I had only been on the HVAC job for a couple of weeks when my boss Ed told me he needed me to go to an elderly gentleman’s condo as well as change the old air filter. I had no concerns with increasing the air filter, but it seemed odd. When I got there, the old timer showed me where the air filter was kept. I thanked him as well as stood there, waiting for him to leave. He waved toward the old oil furnace as well as told me to get work. I could not believe he was going to sit and watch me change the air filter; Once I got the air filter changed, I was hearing some pretty unusual noises coming from the oil furnace as well as checking it. I found a lot of dust and dirt around the components as well as hastily dispatched it. Once the dust was gone, I cleaned the entire oil furnace as well as checked the rest of the ductwork. I wanted to make sure there were no clogs in the ductwork that would disrupt the airflow as well as possibly doing mangle to the major components of the old furnace. The entire time I was doing the inspection, the homeowner sat on the cement steps as well as watched every move I made. When I completed the job, he asked me if I thought I forgot anything? I shrugged as well as said I was pretty particular I hadn’t, but if there was something additional he wanted me to do, I would gladly do it. When I returned to the Heating, Ventilation, as well as A/C dealer, Ed asked how things went. I told him how I thought I thought it was different the way the old man watched me as well as Ed laughed. He said the old man was his dad. He was also his professor when Ed first became an Heating, Ventilation, as well as A/C worker, as well as I passed the test.