Eli and his helper showed up at the house on the time they were scheduled. They introduced themselves to me. They put their bootie covers over their shoes so they wouldn’t track anything in the house on the floor.They were here to check out the vents and the furnace out to make sure it was running right and was cleaned. When they were done they went over everything that they did and finding. Everything was okay and cleaned and running right. I gave them a filter and Eli changed it for me.