We had excellent service from Isidro with Chas Roberts. Our air conditioner went out on the hottest day (of course) and we initially had another company come out and were told needed a replacement of our controller. We ended up having to stay in a hotel and the next day called Chas Roberts on referral from our neighbor. Isidro came out and within three hours we were up and running and it wasn't the controller but the motherboard on the air handler. Had we kept with the other company, the air wouldn't have been fixed plus wasted valuable time and money. Thank you Isidro and Chas Roberts!!!