The air unit on my house im renting has me in questions. Last summer it constantly ran and took till almost midnight to reach 74 at times. Today was 80 degrees outside. It was about 4 p.m. when i decided to turn on the air, setting it at 73. It took 4 hours to go down 1 degree. I know this is not normal. I have tried telling my landlord last summer how it takes forever to cool. He had a couple guys come out and only replaced thermostat. Im thinking they telling him the unit is all ok. How do u get thru to him something is wrong with it?