Adam was very friendly and helpful! He called when he was About 30 minutes away. He arrived when expected. He was very thorough checking our system. He even took extra time to check original (23... Adam was very friendly and helpful! He called when he was About 30 minutes away. He arrived when expected. He was very thorough checking our system. He even took extra time to check original (23 year old builder installed) smoke detectors so we now know which ones need to be replaced. I am so impressed with him and the company that he represents!