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The problem was a bad capacitor, which the technician swiftly discovered and fixed within the hour. I liked the fact that he showed me the broken part and explained how it affected the system performance.

The dismantlement of the A/C system took most of the afternoon, which was expected given the requirement to coordinate with building management beforehand. The technician took care to label all components and ensured nothing disrupted common areas during the process.

Their quote was reasonable compared to others, and the technician dismantled the A/C system in under an hour, carefully labeling parts for reassembly. It was helpful that he explained each step, which is not something I've often experienced with other contractors.