Upon arrival I began the furnace tune up. First, I did a static pressure test. Your system is rated for .5 maximum and your system is testing at 1.1 which is over double the max allowed by the manufacturer. My Field Supervisor Scott is here to find a solution for this high static pressure. I continued my tune up. I found the exhaust flue pipe was cracked and leaking carbon monoxide. I checked the heat exchanger and found lots of rust and cracks starting to open up which is dangerous. When I find a system that is leaking CO I have to shut the gas off and put a “red tag” on the gas line. You can still use the AC portion of the system just not the heat. If you have any questions or concerns please feel free to call us. Have a great weekend!