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Why Is Condensation on Ductwork a Problem?

It might not seem like a big deal, but condensation on ductwork can be a major issue. The constant presence of condensation could cause damage to drywall, insulation and framing. It will also create the perfect environment for mold growth, which if left untreated will become a major health issue.

First let’s talk about why you have condensation on your ductwork. Condensation is the result of moist warm air cooling as it hits the cold metal of the duct. Therefore if you don’t have adequate insulation on your ductwork, or if there is excessive moisture in the air, you will end up with condensation on your ductwork.

Many people do not even realize this is happening until it is too late. Checking things out before it becomes an issue is an important thing for all home owners to do.

The ducts may be in the attic, basement, garage or crawl space. Removing excess moisture will be the first step. Inspecting them for proper insulation is the next step.

Head over to the Next Page to see how to solve these issues.


If you find condensation on your ductwork, you need to reduce the moisture in the area.

If your ducts are in the attic, you need to make sure the attic is well vented with the installation of soffit and roof vents.

If the ducts are in a basement or crawl space, adding a dehumidifier will help get the moisture out.

Then proper insulation and sealing your ducts will help stop the condensation and also save you money.

Watch this video to see how to properly seal your ductwork.

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