While selling an air-conditioner, better you make sure in the beginning of the discussions, that:
(1) Your customer is looking for a split or a window air-conditioner.
(2) Your customer knows that an inverter type air-conditioner will not work when there is no AC supply (will not work during power cut).
(3) A Slimline (tower) type air-conditioner is not a stand-alone type unit but is just like any other split and you have to run tubes connecting the indoor and outdoor units!!
Happy selling for hot summer just ahead of us!!!