I just replaced a new 13 seer 3tons condensing unit today to an existing evap coil and I got some weird data.
pressure was off. low side was at 62 n high side was 250 during the 90deg out side temp. I heard other said that if u match 13seer condensor to a 10 seer evap, u get about an 8seer cooling capacity. wat are ur experience with the pre-installed mis-matched system?