Vadim is friendly, informative, and skilled. During the process of repair, he let me observed his work and he also explained to me the process at the same time. I was very happy that the problems were all fixed excellently within an hour. He even gave me tips to do appliance maintenance to avoid future problems. It was due to his expertise, our unit worked perfectly again. He even encouraged me to return when something else needs repairs. This is the best company for heating and cooling repair service needs.