Good news! You have quite a few choices when you are trying to make a decision about a new air conditioner and heating system. Here are a number of common types:
Split system - This system means that there are parts of your system both inside and outside. These typically include a furnace, an evaporator coil, air conditioner (which works with the evaporator coil), ducts (you want to carry the air through your house), thermostat, and other optional accessories.
Hybrid Heat split system – This system is a smarter, more energy efficient twist on the type of system above. This system uses an electricity-fueled heat pump to provide heat (along with a furnace, ducts, evaporator coil, thermostat, and other optional accessories). Even better? The heat pump works in place of an air conditioner as well!
Packaged systems – With a packaged system, it is basically an all in one deal. Many of these look very similar, but they can serve a number of different functions.
Ductless split system – Ducts spread air through your house – so this system does this without ducts. Basically, this type of system would be for an area of the house like a room addition or areas that do not have duct work.
Geothermal Heat Pump System – This type of system doesn't rely on the air outside. Instead, it taps into the temperatures of the earth to heat and cool your home.
As you can see, you have lots of options to consider. Find the one that works best for you and your home.