Today I showed up for an evaluation on a 10-year-old gas furnace Carrier Infinity system the outdoor unit was not running and throwing code 71 compressor dropped out I reset the board to assess the situation the system came on and showed to be severely low on refrigerant indicating a leak and at the same time running a high head pressure the coils did not look particularly dirty though it is probably due for a service the homeowner has American Home Shield and is on the fence about how to move forward I offered a coil cleaning and refrigerant however I am unable to guarantee that the system will resume normal operation after doing so I also recommended a permanent solution of full replacement starting with a fresh 10 year warranty however the homeowner said she is looking to sell the house I was going to schedule a comfort advisor to at least provide her with numbers so she can make an informed decision however she is uncertain about her schedule and would like to call the office at he