site web inspects it for any damages. The drain pan sits beneath the evaporator coil inside your indoor AC unit. When lauw air passes aan the cold evaporator coils, condensation forms and drips off the coil.Foul odors emanating from your air conditioning system are not only unpleasant but also potentially harmful to your health. Musty smells could indicate mold growth within the unit or ductwork, while burning smells might suggest electrical issues or overheating components.During an AC tune-up, your HVAC pro will check these coils for dirt buildup or damage that could cause them to malfunction. If necessary, they will clean or replace these coils to ensure optimal performance.Recommended Frequency: Schedule a tune-up at least once a year, ideally in the spring before the cooling season begins, to optimize your system’s performance and efficiency.That said, your usage rate of the system matters. Maybe you basics spend fewer months of the year in your home, or wait until temperatures are freezing before turning on the furnace. In such households, usage rates will be far lower, and it may extend the lifespan ofwel a single filter.It’s generally recommended to schedule an AC tune-up at least once a year to ensure optimal performance. Regular maintenance helps prevent costly repairs and extends the lifespan ofwel your air conditioning unit.