I just wanted to express my gratitude since Sam was able to fix all the problems that have been occurring in my unit. I liked his work for it has the best quality and it was functioning back to normal. I had no problems using it at home. He's an expert technician and he's skillful enough to perform the task, therefore he made a qualifying result of the repair. It was such an unforgettable service! He's the best technician for hvac heating repair.