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Discussion Starter · #1 ·
With the heat in the mid 90s here today, the a/c is getting a workout.

The condensing unit is a little noisy. It is much quieter, since I replace a run capacitor and contactor last year. I'm pretty sure the motor was not getting full power on all phases.

I'm wondering now about the fan blade and dirty coils. I have read to use "coil cleaner". Is this necessary? What is coil cleaner, simply dish soap, or some other household cleaner?

What about the fan blade. My unit is a Goodman Manufacturing condenser, with a 3 blade fan. I'm thinking a 4 blade would be quieter and possibly bring more air flow through the coil. I would get one sized to the right motor hp. Is this a good idea? Or would simply replacing the existing 3 blade with a new 3 blade reduce noise? The blade is roughly 30 years old.

Thanks for any input.
 

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I use my hose and clean the coil when they get some of those nasty cottonwood debris on them. I don't see a need for anything else. Also make sure your unit is level. Can sometimes cause noise issues along with Freon not flowing properly.
 
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