The sound wasn't the Heating plus Air Conditioning after all

My fiance and I noticed some weird sounds in the bedroom and they appeared to be coming from the air duct above the bed! I tried to go into the attic to find the source of the sound, and when the Heating plus Air Conditioning equipment was running, it was tough to determine where the sound was coming from.

Since I was pretty sure that the sound was coming from the air duct, I decided to contact the local maintenance service; They came to help us on Saturday, when my fiance and I were both lake house at the time. The repairman performed a complete service tune up on the heating and and he also looked for the location of the weird sound. The repairman was in the attic for a while, and he had the turned off while he was in the attic, and maybe that was the reason why I could not locate the sound, because I did not turn off the Heating plus Air Conditioning system during the attic. I thought the noise was coming from the system, so I left it on. The repairman told my fiance and I that the sound was not coming from the system and appeared to be a piece of metal connected to 1 of the air duct connections. The repairman secured the piece of metal with a screw and encouraged us to keep listening for the sound. He believed it was not going to come back, but told us to listen carefully. The repairman found the source of the noise and he performed a tune up while he was at the house.

multi split air conditioning