Well, the written quotes are in...............
1) Variable Speed....Carrier Infinity, 5 Ton: $14,400 plus new zoning (current zoning
not compatible) $4,500. Total, call it $20,000.
2) 2-Stage Carrier Performance 4 Ton: $12,900. Current zoning IS compatible.
For $7,000 up-grade cost............not worth it.
Not pulling the trigger, waiting until it dies. Can reply on the 2 Ton for some comfort until the new unit is installed.
THANKS FOR ALL THE INFO