Why Is Ductless Air Conditioning Installation in Manhattan a Good Choice. Have you just moved to Manhattan? Have you just found a small space to start your new life in the city? If yes, and if you are looking for cooling options, then don't think anything else other than a ductless air conditioning installation. In many other ways, a ductless ac unit is a big scorer over the traditional window units. It is safe, and gives you no hassle of installation. In the long run, it will help you make savings and with timely repairs, will go on serving you for a long time.