We just replaced our coil (American Standard 3 ton, model number: 2TXCB036AC3HCAA) because it leaks freon. A month later, the compressor won't start and the technician said we need a new condensor(he did tried the hard start). They quoted a Rheem (3 ton 13 sheer) for us. He also said it's high efficient.
Since we can't replace the new coil, my question is, if the coil is not energy efficient (which I'm not sure), with this energy efficient condensor, do we still reach the purpose of "efficient AC"?
What kind of match of the inside and outside units we should look for?
Also, is the AC efficiency related to furnace efficiency?
Another question, is "American Standard" a Trane?
Thank you very much for any help!