This time around our problem centers on a split-system air conditioner. The condensing unit is 240-volt, single-phase, and the indoor air handler (which our customer is able to tell us is “blowing ...

Figure 1. Motor wiring configuration. In this month’s troubleshooting situation, our customer has called to say that the roof-mounted gas pack on their 1,500-square-foot home isn’t keeping them cool.

Q: Help! It’s hot in my house, and the AC unit is running, but it isn’t blowing cool air. Why is my AC unit fan not spinning? Do I need to call a professional, or is this something I can fix myself? A ...

When the mercury rises outside, nailing down why your AC is not cooling becomes a top priority. There are eight common reasons why this happens, including dirty filters, and some of which you can fix ...