I just changed my air filter on my AC unit and all of a sudden its not cooling anymore. It was cooling fine b4 I changed it and now it wont go any coolder than 74. Any ideas what could be wrong here? The unit is only 5 yrs old.
Unless you switch off something or had a loose wire or something like that in the process of changing the filter the unit won't stop cooling just because you changed the filter. Check the area that you work on and see if you mess up something in the process first. Hope this helps.