I have a 1991 Rheem 2.5 ton A/C and coil. Last summer, it lost all 4 lbs of R-22.
I've got several proposals for replacing it with a new compressor and coil using R-410a. All the proposals specify reuse of the existing 3/4" and 3/8" lineset. The suction line has a severe bend, almost to the point of being crimped, just before it enters the outdoor unit (pic attached). I've also asked that the new unit be relocated a few feet to get it away from the fence and gas meter it is too close to currently.
I've read a lot of stuff on this forum about flushing, nitrogen & brazing, line driers, etc., but I'm having a hard time making sense of it all and what applies to my situation.
The companies I'm looking at are well established and have good reputations, but I don't want to assume anything.
Could you offer any advice on questions I should be asking about how they intend to flush and reuse the lineset?
Do I need a line drier?
Does the fact that my old system has a leak have an impact?
Is there anything that I need to get in writing?
Any pointers on how the lineset should or should not look outside after they're done (pics of current attached)?
Thanks a lot for any advice you can give me,