Loss of Power when A/C is running

The A/C uses a fair amount of engine horsepower and it's normal to notice that when the compressor engages. If you notice that the performance or noise level has changed, there could be something wrong and it's worth checking it out. Find a Ford specialist to give you an opinion. Here's a directory link for you: http://repairpal.com/ford-repair-in-glendora-california