Joel is always friendly and hardworking. In fact I didn't realize he couldn't find the light switch. He never said anything. Worked with just his head lamp till I went down to show him what I was talking about on the furnace. I felt so bad. But he showed me something on the humidifier I never knew was really bad. He was told to fix it. He is the only one I want working on our furnace. He cleaned up after himself.