Is an added vent needed?
We had an a/c unit installed last year as the existing one was far too small for the home. As this was done at the end of the summer we really did not have much time to see how it would perform during the peak Florida summer. We have this year and have an issue. Unfortunately company, one man, who installed it passed away and we are now left with the prospect of "advice" from all areas. The following is my question
We have the return in the ceiling in the hallway outside our bedrooms. The thermostat sits almost directly underneath it. There is no vent in the hallway. We have noticed that the thermostat will show 77 degrees and we have the a/c set on 75. We have had the t-stat replaced and had an insulation inspection, both are sufficient. It just does not cool down until sun goes down. Which means we either have to set air at 77 to avoid undo condensation on ducts or let unit run nonstop.
My question is, should we add a vent in the hallway to help the t-stat get a more accurate reading of the house? If so how far should it be from the return? House is only 1400 sq. feet and hallway is about 10-12' long.
Any help would be great as we are being hit with alternating opinions from every where. Thanks you in advance