Structure:1785 ft home,r-19 walls,r 38 attic,r-19 floor on crawl,all glass accounted for on heatload.
Design :100 outside,72 inside
Unit;3 ton bryant hp 410a 12seer
Duct :hardpipe with 2 in foil in crawl,(new and tight).1 static design
Return:14 in and 10 in,filters sized at .4 times cfm (state code)Arkansas;
Subcooling:12-13,(chart specs 12)
problem:unit runs constantly, loses ground from noon till nine pm.Set at 75,temp is 79,outdoor is 95 to 101.