Upon arrival, I found the unit blowing hot air with the liquid line being scalding hot. I immediately went outside and found the outdoor unit exhausting extremely hot air. This indicated that the outdoor unit was too dirty and cycling heat back into the house. I rinsed the outdoor unit and got the unit to have a 10 degree temperature drop. The refrigerant pressure do not look awful, but they are jumping around with a higher than normal subcool. I proceeded to go back inside and found the entire indoor unit is filthy. I performed a sweat check on the evaporator coil because I suspected the evaporator coil to be internally plugged. With some of the tubes not seating and the others are sweating, I can confirm the evaporator coil is restricted. Due to the change of refrigerant as of January 1st of 2025, we can no longer replace the evaporator coil once the warranty expires. The unit is from 2013. Even if it was registered, it would only have warranty until 2023. The system needs to be comp