Chicago Suburb Air Conditioning Information

An air conditioner is a system or a machine that treats air in a defined, usually enclosed area via a refrigeration cycle in which warm air is removed and replaced with cooler and more humid air.

In construction, a complete system of heating, ventilation, and air conditioning is referred to as HVAC.

A/C in Homes

Whether in homes, offices or vehicles, its purpose is to provide comfort by altering the properties of the air, usually by cooling the air inside.

The main function of air conditioner is to change adverse temperature.



In the refrigeration cycle, a pump transfers heat from a lower temperature source into a higher temperature heat sink.

Heat will naturally flow in the opposite direction. This is the most common type of air conditioning.

A refrigerated air conditioning system works in much the same way pumping heat out of the room in which it stands.

Gas Law

This cycle takes advantage of the universal gas law PV = nRT, where P is pressure, V is volume, R is the universal gas constant, T is temperature, and n is the number of molecules of gas (1 mole = 6.022×1023 molecules).


An air conditioner cools your home with a cold indoor coil called the evaporator. The condenser, a hot outdoor coil, releases the collected heat outside.


The evaporator and condenser coils are serpentine tubing surrounded by aluminum fins. This tubing is usually made of copper.


A pump, called the compressor, moves a heat transfer fluid (or refrigerant) between the evaporator and the condenser.

The pump forces the refrigerant through the circuit of tubing and fins in the coils.

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The two most common types of air conditioners are room air conditioners and central air conditioners.

A compromise between the two types of systems is provided by ductless, mini-split air conditioners.


Residential and commercial space-cooling demands are increasing steadily throughout the world as what once was considered a luxury is now seemingly a necessity.

Air-conditioning manufacturers have played a big part in making units more affordable by increasing their efficiency and improving components and technology.

The competitiveness of the industry has increased with demand, and there are many companies providing air conditioning units and systems.

How They Look

Two air conditioners may look entirely dissimilar in both size, shape, and configuration, yet both function in basically the same way.

This is due to the wide variety of applications and energy sources available. Most air conditioners derive their power from an electrically-driven motor and pump combination to circulate the refrigerant fluid.

Some natural gas-driven chillers couple the pump with a gas engine in order to give off significantly more torque.

Installing a Pump

The pump is also purchased complete I h from an outside supplier. Designed to increase system pressure and circulate the working fluid, the pump is connected with fittings to the system and anchored in place by support brackets and a base.

It is bolted together with the other structural members of the air conditioner and covered by the wrapper or sheet metal encasement.

The encasement is either riveted or bolted together to provide adequate protection for the inner components.