If your dryer takes too long to dry, check for a vent blockage. Many dryers have a duct blockage indicator that signals when it’s time to clean the vent. Step 3: Clean the Moisture Sensor.

An icon in the shape of a lightning bolt. ... Depending on what type of dryer duct you have, you may need to use a screwdriver to unscrew the vent clamp holding the duct in place.

If your dryer used a soft foil-style vent to link to the wall duct, get rid of it. These hoses are a known fire risk. I personally replaced the original semi-rigid venting with a pair of 90-degree ...

If not, the vent or exhaust duct may be blocked with lint. Start by disconnecting your dryer from the power source. And if you have a gas dryer, also turn off the gas valve near the dryer.

If you suspect a mold problem — either because of visible growth or a musty smell consistently coming from supply vents — cleaning ducts won’t do much good if it doesn’t eliminate the mold.