Amazing! He came to my house and installed a generator that we really needed for peace of mind. My brother is in a wheelchair and the only way he can get in/out of the house is by using the ramp in the garage. So if the power is out he could not open the garage door. Dan came in and made our house safer for my brother and added peace of mind for us all. Very nice guy, I had no problem trusting him alone in my house for a couple hours while I went and got some errands done. Excellent service, A+.