re: Brand new AC and vents in living room are leaking badly

quote:

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Ha. That thing never turns off. It is on non-stop from 9 a.m.-9 p.m. Yesterday in two interior rooms it was 66 degrees while the living room room was 78 degrees. All while set for 72.

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This tell me a lot.

First that your unit is undersized for current conditions in your house….i’ll bet anything it will cycle like it is supposed to when you get the house insulated and sealed.

Second, I totally agree with crawdude that the air dampers within your ducts need to be adjusted.

Get your insulation installed and then call the A/C company and tell them exactly what you have told us.

I didn’t read the whole thread, so you may have already installed the insulation.