Ok
Well, if it is Loud and it is also Cold, an easy/cost effective solution is Ear-Muffs....no more noise and not so cold anymore....
Enough of that !!!
The blower motor bearings may need some attention. The blower motor is down under the W/W wiper assemblt, under the hood...you may get away with some lubricastion, but you may also need a new blower motor..don't wait too long b/c a dragging blower will certainly burn up the Regulator.