And if your so concerned about it. Why don’t you go Brother Kobe Bryant And Michael Jordan Friend signature shirt and help out your daughter? Instead of bitching about her partner. Since you don’t know the full story. My daughter has a toddler and a newborn. She’s getting exhausted and can’t get daddy to help at all. He won’t get up at night or help her. How can she get him to help her without arguing?(Original Question Asked). You are probably talking about a good 8 hour job. You have to remove the old unit. Replace it with a new, or rebuilt A/C unit tighten down, all of the hoses, that need to be connected. Then, before you can add the R-134A FREON, the ENTIRE SYSTEM HAS TO BE EVACUATED. Before adding A/C refrigerant to the unit.