We Recommend and
Products & Systems
The basic types of air conditioners are room air conditioners, split-system central air conditioners, and
packaged central air conditioners.
Room Air Conditioners
Room air conditioners cool rooms rather than the entire home. If they provide cooling only where they're
needed, room air conditioners are less expensive to operate than central units, even though their
efficiency is generally lower than that of central air conditioners.
Smaller room air conditioners (i.e., those drawing less than 7.5 amps of electricity) can be plugged into
any 15- or 20-amp, 115-volt household circuit that is not shared with any other major appliances. Larger
room air conditioners (i.e., those drawing more than 7.5 amps) need their own dedicated 115-volt circuit.
The largest models require a dedicated 230-volt circuit.
Central Air Conditioners
Central air conditioners circulate cool air through a system of supply and return ducts. Supply ducts and
registers (i.e., openings in the walls, floors, or ceilings covered by grills) carry cooled air from the air
conditioner to the home. This 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, an outdoor metal cabinet contains the condenser and
compressor, and an indoor cabinet contains the evaporator. In many split-system air conditioners, this
indoor cabinet also contains a furnace or the indoor part of a heat pump. The air conditioner's evaporator
coil is installed in the cabinet or main supply duct of this furnace or heat pump. If your home already has
a furnace but no air conditioner, a split-system is the most economical central air conditioner to install.
In a packaged central air conditioner, the evaporator, condenser, and compressor are all located in one
cabinet, which usually is placed on a roof or on a concrete slab next to the house's foundation. This type
of air conditioner also is used in small commercial buildings. Air supply and return ducts come from
indoors through the home's exterior wall or roof to connect with the packaged air conditioner, which is
usually located outdoors. Packaged air conditioners often include electric heating coils or a natural gas
furnace. This combination of air conditioner and central heater eliminates the need for a separate
An evaporative cooler (also called a "swamp cooler") is a completely different type of air conditioner that
works well in hot, dry climates.
These units cool outdoor air by evaporation and blow it inside the building, causing a cooling effect much
like the process when evaporating perspiration cools your body on a hot (but not overly humid) day.
When operating an evaporative cooler, windows are opened part way to allow warm indoor air to escape
as it is replaced by cooled air.
Evaporative coolers cost about one-half as much to install as central air conditioners and use about one-
quarter as much energy. However, they require more frequent maintenance than refrigerated air
conditioners and they're suitable only for areas with low humidity.
Air Quality Solutions By Carrier®:
Carrier® Heat Pumps:
- Air Cleaners
- UV Lamp
- Infinity Series
- Performance Series
- Comfort Series
- Base Models
- Geothermal Heat Pumps
Carrier® Fan Coils & Evaporator Coils:
- Gas Furnaces (Infinity Series, Performance Series, Comfort Series & Base Models)
- Oil Furnaces (Performance Series & Comfort Series)
Carrier® Package Units:
- Fan Coils (Infinity Series, Performance Series, Comfort Series & Base Models)
- Evaporator Coils (Performance Series)
- Hybrid Heat (Infinity Series & Performance Series)
- Gas Furnace & Air Conditioners (Infinity Series, Performance Series, Comfort Series & Base
- Packaged Heat Pumps (Infinity Series, Performance Series, Comfort Series & Manufactured)
- Packaged Air Conditioners (Infinity Series, Performance Series, Comfort Series &
We are currently offering
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Heating & Cooling
|Types of Air Conditioners