Today I came to Carlins Okotoks home because the furnace fan is making a noise again. The blower motor was replaced 1 year ago and there were multiple call outs after the fact because the furnace noise. Each time it was the fan coming loose of the blower motor and was tightened. Today I found the same issue. As a courtesy I tightened the set screw on the fan and tested. The system is working well now however should the problem return, it is no longer under warranty and a new fan will be required.