I ended up replacing the entire system with a ductless HVAC, a fact that really angered me.
Since moving out from home, I have interacted with numerous cooling technicians working on my unit, some good and some bad. I once had a cooling workman come to my house after my heat pump started malfunctioning. The a/c representative got to work performing the air conditioning maintenance or so I thought. After some time, he stated that some components of the unit were damaged and so he needed the HVAC supplier to deliver new components. When I checked the components, they seemed fairly new, however since I was no air conditioning expert, I left him to his job but I made a note to take the components to another a/c worker or local contractor for a second opinion. The technician continued with the servicing, air duct cleaning then he also replaced the filter, however with a filter that was of a different HVAC brand. I was not sure whether this would affect the function of the unit. The system was working after the technician left but not for long, the next day, it broke down again so I called another technician. It turns out that the first technician had totally messed up my unit by replacing the heat and ac products with substandard ones. I ended up replacing the entire system with a ductless HVAC, a fact that really angered me. Fortunately, the new system also came with an air quality system to help with whole home air purification. Thankfully I got back my indoor comfort and peace of mind but I learned to ask for credentials for any technician claiming to be an expert. It is also important to hire a technician that is allied to a company for responsibility purposes.