"Robert11" wrote in message
...
Hi,

Thanks for all the good advice.

Let me show my ignorance: "Personally when I change units again I will
make
damn sure that I get a
scroll compressor."

What's a scroll compressor ?

Read this: http://www.copeland-corp.com/cp_ac/cp_ac_0_1_a.htm


Why is it better ?

The things are almost bullet-proof. The have less moving parts, can take
liquid slugs (of refrigerant) a lot better than the older recips could, and
are quieter.

More expensive ?

I don't think so.

Found on what mfg's units, etc. ?

All of the Rheem line, higher SEER Trane and York to name a few.