Been reading for hours and hours on this site. Great information, but I still have questions. I'm looking to replace my AC/Oil heat system with up to date equipment. I had two quotes one for the Infinity 24ANA1, and the IQ drive by Frigidaire (no model specified). Both did manual "J" and came to same conclusion - four ton and variable speed furnace fan. I tried to get a third estimate but never got a call back even after a second call. Actually three people never got back. I'm sure they must be very busy.
In addition to the current system being 20 years old, I have high humidity. Previous advice to let system cycle with fan on auto has helped somewhat but still high. Both quoted units look to be a possible answer to my humidity. From what I've read the IQ drive looks the most appealing but I'm still not sure I know all the facts about both units.
Any input about these two units would be appreciated.