can i replace new central air conditionning for my house under my roof patio cover about 54 inches?

Answer 1

You technically may be able to with your building codes but you probably shouldn't. In the summer, the unit would run hotter. This would cause higher pressures and more electricity used. In short, it will cost you in the long run. For more info, check out the air conditioner page at my source.

Answer 2

depends on what your building code will permit in your
city/county/parish

all the best