Workers always showed on time but the but the person in charge that I was dealing with was usually late. They did not blow in anywhere near the amount of insulation that they showed in all of the attic pictures in their slide show. When I questioned that, I was told I didn't need it. I have not seen a difference in my heating bill, which would be fine if I was warmer. I am still ( a year later ) waiting for the promised, energy efficient, light bulbs for my front porch light. If you refer someone you get a monetary reward, but the person I referred for window insulation waited months to be called. I kept reminding them and they said they were very busy. By the time they got to her, and I told her about my experience, she didn't trust them to even get an estimate.