I just had my AC fan replaced and now it's making a humming noise.
What is your question?
It didn't make a humming noise when the AC was running prior to the fan replacement, but now it is? Why would this have changed? What needs to be done to fix it?
What makes this problem better or worse?
Worse when on lower AC levels.
How long has your 2006 Lexus RX400h had this problem?
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It stopped working. But before it stopped working it never made the humming noise.
who did the work and what brand blower motor was installed?