As I go into a home to do an energy audit, one of the first things I do is look at the heating, ventilating and air conditioning (HVAC) system's supply air vents. The supply air vents should be clean. If they are not it tells a tale.
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| Dirty air vents may indicate leaks in a home's ductwork. |
A dirty vent can be a harbinger of problems in a home. It may mean that the HVAC system filter has not been changed often enough. That can mean the indoor coil is dirty and may need to be cleaned so it functions as efficiently as possible.
It also could indicate that there is a problem in the attic and there may be problems with the ductwork or that the ductwork may need to be sealed. Whether you seal the ducts yourself or hire a contractor, make sure to use UL 181-approved materials.
The HVAC system filter should be changed on a regular basis — monthly is ideal — and the attic should be inspected regularly for duct leakage. When was the last time your ducts were inspected?
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