fthom asks,
Just last week, the central air conditioning fan inside my home started making a constant loud noise. What could be causing it? Could the fan be hitting something?
Central Air Conditioning Fan Making Loud Noise
fthom asks,
Just last week, the central air conditioning fan inside my home started making a constant loud noise. What could be causing it? Could the fan be hitting something?
There are several possible causes for a noisy forced air system. When a fan's bearings begin to wear out, it's generally characterized by a lot of vibration and racket. There's also the possibility the fan is baked with dirt or dust, which is forcing it out of balance, again resulting in noise. There's also a chance something inside the compartment has gotten loose and is rubbing against those fan blades. To get to the bottom of the problem, have the fan thoroughly evaluated by a HVAC tech. While that tech is in your home, make sure he or she also services your entire system for the upcoming season – whether it's summer coming up, or winter.
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