Acidic cleaners attack mineral scale and rust, but they etch soft metals and require immediate, thorough rinsing. When your air conditioner struggles to keep the room cool, the culprit often isn’t the refrigerant or the compressor—it’s the grime caked onto the coils. Always rinse thoroughly with water to avoid leaving any residue on the coils. Yes — Dawn dish soap is a great option for breaking down greasy buildup and stuck-on grime. Spray gently on the coils and blower wheel (avoiding electronics), then wipe or rinse carefully with a soft brush or cloth.
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