I was so shocked by the lighting the solatube offered. I sometimes forget and think there is a light on in the middle of the day. The technician was great. The work was quiet and he cleaned up after his work. I am very pleased with the work and the solar attic fans. I look forward to summer when I know I will tell the difference in my attic, home and AC bill. I will put more solatubes in at a later date for sure!