Just purchase a york h4ts036 condenser, 16 seer need help for a matching coil there is not a lot of people in my area that are experiecened in 16 seer units as I ilve in Illinois they say its over kill. York teck support keeps sending me to local dealers who only want to pick my pocket. I have a single speed furnace that I realize will hurt my seer rating, but have purchashed a spdt fan relay to make it a two speed blower. Must have a txv unit for the unit to operate properly and my goodman furnace plenum is 21" deep and 21" wide please help if you can