Came out to check a loud noise. Customer said there were screws loose by the blower motor. I tightened the screws and cycled the furnace three times. I didn’t hear any noise that was out of the ordinary. There didn’t appear to be any damage to the motor or furnace. I adjusted the fan speeds to quiet down the motor a little. The screws on the aprilaire filter box were left from install. We usually leave some in case they’re needed later on. Everything is tightened down and unit is heating properly.