I am a homeowner with a complete Rheem system, 3 ton condensor, 3 ton coil and 75k gas furnace. This was a complete changeout and the old system was the same size. My house is 1,400 sq. ft.
The first thing I noticed was my indoor humidity was higher with the new system. The old one kept it in the 40's% while the new one does 50's and 60's%. I thought at first it might be because the new one didn't run as much but then I discovered it doesn't seem to make a lot of difference how much it runs. I read here that lower fan speed could help so I started turning it down. I have now finally arrived at 50% humidity (at night) by turning it all the way down to 293cfm per ton! If I put it any higher it lets it slip up too high. Is this unusual?