Basically, air conditioners do not produce cold or hot air on its own. To put it simply, an air conditioning unit draws its operation on the law of conservation of energy which states that energy can neither be created nor destroyed. Instead, it can only be transformed from one form to another. It also means that the energy lost in object A should be equal to the energy gained in object B.
An air conditioner typically draws the hot air out of the room in order to provide cool wind to the room. This means that when a cold wind is felt, a small portion of heat has left the room atmosphere. This heat energy has been transferred into another object or environment. In most cases, the hot air is blown outside the house or building. On the other hand, in order to provide a heating effect, it is important to have a heat source, whether it is through electricity or fuel. The ground can also be a source of heat for other unit types.
Call HVAC Orlando if you have any questions about your water source HVAC system.