Furnace was overheating due to this indoor AC coil wearing a fur coat and blocking air! Literally, due to accumulation of dust and dander over the years! Took coil completely apart, Got the hair and dirt all out of the coil and now this system has gotten its efficiency back with more airflow throughout the hvac system. Runs like it should now. Call us for your coil cleaning and maintenance today! We can work on any brand system.