They completed the installation in one day with 3 people. The old windows were harder to remove than they expected, but no real issues. They did a walk-through with me at the end to be sure everything was satisfactory, but both of us forgot to check the laundry room where that window did not get calked on the inside. I had to call them back out and they took care of it within 2 days. They cleaned up everything, were very polite and professional. The hardest part for us was removing all the blinds, brackets, and window treatments before the install, however 2 of their guys helped us with that.