I had already tried the r134a conversion on the existing equipment, but, it leaked out of the compressor seal. It did work for about 18 months. Since the compressor was leaking I went ahead and replaced that along with the rest of the system components except for the evaporator. It is working great right now and hopefully it will perform well for me for a number of years. It was not a difficult repair, you just need to pay attention to details and do it by the book.C4ME said:Did you replace all the equip because of advice or was there mechnical issues. I have seem posts that folks just replaced the drier and pumped in new R134a.