Evaporative air conditioning in New York works by pumping hot, dry outside air through cooling pads. As the hot air passes through the cooling pads the water evaporates and the head is absorbed, resulting in a cooling effect which lowers the air temperature. The internal fan then blows the cool air throughout the house. SUNBELT PTAC INC. Air Conditioning Installation recommends this air conditioning system as it works best with the hot and dry climate. It provides a low cost solution for simultaneous cooling of an entire home, especially those with children and pets.