Air conditioning units are major home appliances designed to control the temperature and humidity in your home. There are many Air Conditioner alternatives designed to meet your specific need. It is very important to know what type of AC you need to meet your need.

1. Common Air Conditioning
Units

2. Common Air Conditioning
Units
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Air conditioning units were considered luxury items in the
olden days. But they became common in 1950s. They are
vital in our homes and you cannot live without them these
days.
They are environmental friendly and efficient.
They give a comfortable environment at home throughout
spring, summer, autumn and winter seasons
They have two major functions – heating and cooling
They also purify air and benefit people with allergies and
respiratory problems
They improve security in your home because doors and
windows can be kept closed hence protection from nuisance
insects, dust, pollens and any other external pollution

3. Common AC units include 3
important parts
The compressor
 The evaporator
 The condenser
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4. The compressor
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A compressor is a pump located outside that
pressurizes the refrigerant in the air
conditioning unit.

5. The evaporator
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The evaporator is a component that
blows air in the room. This is the
component that heats the house.

6. The condenser
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The condenser is a component that
lets the heat from the house go away
by the use of metal fins.

7. The Common Air
Conditioning Units
Window
AC units
Split AC units
Ductless AC units
Roof Top AC units
Portable AC units
Central AC units
Packaged AC units
Tower AC units

8. Window Air Conditioning
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Window air conditioners are mounted on the walls with their
compressors extending outwards and front extending into the room.
They are cheap, most commonly used, reliable and simple to install
to keep a room cool while avoiding the costly construction.
They are found in various sizes, capacities and different budget
according to all budgets.

9. Split AC Units
Split AC units are ducted units comprising of outdoor unit and indoor
unit. The outdoor unit houses the compressor, condenser and the
expansion valve. The indoor unit comprises the evaporator,
expansion valves and the cooling fan. They are commonly used in
commercial buildings and are capable of cooling entire building with
many rooms. They are designed with aesthetic look to add beauty in
the room and You don’t have to make a hole on the wall to install
them.

10. Ductless AC Units
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Ductless AC Units are the most convenient air conditioners.
They run silently and efficiently that you won’t even know that
they are running and their outdoor unit can be placed
anywhere.
They require low maintenance and they have minimal noise
and are good for small spaces.
You can purchase many of them and install them in every room
of your house without using too much space.

11. Roof Top AC Units
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The roof top air conditioners are mounted on the roofs of
buildings or ceilings.
They are constructed to ensure quiet operation and are
packaged into a single stylish and aesthetic units to fit any type
of décor and present the most innovative technology in the
market.
They are best for large areas where windows or split AC may
not reach out.

12. Portable AC Units
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Portable air conditioners
are very common for
constant travelers
because they can easily
be mounted on walls
and removed for
transportation.
They are good options
to use when you are
prohibited from installing
window AC unit for a
variety of reasons.

13. Central Air Conditioning
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Central air conditioners cools the entire house by circulating
cool air through installed ducts.
They are suitable in large buildings such as commercial
buildings, hotels and shopping malls.
They are quiet, efficient and convenient to operate.
They do not take any space in your home and they do not
require any repairs.

14. Packaged Air Conditioners
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Packaged air conditioners are one of the best and
commonly used air conditioners.
They are very quiet and efficient.
They are available in fixed rate capacities such as
3,5,7,10,15 and 20 tons.
They are suitable for large areas where cooling capacities
of 4 to 20 tons are needed.
The components are placed in a single casing that looks
like a box mounted on walls and rooftops with control
panels, compressors and condensers.

15. Tower Air Conditioners
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Also known as floor-standing air
conditioners.
They consists outdoor unit and indoor Like
split air conditioners.
They do not require wall installation.
They occupy floor space
Are suitable for very large rooms where high
cooling capacity is required

16. Common Air conditioning
sizing
It depends on the size of your home
and the number of windows it has.
 The number of people in your home.
 It depends on the amount of heat
generated by appliances in your
home.
 The direction or shade of your
windows and walls.
 It depends on how much the air leaks
into your home from the outside.
 The insulation of the ceiling and walls.
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17. Rating
Air conditioners are commonly rated by the
number of British Thermal Units (Btu) of heat
they are able to remove per hour. For instant
a room air conditioner range from 5,500 btu
per hour to 14,000 btu per hour.
 They are also rated by the use of ‘ton’ which
is 12,000 short tons per hour. One
refrigeration ton is equal to 12000 BTUs per
hour(1 ton = 12000 BTU/hr).
 Today’s common air conditioning units have
higher energy rating that old AC units. You
may save more energy cost if you replace
your 10 years old AC unit with a new one.
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18. Common AC unit energy reducing
method
Service your AC unit regularly and
minimize refrigerant leakage.
 Locate it on a wall or window on the
shadiest part of the house or at the
central part of your house.
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