Combination air conditioner?

I am looking at buying an older house. The air conditioner is called a combination, or so I am told. What this means is there is no air handler in the house and the entire unit is outside. I am trying to research this method since I know nothing about the negatives or benefits. I know that it is only a 12 Seer and in Florida the new low is 13 Seer.


Can anyone give me information on this air conditioner or tell me where I can research the benfits?

Combination air conditioner?
I just found out the difference from the repair guy. A heat pump typically sits outside the house and is connected to the blower or fan unit inside the house. In summer it removes heat from the house and vents it to the outside. A liquid refrigerant is pumped through an evaporator coil of tubing. The liquid expands as it moves through the coil, changing to its gaseous state as it absorbs heat from the air surrounding the coil.





A blower then pushes air around the cooled coil through ducts and into the house. The gas, now carrying considerable heat, moves through a compressor and begins the liquefying process. It then moves to a condensor coil outside the house, where the compressed gas releases its heat and returns to a liquid state.





During the winter, the heat pump reverses this process.





A COMBINATION UNIT usually sits on the roof and has both the heat pump, condenser and fan all in one unit instead of two.