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[onewhippedpuppy]

Originally Posted by MBAtarga

If/when you use the A/C coil cleaner, rinse off the coil by spraying from the inside of the condensor. Spraying from the outside of the condensor will force dirt further into the coil fins and can make the coil operation worse.

Good point, I forgot to mention that. Make sure you kill the power to the condenser (first!!!), there's usually a breakout box mounted on the wall next to the unit. You'll have to pull the top mounted fan, but it's normally only a few sheetmetal screws.