Most new homes in the United States are built with central airconditioning systems installed during their construction. Whilemany older homes do not have these systems, it is not difficult toinstall a central air conditioning system. The first step ininstalling a system is deciding which system is appropriate for thebuyer’s needs. Central air conditioning systems typically consistof an outside unit which includes the condenser and compressor, aninside unit which contains the evaporator, and the ducts and pipesin the home that distribute the cold air to the different rooms inthe building. Choosing which system is appropriate depends on thesize of the area being cooled, the amount of power available topower the system, and the homeowner’s budget. Once the system hasbeen chosen, the first ste