I really like the technician come for my furnace t...

I really like the technician come for my furnace tune up. He did great job as well as taught me how to clean HRV. Since we move the house we don't know we have to clean it every 4 months. He also go over with me how to use the thomerstat, dehumidistat properly. He answered all my questions and concerns and make sure I understood. I appreciate his work.