The air-conditioning ducts in your HVAC system provide cool forced air to all the rooms. The air quality will decrease when they need cleaning and, in many situations, the amount of air will decrease too. That will result in an unreliable duct system this taxes both your blower engine and your pocketbook. That is not the only thing to look for when deciding when you need to clean up your AC duct work, however, that isn’t the only thing you need to check for when deciding when you need to clean your AC duct work.
- Replace the filter
An uncleaned air filter drops out dirty air through each pipe and makes it look like the duct needs to be cleaned. Take the part of the filter out and replace it with a new filter. Turn on the AC unit and watch a vent when the engine switches on during initial startup. If, when the motor kicks in, you notice a blast of dust from the vent, you need to clean the duct.
- Listen to the Airflow from the duct
There should be no other noise than the motor in the blower. If there is a whistling noise, or the airflow is generally noisy, that can mean a blockage in the ductwork somewhere. A blockage may occur from an insulation piece that is sucked into the ducts, a broken-off filter piece or a damper that is either partially closed or caked with dirt. The problem must be found in all instances, and is necessary to have your ac service and duct cleaning done.
- Check the Airflow
When doing so, make sure that the vents are fully opened. If you find that one of the ducts has less airflow than the others, the cleaning of the duct is important.
- Check Return Air Inlets
They are often located on the floor, and things are often dropped down the vents. This can cause the air blower motor to starve to death. If you notice any blockage inside a return vent, you need to clean it up.