the heating guy from airtech came today. seemed to be in a rush. one thing that he noticed was that the thermostat was wired wrong so that the air conditioning was coming on along with the heat, so they were working against each other, not heating very efficiently. he said that the furnace would also need a thorough cleaning and that he would talk with the land lord to schedule that. I mentioned the duct problems to the heating guy and he said that they could check that out and give an estimate when they came to clean the furnace.