The following lines were added (+) and removed (-):
The residential air conditioner has two units, an in-house Air Handler Unit and an outside Condenser Unit. The two units are connected with two lines. The system is considered to have three primary parts:Central air conditioners circulate cool air through a system of supply and return ducts. The cooled air becomes warmer as it circulates through the home; then it flows back to the central air conditioner through return ducts and registers. A central air conditioner is either a split-system unit or a packaged unit. In a split-system central air conditioner, there is an outdoor condenser and compressor, and an indoor evaporator, also known as the a-coil. The a-coil is typically installed in the same unit as the heater, but at the end where it is the last part air flows though before going into ductwork. If your home already has a furnace but no air conditioner, a split-system is the most economical central air conditioner to install. '''Split System Central Air'''<BR>Alternatively, a packaged unit has the evaporator, condenser, and compressor all located in one box, which usually is placed on a roof or on a concrete slab next to the house's foundation. They will not be discussed much here.* Small Line = Liquid Line (also called the pressure line), which feels hot to the touch while unit is operating in AC. Carries liquid coolant between the two units, this line gets very hot when operating due to the coolant being put under pressure. This line should not be insulated.* Small Line = Liquid Line (also called the pressure line or pushing line), which feels hot to the touch while unit is operating in AC. Carries liquid coolant between the two units, this line gets very hot when operating due to the coolant being put under pressure. This line should not be insulated.