Hello everyone! A little background of my system: I have a 5 ton Amana 16 SEER (Cool Only) Central Air System. Air handler and A-coil are located in attic in a typical Trunk and branch style to a colonial home's 1st and 2nd floors. The square footage of coverage is about 2900 sq ft total. There is one return on the second floor with a filter size of 30x24x5 Merv 8. The AC in my opinion has alot of spunk and has the "bring it on" attitude and does a 20 degree differential quite easily and effortlessly and maintains a constant temp of 69F (unanimous family preference) in low cool mode. What I want to do: Now, I have a finished basement which I wanted to cool which is roughly 500 sq feet. It does get very damp during the summer (North East) so a 60 pint dehumidifier is running on a timer + condensate pump so I don't have to dump water 2 times daily. I have a 12x8 sheet metal laundry chute from 2nd floor to basement which I can easily convert to a supply line for the basement. Considering that I have a damp basement, will it be wise to run a return duct to the basement from the attic Air Handler? Will it over-saturate the A coil due to the humid conditions of the basement? Is it even necessary to add a return in the basement? Can it be feasible with just tapping into that laundry chute and making it a dedicated cold air supply to the basement (without a return) while still running dehumidifier? The dehumidifier does make the basement warm and dry so I think the cold air to the basement would be a good idea. What do you guys think? Any suggestions are welcome. Thanks.

I live in an apartment, and have a window AC unit. My question is, they just installed a new AC unit, and it is cycling on and off, when it is set on high, at 70 deg, and my room temp is 80 deg. The old one did the same thing. The indoor RH is 50%, as is the outside RH. The outside temp is 75. I have the impression that it would run constant, until it reached the set temp of 70 deg. If someone could let me know if it is working as it should, and why it cycles, even when it has not reached the set temp, that would be great. Or let me know if there's potentially another problem, that could be causing this. I live in a retirement complex. This is an extremely small apartment, at a whopping 600 sq ft. I have a combo living room - kitchen, one small bedroom, and a small bath. There are only two windows, and two doors. Thanks for your time.