AC Blower fan noise

[Innuendo]

I still have no idea what those random clips on the fan blades are for, anyone got any ideas?

Are they the slide on type with sharp points? If so, I believe they are balancing weights.

[Dawso]

Yes thin metal clips, no weights on them, not on mine anyway. They weigh hardly nothing on their own. I did try tuning with them i.e. moving them up and down but it didn't seem to make any difference.

[Innuendo]

Yes thin metal clips, no weights on them, not on mine anyway. They weigh hardly nothing on their own. I did try tuning with them i.e. moving them up and down but it didn't seem to make any difference.

I believe they are the weights. Just to balance the spinning fan. Don't know 100% percent but was told this many years ago when we use to disassemble heater fans for chroming.