I bought O general Window AC 1.5 Ton in Feb 2017. I am extremely happy with the product. When it was 46 degrees outside I was still enjoying winters inside my house.
They have all standard feature like timer, temp control etc
But as this product consumes high energy I would recommend using timer setting.
You can set the timer for 2-3 hours and enjoy sound sleep. You don’t have run for the whole night.
Temperature control is very good. As soon as it reaches the set temperature machine automatically shut down and restart once the temperature rise by 3-4 degrees.
I would recommend to use it at 27-28 degrees for best response. In non-ideal condition, it doesn’t reach 18 degrees so setting it up to this temperature won’t help you much except making a hole in your pocket.
Feel free to ask if you have any query.