I recently commissioned a project that involved replacing eighty 2-pipe, dual-temperature fan-coil units in a nearly 40-year-old high-rise condominium. This sounded like a pretty easy assignment. How ...

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 ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. At CNET, we've been looking for high-tech ways to cool off, ...

1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.