I wonder why nobody every thinks a unit needs to breathe. Ho called me to check it out as soon as I went out the back door I could hear the compressor straining and the fan suffocation for air flow. Felt like 150+ degree air coming out of the unit. Dryer vent right over the unit WTF. He also wanted me to check the heat exchanger had a nice large crack in it. I disabled it. told the ho not to use it. sorry i could not get a pic of heat exc.