Our furnace fan blower motor is not working(quit). It doesn't run. It had a flat spot and my husband was able to get it going, but now it won't run at all. My question is will it be cheaper to fix it or to buy a new one and where can I find one? My husband is an electrician and probably can install without too much trouble if we can find one. We're thinking an electrical supply co. might have one? Thanks.