The repair man says that leaks are most common in a place that is not repairable without using leak sealant, which would void a warranty and his company doesn't offer that service. My system is using R-22. I feel like I should call another company that is willing to try the sealant before replacing my system with one that uses R-401a. However, if the best option is to get a new system, I'd rather hurry up and get it over with.
Can someone tell me what is common practice for evaporator coil replacement?