Juan Arcineda arrived early, was friendly, and did a great job. When I wanted the filter replaced on my humidifier and he didn't have one, he called another truck and they brought one for me. In addition, Juan informed me the surge protector on my outside air conditioning unit was not working and would be replaced for free. My particular surge protector was under recall and Juan told me Great Lakes would call me as soon as one came in. Juan is a great addition to your team!