3. Once you have cleared a minimum 2-foot clearance around the entire unit, the next step is to remove the outer piece from the condenser unit. That’s the piece that protects and goes around the condenser. Depending on the need, you may want to consider using a soft-bristle attachment to vacuum the metal fins.
Before using your garden hose to complete the cleaning process, unscrew the top grille and prop it open. The fan should be attached, so be very careful about not stressing any electrical connections. The point is to avoid directly spraying or hitting the fan with water when you are cleaning the condenser fins.
If you cannot unscrew the top grille or lift the fan out, just be careful not to directly hit it with water when cleaning your fins.
4. Next, it’s time to use your garden hose to clear away any dirt buildup. The most important thing here is to clean the condenser coil. You can use a condenser cleaning solution, available at your local home improvement store, but regular soap and water will do.
Simply brush your cleaning solution on the coils (or use a spray bottle). Try to get around the entire unit, but be careful not to bend any fins.
After you have wiped down the fins with your cleaning solution, be sure to target the water directly at the fins, and do not hit the fins from the side. If a few fins do bend, or if any were previously bent or damaged, you can fix them afterwards.
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