I had an almost identical situation, and I also thought I would have to replace the air conditioner. But after contacting https://acustomerfirstac.com/, it turned out that the problem was with the maintenance, not the system itself. The technician checked the refrigerant level, cleaned the components, and fixed a minor malfunction. After that, the air conditioner started cooling normally again. I liked that they didn’t push anything unnecessary and honestly explained that replacement was not necessary at this time.