Mobile Home Equipment

Understanding Split System Air Conditioners
The split-system air conditioner works with your furnace to distribute the cool air. It's referred to as a split-system because the condenser unit sits outside of the home, and the a-coil sits inside the home in the furnace. When running, the compressor, located inside the condenser, pumps freon to and from the home. This, along with the aid of the a-coil, removes heat from the home. During the process the a-coil becomes very cold. The furnace's blower then distributes the coolness from the a-coil throughout the home.
When choosing an air conditioner, choosing one that's the same brand as your furnace may help simplify the installation process. Then you'll need to know how big of an a/c to get. The size of an a/c is measured in 'tons.'
Talk to your technician about which size is best for your home. 2-4 tons is the range for most homes. If you get too small of an a/c, it'll run all the time. If you get too large of an a/c, it may not run long enough; therefore, leaving excess humidity in the home.
If you want an a/c that runs efficiently, then you need one with the most 'seers'. Today most air conditioners are 13 seer. Like anything, the more efficient the air conditioner, the more it will cost to buy.
Alternate Air Conditioning Options
If you don't have a furnace but have ductwork in your home, then an air handler may be an option worth looking at. Basically, an air handler is a furnace with no heater. An air handler is a box that contains a blower and an a-coil. The condenser still sits outside. Then to really confuse the issue, if you have an air handler and want heat, many companies now make kits which will add heat to an air handler.
Self Contained A/C Unit
Another popular option is a self-contained air conditioner. With this option, the whole air conditioner sits outside next to the home. Flexible insulated ductwork runs from the unit to your home. One of the air ducts will bring cool air into the home, the other will be a return air duct. Some of these units also contain heat. Most of these systems require 220V of power, so be sure your service panel can handle that.
Finally, you could choose a heat pump. Heat pumps can both cool and heat your home. They do add some efficiency in they way they gather and disperse heat from the surrounding air.