I had my inside 120 volt blower motor changed awhile back and a bigger motor than the original was installed because it was the only one I could get at that time. The blower runs to fast. I would like to change it out with a smaller HP 4 speed 120 volt motor. I need to know how to properly wire it. Could something be put on the present motor to slow it down?
Also there has been a browish colored material coming out the ceiling outlets. Could the coils be dirty? I took off a couple of the ceiling vents and the pipes are clean inside.