I have a bryant 310AAV042090 was installed in 2006. My id motor stopped working today. I called the company that installed the unit. They want to charge me $1000.00 to order this part and install it. Being that it is 21 degrees outside I feel I am being taken advantage of. The part number is mc21ze1222a. I think I could do this myself or order the part and have some help. Is this difficult to do? How much is this part? Thank you