Polluted Load

• The first thing to check when the dryer is making too much noise is the load drying in the chamber. Loads that have stray buttons, coins, or other objects can result in noises ranging from a gentle tapping to a loud clatter. If left unchecked, these items can scratch and damage the inside chamber and can even get lodged in the heat vents. Empty all pockets before washing to prevent this problem.
  
  

Knot

• Another noise that could result from problems with the load is a thumping noise. This can result from clothes that have become knotted or balled up. The result of balled clothing is similar to putting a regular ball in the dryer chamber: the ball rolls around and thumps against the bottom of the dryer as it falls. Prevent this by adding large items separately instead of pulling them from the washer in a group. Should thumping sounds occur, check the load and untie any apparent knots in clothing.
  
  

Gas Valve

• Gas dryers often make loud clicking sounds throughout the drying cycle. This is caused by a gas valve that opens and closes repeatedly to allow heat to increase without causing a fire hazard. This sound is normal and doesn't require repair.
  
  

New Dryer Sound

• A dryer that's new may make a squeaking or squealing sound. This is because the bearings and rollers are new and still experiencing some friction while passing around their tracks. Although loud at first, this sound should diminish after about five loads.
  
  

Constant Squealing

• The sound of constant squeaking and squealing as the dryer completes its cycle can also be caused by worn or broken parts such as bearings, rollers, or gliders. When these parts wear out, the drying chamber is forced to spin on the raw metal casing that surrounds it. If you suspect worn parts, call a qualified dryer repair professional for service.