2004 Honda Accord Water Pump

I had my water pump, actually now that I think of it, it may have been the power steering pump, replaced just about 3 mos ago, and when the A/C is running (during idle), it makes a constant "whirring" noise, sometimes with a little bit of a pitch to it. If I turn off the A/C it will go away kind of, but when the A/C kicks back on it starts again faintly. The A/C pump or unit was also replaced around the same time. It hasn't started the real high pitched thing yet, but I was wondering what your recommendations are for what is wrong.