At the end of the cooling cycle my outdoor unit has a bang like a large heavy lid slamming shut. It is a lennox value series. Just had the motor replaced. Capacitor checks out fine. What could be the reason for this weird sound?
Was it the outdoor fan motor? If so the blade may have got bent and hitting the cowling or something else is wrong. Hard to hear it from here. May want to get the tech out again to find out the problem. Stand out there and get a family member to shut it off while you look at it.
"Cut it twice and it is still too short".