I am a highly skilled and experienced home service professional. I recently completed a job replacing a noisy pulley in a residential air conditioning unit. The pulley was worn out and causing the fan to make a loud noise. I carefully removed the old pulley and replaced it with a new one. I tested the new pulley to ensure it was working properly and it was. I also cleaned the area around the pulley and replaced the fan belt to ensure everything was working correctly. The customer was very satisfied with the work and I was happy to have been able to help them with their problem.