These guys are hardworking people. They went door to door in my neighborhood explaining about the Take a Load Off Texas Program and how they can assist homeowners to make their house more energy efficient. In my case, I barely had any insulation in my attic, they provided me with a fair quote that it was impossible to pass. It took about 3 hours I believe, but it all depends on the extent of your project, they were friendly and professionals. I can tell the temperature difference in my house already and now I look forward to seeing the savings in my electricity bills. If your service provider is Oncor you should definitely give them a call and see if you qualify for the program for huge costs savings. I am a happy customer!