The answer to 'why is my condenser smells bad' is that a smelly condenser is usually caused by mold, mildew, or rotting debris buildup. This can happen if the condenser coils are not cleaned regularly or if there is poor drainage around the unit. The bad smell is a sign that the condenser needs to be cleaned and maintained.
Symptoms of a smelly condenser include a musty or rotten odor coming from the outdoor unit. This can indicate that there is organic matter decaying inside the condenser, which can reduce its efficiency and even damage the components over time. Regular cleaning and maintenance is important to prevent this issue.