One of the most important factors to consider before buying a room air conditioner is sizing. The room to be cooled must be measured to determine the cooling capacity of the unit. This is crucial because if the air conditioners cooling capacity is bigger than it needs to be it will be far less effective, as it will switch on and off continuously leaving the room cold and clammy.
                  
If you are considering a window air conditioner measure the window to be sure that the unit you purchase is going to fit. A central air conditioner is designed to cool an entire house, office building or other commercial building.
                  
These systems usually depend on ductwork to circulate the air throughout the building but ductless central air conditioners are also available. Central air conditioner installation is not a job to be taken lightly; it requires the help of a qualified engineer where Fifth Ave Plumbing and Heating contractors does it carefully.