Troy C is an excellent technician. He's very professional, knowledgeable and efficient, and clear with his explanations. Also mindful of COVID regulations. He was very thorough when checking my son's furnace and AC. Told me what was wrong, what caused the problem, and fixed the problem. The first time he came out, he did lots of diagnostic tests and a dye procedure. I then asked for him to come back a second time as a follow-up to that procedure. He even waited a few minutes, on a Friday, for my son to get home to explain everything to him in person. Thank you, Troy.