Hey Mary,
Retrofitting your A/C system means that a qualified technician is going to change certain aspects of your A/C system to accept and run with the new, environmentally friendly refrigerant (r-134A). He will basically flush the system, change the compressor oil and add special fittings for access. It can be costly, but far less if your were to continue using the older, more expensive refrigerant! (R-12) Let us know!
Chris
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Monday, January 22nd, 2007 AT 11:27 AM