Cleaning the condenser coils can be a simple task, but it's important to follow the manufacturer's instructions. - Use a soft brush or vacuum cleaner attachment to clean away any dust and debris from inside your refrigerator or freezer. - If you have hard water deposits on your coils, use vinegar or white distilled vinegar (1/2 cup) in 2 cups of warm water as an alternative cleaning solution that won't harm them or leave behind streaks as some commercial cleaners do.