Mohsen and his crew were courtesy and efficient. During the cost estimate appointment, they patiently walked me through steps of wiring & installation, where the lights and switches go, etc. They were able to install over 30 potlights within a couple of hours. My only disappointment was that they couldn't get the lights to the overhang of the gable roof - it required more time & efforts to do so and I guess the company took the easy way out. One potlight burnt out after a few days, and they never came to replace. Other than that, overall they did a great job.