAC Contractor. We would be happy to assist you with any questions you may have. Feel free to contact us online or give us a call today at (818) 341-3406. To learn more about services our company offers, please visit our homepage.

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